網(wǎng)絡(luò)運維與管理2013超值精華本

內(nèi)容概要

《網(wǎng)絡(luò)運維與管理》是面向網(wǎng)絡(luò)技術(shù)管理人員的實用性期刊。本書是2012 年《網(wǎng)絡(luò)運維與管理》各期內(nèi)容的匯集，按照欄目分類進(jìn)行匯總，內(nèi)容詳盡實用，保留價值高。全書分為安全管理、故障診斷、系統(tǒng)運維、網(wǎng)絡(luò)管理和終端管理板塊，共精選數(shù)百篇實用、精彩的技術(shù)文章，是廣大網(wǎng)管員不可多得的業(yè)務(wù)指導(dǎo)書。
本書讀者對象以網(wǎng)絡(luò)管理技術(shù)人員（網(wǎng)管員）為主，包括網(wǎng)絡(luò)管理主管、網(wǎng)絡(luò)愛好者、準(zhǔn)網(wǎng)管和所有關(guān)注網(wǎng)絡(luò)應(yīng)用與網(wǎng)絡(luò)事業(yè)發(fā)展的人士。

書籍目錄

第1 章 安全管理
為虛擬機打補丁...................................................................2
補丁安裝更新的方式及工具 .......................................2
下載安全補丁 ...............................................................2
啟動SSH 遠(yuǎn)程連接服務(wù) ..............................................3
ESXi 主機進(jìn)入維護模式 .............................................3
使用命令行方式打補丁 ...............................................3
后續(xù)操作 .......................................................................4
多管齊下的反黑紀(jì)實...........................................................4
配置方案 .......................................................................4
怪異現(xiàn)象 .......................................................................4
處理措施 .......................................................................5
清除中毒后遺癥...................................................................5
百度打不開 ...................................................................6
U 盤不能進(jìn)行寫操作 ...................................................6
管好密碼...............................................................................7
快速刪除網(wǎng)絡(luò)訪問密碼 ...............................................7
禁止網(wǎng)絡(luò)自動記憶密碼 ...............................................7
巧妙更換網(wǎng)絡(luò)登錄密碼 ...............................................8
使用U 盤輕松重設(shè)密碼 ..............................................8
強制使用高級安全加密 ...............................................8
拒絕登錄使用空白密碼 ...............................................9
實現(xiàn)實名制上網(wǎng)...................................................................9
技術(shù)方案 .......................................................................9
管理方案 .....................................................................10
存在問題 .....................................................................10
加固Serv-U 保護FTP .......................................................10
完善日志記錄 .............................................................11
加固密碼和限制登錄 .................................................11
防治探測弱口令攻擊 .................................................11
減小系統(tǒng)開銷，屏蔽頻繁的匿名登錄 .....................12
FTP 域離線自動發(fā)短信到網(wǎng)管手機 .........................12
管控進(jìn)程，讓系統(tǒng)無憂.....................................................13
批量刪除頑固進(jìn)程 .....................................................13
提供純凈進(jìn)程環(huán)境 .....................................................13
生成頑固進(jìn)程拒絕名單 .............................................14
智能調(diào)整進(jìn)程優(yōu)先級 .................................................14
判斷進(jìn)程危險等級 .....................................................15
拒絕隱藏賬號.....................................................................15
動態(tài)監(jiān)控創(chuàng)建痕跡 .....................................................15
強制顯示登錄痕跡 .....................................................16
巧妙刪除隱藏賬號 .....................................................16
文件遭竊抓“真兇”...........................................................17
發(fā)現(xiàn)疑似信息泄露事件 .............................................17
揪出作案者的尾巴 .....................................................17
總結(jié) .............................................................................19
巧用防火墻保護公網(wǎng)服務(wù)器.............................................19
服務(wù)器無法登錄 .........................................................19
初步解決問題 .............................................................19
問題再次出現(xiàn) .............................................................20
徹底解決問題 .............................................................20
替換法找回MySQL 密碼 .................................................21
MySQL 的加密機制 ...................................................21
MySQL 的存儲方式 ...................................................22
替換法破解MySQL 密碼 ..........................................22
不讓病毒通過磁盤傳播.....................................................23
封鎖隱藏共享后門 .....................................................23
封鎖存儲寫入通道 .....................................................23
封鎖自動播放后門 .....................................................24
封鎖分區(qū)訪問通道 .....................................................24
封鎖病毒運行后門 .....................................................24
安全使用帶毒軟件.............................................................24
一、環(huán)境準(zhǔn)備 .............................................................25
二、軟件安裝程序帶毒 .............................................26
三、軟件主程序帶毒 .................................................26
四、直接使用的軟件帶有病毒 .................................27
謹(jǐn)防共享文件泄露信息.....................................................27
通過net share 命令定位 .............................................27
通過資源管理器定位 .................................................27
通過共享控制臺定位 .................................................28
通過網(wǎng)絡(luò)位置定位 .....................................................28
通過目錄管理器定位 .................................................29
通過專業(yè)工具定位 .....................................................29
停用易泄露信息的功能.....................................................30
停用“文檔保留”功能 .............................................30
停用搜索保留功能 .....................................................30
停用隱藏共享功能 .....................................................31
停用感染報告功能 .....................................................32
停用脫機同步功能 .....................................................32
停用登錄監(jiān)控功能 .....................................................32
停用網(wǎng)絡(luò)發(fā)現(xiàn)功能 .....................................................33
基于角色認(rèn)證的遠(yuǎn)程接入配置.........................................33
一、創(chuàng)建AAA 認(rèn)證服務(wù)器 ......................................33
二、創(chuàng)建用戶及用戶組 .............................................34
三、創(chuàng)建角色 .............................................................34
四、創(chuàng)建角色映射規(guī)則 .............................................34
五、將角色映射規(guī)則與AAA 服務(wù)器綁定 ..............34
六、配置SCVPN 地址池 ..........................................34
七、配置SCVPN 實例——創(chuàng)建實例 ......................34
八、創(chuàng)建SCVPN 所屬安全域 ..................................35
九、創(chuàng)建隧道接口并引用SCVPN 隧道 ..................35
十、創(chuàng)建安全策略不同角色的用戶放行不同服務(wù) .35
十一、SCVPN 用戶登錄驗證 ...................................35
臨時離開系統(tǒng)也無憂.........................................................35
開啟登錄顯示功能 .....................................................36
監(jiān)控偷偷操作行為 .....................................................36
加鎖已經(jīng)啟用程序 .....................................................36
全面保護服務(wù)器.................................................................37
網(wǎng)絡(luò)現(xiàn)狀分析 .............................................................37
存在的問題 .................................................................37
改造方案 .....................................................................38
防火墻配置 .................................................................38
集中管理區(qū)交換機配置 .............................................38
項目經(jīng)驗總結(jié) .............................................................38
抓住搶占流量的真兇.........................................................39
起因 .............................................................................39
分析 .............................................................................39
問題排除 .....................................................................39
尋找ARP 攻擊源 .......................................................39
防范ARP 攻擊 ...........................................................41
讓密碼策略個性化.............................................................42
用Paros 檢查Web 安全漏洞 ............................................43
Paros proxy 簡介 .........................................................43
安裝與配置 .................................................................44
使用注意事項 .............................................................46
解開IE 打開后就關(guān)閉之謎 ...............................................47
第一步，更改IE 的主頁屬性 ...................................47
第二步，查看“系統(tǒng)配置實用程序” .......................47
第三步，查殺病毒 .....................................................47
第四步，修改“注冊表編輯器” ...............................48
第五步，驚現(xiàn)www.009c.com ...................................48
第六步，手工清除病毒程序 .....................................48
手動查殺“文件夾病毒”...................................................49
簡單查殺病毒 .............................................................49
尋找病毒本體 .............................................................49
手工殺毒 .....................................................................50
運行機理及染毒癥狀 .................................................50
幾點補充 .....................................................................51
防范硬盤泄露信息.............................................................51
使用shred ...................................................................51
使用DBAN .................................................................52
徒手“揪出”自啟動病毒.................................................53
揪出啟動文件夾中的病毒 .........................................53
揪出組策略設(shè)置中的病毒 .........................................53
揪出注冊表啟動項中的病毒 .....................................53
揪出服務(wù)列表中的病毒 .............................................54
揪出系統(tǒng)配置程序中的病毒 .....................................55
兩招打造安全網(wǎng)絡(luò).............................................................55
一、網(wǎng)絡(luò)拓?fù)?.............................................................55
二、安全需求 .............................................................56
三、通過訪問控制列表對網(wǎng)絡(luò)的通信流量進(jìn)行過濾 ........................................56
四、配置防火墻進(jìn)行功能區(qū)劃分，進(jìn)一步加強
網(wǎng)絡(luò)安全 .....................................................................57
黑客主流入侵方式揭密.....................................................57
目錄遍歷漏洞暴露含有敏感信息的文件 .................58
網(wǎng)站后臺路徑、管理賬號和密碼采用默認(rèn)設(shè)置而被入侵 .........................................58
因數(shù)據(jù)庫未做任何防下載處理而被“拖庫” ...........58
因存在注入漏洞而被猜解出賬號、密碼及后臺 .....59
0Day 漏洞暴露敏感賬號和密碼 ...............................59
后記 .............................................................................59
ARP 攻擊防范策略 ............................................................59
ARP 協(xié)議簡介 ............................................................60
認(rèn)識ARP 攻擊 ...........................................................60
ARP 攻擊防御策略 ....................................................61
路由器設(shè)置暗藏殺機.........................................................61
警惕定向廣播威脅 .....................................................61
警惕固件BUG 威脅...................................................61
警惕登錄密碼威脅 .....................................................62
警惕SNMP 設(shè)置威脅 ................................................62
警惕Telent 協(xié)議威脅 .................................................63
尋找Solaris 后門 ...............................................................63
一、分析腳本文件bd ................................................64
二、分析腳本文件doc ..............................................64
三、分析腳本文件ps ................................................64
四、分析腳本文件Update ........................................65
五、發(fā)現(xiàn)need.tar 被植入系統(tǒng) ..................................65
六、預(yù)防措施 .............................................................65
斬草要除根.........................................................................66
斬除網(wǎng)頁表單中的隱私 .............................................66
斬除Index.dat 中的隱私 ............................................67
斬除Flash Cookie 中的隱私 .....................................68
制作自動安裝補丁包.........................................................69
用IP 安全策略實現(xiàn)隔離 ...................................................70
認(rèn)識IP 安全策略 .......................................................70
配置過程 .....................................................................70
經(jīng)驗總結(jié) .....................................................................72
Windows 8 安全功能兩則 .................................................72
圖片加密讓系統(tǒng)安全登錄 .........................................72
安全提醒讓安全及時知曉 .........................................73
順利安裝網(wǎng)絡(luò)版客戶端.....................................................74
瑞星客戶端遠(yuǎn)程安裝的方法 .....................................74
瑞星客戶端遠(yuǎn)程安裝過程中報錯的處理方法 .........76
揪出潛藏威脅.....................................................................76
揪出潛藏陌生用戶 .....................................................76
揪出潛藏的木馬服務(wù)列表 .........................................77
揪出占用文件的黑手 .................................................78
揪出潛藏的自啟動病毒 .............................................79
挖掘交換機自身功能.........................................................79
配置Root 保護功能 ...................................................79
配置攻擊保護功能 .....................................................80
配置環(huán)路保護功能 .....................................................80
配置BPDU 保護功能 ................................................81
保證接入安全.....................................................................81
啟用802.1x 認(rèn)證功能 ................................................81
配置認(rèn)證控制模式 .....................................................82
配置認(rèn)證接入方式 .....................................................82
配置端口接入數(shù)量 .....................................................82
配置用戶認(rèn)證方法 .....................................................83
配置認(rèn)證請求次數(shù) .....................................................83
配置DHCP 觸發(fā)認(rèn)證 ................................................83
赤手空拳制服DLL 木馬 ...................................................84
查找可疑進(jìn)程 .............................................................84
找出可疑模塊 .............................................................84
清除DLL 木馬 ...........................................................85
手工清除Rose 木馬...........................................................85
現(xiàn)象描述 .....................................................................85
處理過程 .....................................................................85
原因分析 .....................................................................87
經(jīng)驗總結(jié) .....................................................................87
全面管理個人密碼.............................................................87
密碼設(shè)置 .....................................................................87
攻防結(jié)合，減少密碼丟失概率 .................................87
養(yǎng)成正確的密碼使用習(xí)慣 .........................................87
密碼管理 .....................................................................88
管理好個人計算機 .....................................................88
順利通過Web 登錄VRV ..................................................88
VRV 安裝在FAT32 格式分區(qū) ...................................88
VRV 安裝在NTFS 格式分區(qū) ....................................89
降低權(quán)限讓上網(wǎng)更安全.....................................................89
手工降低權(quán)限 .............................................................89
外力降低權(quán)限 .............................................................90
清除上網(wǎng)痕跡.....................................................................91
上網(wǎng)痕跡尋蹤 .............................................................91
方法一，刪除一般上網(wǎng)痕跡 .....................................92
方法二，刪除頑固的Index.dat 文件 ........................92
方法三，清除已刪除文件信息 .................................92
總結(jié) .............................................................................92
挖掘防火墻安全功能.........................................................92
預(yù)防內(nèi)網(wǎng)病毒 .............................................................93
控制非法接入 .............................................................93
限制主機上網(wǎng) .............................................................94
過濾垃圾郵件 .............................................................94
注冊表與網(wǎng)站安全.............................................................95
一、安全警告本領(lǐng) .....................................................95
二、限制病毒本領(lǐng) .....................................................95
三、預(yù)防信息泄露 .....................................................96
四、禁止程序本領(lǐng) .....................................................96
五、控制優(yōu)盤本領(lǐng) .....................................................97
安全管控系統(tǒng)服務(wù).............................................................97
揪出被替換的服務(wù) .....................................................98
識別不安全的服務(wù) .....................................................98
找出發(fā)生變化的服務(wù) .................................................99
停用有威脅的服務(wù) .....................................................99
遠(yuǎn)離內(nèi)網(wǎng)惡意侵襲...........................................................100
遠(yuǎn)離隱藏共享攻擊 ...................................................100
遠(yuǎn)離空連接攻擊 .......................................................100
遠(yuǎn)離密碼破解攻擊 ...................................................101
遠(yuǎn)離Ping 洪水攻擊 ..................................................101
遠(yuǎn)離程序漏洞攻擊 ...................................................102
遠(yuǎn)離ARP 欺騙攻擊 .................................................102
消滅Conficker 蠕蟲 .........................................................103
遭遇蠕蟲 ...................................................................103
出師不利 ...................................................................103
追本溯源 ...................................................................103
亡羊補牢 ...................................................................104
徒手應(yīng)對宏病毒...............................................................104
走近宏病毒 ...............................................................104
及時發(fā)現(xiàn)宏病毒 .......................................................105
徒手清除宏病毒 .......................................................105
手工防范宏病毒 .......................................................106
“軟硬”兼施防病毒.........................................................106
用好硬件設(shè)備安全功能是病毒防護“硬”道理 ...106
做好應(yīng)用軟件更新，提升基于應(yīng)用的安全 ...........107
由防病毒引發(fā)的思考 ...............................................107
危險服務(wù)“險”在何處...................................................108
Remote Registry 惡意修改鍵值 ...............................108
Terminal Services 威脅遠(yuǎn)程管理 ............................108
Server 暴露隱藏共享 ................................................109
DNS Client 泄露訪問行蹤 .......................................109
Scheduler 自動定時攻擊 ..........................................110
借路由器抗DDoS 攻擊...................................................110
一、泛洪攻擊防范 ...................................................110
二、掃描攻擊防范 ...................................................111
三、單包攻擊防范 ...................................................111
BIND 漏洞及升級 ............................................................112
MySQL 5.1 漏洞及升級 ...................................................113
1. 確認(rèn)MySQL 的版本 ............................................113
2. 備份數(shù)據(jù)庫中的數(shù)據(jù) ...........................................113
3. 下載MySQL 5.1.63 版本 .....................................113
4. 安裝MySQL 5.1.63 版本 .....................................113
5. 重啟MySQL 服務(wù) ................................................113
第2 章 故障診斷
供電引起視頻終端故障...................................................115
公司現(xiàn)狀 ...................................................................115
故障分析與解決 .......................................................115
經(jīng)驗總結(jié) ...................................................................115
地線失靈導(dǎo)致網(wǎng)絡(luò)故障...................................................116
電源地線故障網(wǎng)不通 ...............................................116
設(shè)備內(nèi)部故障導(dǎo)致零地線存在電壓 .......................116
設(shè)備外殼接地線老化導(dǎo)致接地故障 .......................116
解決SQL 2005 孤立用戶問題 ........................................117
數(shù)據(jù)庫訪問出故障 ...................................................117
故障分析過程 ...........................................................117
故障排除 ...................................................................118
經(jīng)驗總結(jié) ...................................................................118
網(wǎng)絡(luò)接入典型故障處理...................................................118
故障一：路由器板卡故障導(dǎo)致網(wǎng)絡(luò)不通 ...............118
故障二：路由器插槽故障導(dǎo)致網(wǎng)絡(luò)不通 ...............118
故障三：上級結(jié)點參數(shù)配置導(dǎo)致網(wǎng)絡(luò)無法連通 ...119
故障四：路由器接口工作模式設(shè)置不正確導(dǎo)致網(wǎng)絡(luò)不通......................................119
故障五：協(xié)議封裝錯誤導(dǎo)致網(wǎng)絡(luò)不通 ...................119
小結(jié) ...........................................................................119
交換機萬兆模塊升級錄...................................................119
故障現(xiàn)象 ...................................................................119
故障排查過程 ...........................................................120
升級系統(tǒng)軟件 ...........................................................120
經(jīng)驗總結(jié) ...................................................................121
SSL VPN 部署與排障 ......................................................121
SSL VPN 部署情況 ..................................................121
SSL VPN 客戶端的部署與安裝 ..............................122
分社使用SSL VPN 訪問總社內(nèi)網(wǎng)速度緩慢 .........122
經(jīng)驗總結(jié) ...................................................................122
服務(wù)器為何無法自動重啟...............................................123
配置方案 ...................................................................123
故障現(xiàn)象 ...................................................................123
故障排查 ...................................................................123
經(jīng)驗總結(jié) ...................................................................124
無緩存RAID 卡影響讀/ 寫性能 ....................................124
磁盤讀/ 寫速度異常緩慢 ........................................124
更換RAID 卡 ...........................................................125
經(jīng)驗總結(jié) ...................................................................125
無線路由器也升級...........................................................125
故障現(xiàn)象 ...................................................................125
故障排查過程 ...........................................................125
故障分析 ...................................................................125
無線路由升級過程 ...................................................126
正確下載升級文件 ...................................................126
經(jīng)驗總結(jié) ...................................................................126
策略路由引起的網(wǎng)絡(luò)故障...............................................126
設(shè)置外網(wǎng)通道 ...........................................................127
故障現(xiàn)象 ...................................................................127
故障分析 ...................................................................127
故障解決 ...................................................................127
經(jīng)驗總結(jié) ...................................................................127
兩交換機接口不匹配引發(fā)故障.......................................127
故障現(xiàn)象 ...................................................................128
故障排查 ...................................................................128
故障分析 ...................................................................128
故障排除 ...................................................................128
組策略解決共享打印設(shè)置...............................................129
客戶端無法安裝打印機 ...........................................129
故障排除 ...................................................................129
故障解決 ...................................................................129
網(wǎng)站升級鬧故障...............................................................130
問題一：網(wǎng)站維護提交數(shù)據(jù)時出錯 .......................130
問題二：Web 服務(wù)器不定時中斷服務(wù) ...................130
RID 分配問題導(dǎo)致網(wǎng)絡(luò)故障 ...........................................131
故障排查過程 ...........................................................131
解決方案 ...................................................................132
NAT 導(dǎo)致服務(wù)器解析故障 ..............................................133
故障分析 ...................................................................133
故障排查 ...................................................................133
解決辦法 ...................................................................134
經(jīng)驗總結(jié) ...................................................................134
慎用默認(rèn)VLAN ..............................................................134
相關(guān)設(shè)備主要配置 ...................................................134
問題初步描述及解決辦法 .......................................135
最終解決問題的方法 ...............................................135
問題原理分析 ...........................................................136
經(jīng)驗總結(jié) ...................................................................136
路由器CPU 過載引故障 .................................................136
故障現(xiàn)象 ...................................................................136
原因分析 ...................................................................136
處理方式 ...................................................................137
VMware 為何無法安裝64 位系統(tǒng) .................................137
更改文件屬主數(shù)據(jù)庫出故障...........................................138
網(wǎng)絡(luò)環(huán)境 ...................................................................138
故障現(xiàn)象 ...................................................................138
故障解決過程 ...........................................................138
處理周期出現(xiàn)的網(wǎng)絡(luò)故障...............................................139
網(wǎng)絡(luò)環(huán)境 ...................................................................139
故障現(xiàn)象 ...................................................................139
分析與處理 ...............................................................140
故障分析與解決 .......................................................140
經(jīng)驗總結(jié) ...................................................................141
MySQL 自增字段為何報錯 ............................................142
重裝Forefront TMG 故障解析 ........................................142
無法安裝配置存儲服務(wù)器，提示端口2171 被使用 .................................................142
安裝程序無法安裝ADAM ......................................143
安裝之后無法導(dǎo)入Forefront TMG 的配置 ............143
導(dǎo)入策略之后修改日志位置與計算機名稱 ...........143
排查服務(wù)器重啟故障.......................................................143
故障排查過程 ...........................................................143
故障分析 ...................................................................144
經(jīng)驗總結(jié) ...................................................................145
添加賬號引發(fā)應(yīng)用故障...................................................145
故障排查 ...................................................................145
故障分析 ...................................................................145
故障解決 ...................................................................146
經(jīng)驗總結(jié) ...................................................................146
配置不當(dāng)造成DNS 解析故障.........................................146
故障排查 ...................................................................146
原因分析 ...................................................................147
經(jīng)驗總結(jié) ...................................................................147
處理雙路由器環(huán)境故障...................................................148
故障排查過程 ...........................................................148
用戶網(wǎng)絡(luò)結(jié)構(gòu)說明 ...................................................148
故障解決 ...................................................................148
經(jīng)驗總結(jié) ...................................................................149
接口性能降低惹故障.......................................................149
光電轉(zhuǎn)換器性能降低引起的網(wǎng)絡(luò)故障 ...................149
終端性能降低引起的網(wǎng)絡(luò)故障 ...............................149
經(jīng)驗總結(jié) ...................................................................150
下載加速造成附件打開故障...........................................150
故障排查過程 ...........................................................150
經(jīng)驗總結(jié) ...................................................................151
查找意外的DHCP 服務(wù) ..................................................151
故障現(xiàn)象 ...................................................................151
故障排查過程 ...........................................................151
故障解決 ...................................................................152
經(jīng)驗總結(jié) ...................................................................152
DHCP 引起路由器級聯(lián)故障 ...........................................152
故障現(xiàn)象 ...................................................................152
故障分析 ...................................................................152
解決方案 ...................................................................153
經(jīng)驗總結(jié) ...................................................................153
Pppoe 應(yīng)用故障分析........................................................153
服務(wù)端壓力較大 .......................................................154
有標(biāo)簽的VLAN 中存在丟包 ..................................154
配置防火墻條目不能過多 .......................................154
Vista 和Windows 7 客戶端撥號不成功 ..................154
系統(tǒng)升級造成上網(wǎng)故障...................................................155
故障現(xiàn)象 ...................................................................155
故障排查過程 ...........................................................155
故障排除 ...................................................................155
經(jīng)驗總結(jié) ...................................................................155
時間問題引發(fā)論壇板塊故障...........................................156
故障排查 ...................................................................156
故障解決 ...................................................................156
經(jīng)驗總結(jié) ...................................................................156
追查系統(tǒng)訪問緩慢的根源...............................................156
故障現(xiàn)象 ...................................................................157
故障排查過程 ...........................................................157
揭開謎底 ...................................................................157
故障分析 ...................................................................157
經(jīng)驗總結(jié) ...................................................................158
拯救“生病”的防火墻...................................................158
問題一：設(shè)備死機，無法獲取設(shè)備的序列號 ..............158
問題二：設(shè)備故障，通過更換業(yè)務(wù)板無法解決 ...158
問題三：設(shè)備運行溫度過高 ...................................158
問題四：雙機切換只切換交換，路由無法自動切換 ..................................................159
恢復(fù)RAID-5 雙硬盤數(shù)據(jù) ...............................................159
故障現(xiàn)象 ...................................................................160
分析處理 ...................................................................160
故障處理 ...................................................................160
經(jīng)驗總結(jié) ...................................................................160
順序也能導(dǎo)致故障...........................................................161
故障排查 ...................................................................161
故障分析 ...................................................................162
經(jīng)驗總結(jié) .................................................................162
更換MAC 地址排故障 ...................................................162
故障現(xiàn)象 ...................................................................162
故障排查過程 ...........................................................162
故障分析 ...................................................................163
為何無法創(chuàng)建線程...........................................................163
故障現(xiàn)象 ...................................................................163
故障分析 ...................................................................163
解決方法 ...................................................................164
關(guān)注交換機環(huán)路...............................................................164
故障描述 ...................................................................164
故障排查 ...................................................................164
故障處理 ...................................................................165
故障分析 ...................................................................165
經(jīng)驗總結(jié) ...................................................................165
拒絕服務(wù)式攻擊引故障...................................................165
故障排查 ...................................................................166
故障分析 ...................................................................166
事后措施 ...................................................................166
防火墻為何拒絕啟動.......................................................166
故障現(xiàn)象 ...................................................................166
故障排查 ...................................................................167
故障解決 ...................................................................167
雙機熱備也有故障...........................................................167
故障現(xiàn)象 ...................................................................167
解決方案 ...................................................................167
實施步驟 ...................................................................168
經(jīng)驗總結(jié) ...................................................................168
服務(wù)器搬家惹煩惱...........................................................168
故障排查 ...................................................................169
故障原因 ...................................................................169
解決辦法 ...................................................................169
安裝大硬盤受挫...............................................................169
故障現(xiàn)象 ...................................................................170
簡述MBR 和GPT ....................................................170
加載大容量硬盤 .......................................................170
ACL 引起HSRP 故障......................................................170
故障現(xiàn)象 ...................................................................170
故障排查 ...................................................................171
經(jīng)驗總結(jié) ...................................................................171
解決AD 域服務(wù)故障 .......................................................172
AD 域服務(wù)問題 ........................................................172
故障解決方法 ...........................................................172
解決HMC 獲取信息故障 ...............................................173
故障分析 ...................................................................173
故障排查 ...................................................................173
經(jīng)驗總結(jié) ...................................................................174
排查OSPF 網(wǎng)絡(luò)路由故障 ...............................................174
故障實例一：通過虛鏈路實現(xiàn)跨區(qū)域接入主干區(qū)域，但因路由器之間Vlink 配置錯誤，而無法學(xué)到上級路由 .......................................................174
故障實例二：OSPF 網(wǎng)絡(luò)的末端區(qū)域引入Eigrp 協(xié)議路由，由于區(qū)域類型定義錯誤引起的路由故障.. ............. ...................175
一波三折重建磁盤陣列...................................................176
故障現(xiàn)象 ...................................................................176
故障處理 ...................................................................177
經(jīng)驗總結(jié) ...................................................................177
數(shù)據(jù)公網(wǎng)旅行記...............................................................178
遠(yuǎn)程問診 ...................................................................178
現(xiàn)場查看 ...................................................................178
探索求證 ...................................................................179
豁然開朗 ...................................................................179
真相大白 ...................................................................179
全零MAC 地址惹故障 ...................................................180
網(wǎng)絡(luò)拓?fù)浼肮收犀F(xiàn)象 ...............................................180
故障分析及排除 .......................................................180
故障分析 ...................................................................181
經(jīng)驗總結(jié) ...................................................................181
解決新聞采集亂碼故障...................................................181
故障排查 ...................................................................182
故障分析 ...................................................................182
故障解決 ...................................................................182
日志過大服務(wù)器出故障...................................................183
故障排查 ...................................................................183
故障解決 ...................................................................184
故障分析 ...................................................................184
小型機重啟丟失鍵盤.......................................................185
小型機重啟后鍵盤無法使用 ...................................185
故障診斷用Diag ......................................................185
ASM 給計算機啟動降速 .........................................187
經(jīng)驗總結(jié) ...................................................................188
php-cgi 為何占用CPU 100% .........................................188
故障現(xiàn)象 ...................................................................188
故障分析 ...................................................................188
故障解決 ...................................................................189
遠(yuǎn)程解決內(nèi)網(wǎng)故障...........................................................189
找出問題產(chǎn)生的原因 ...............................................190
解決問題需同步三個賬號密碼 ...............................190
排查80 端口故障.............................................................190
故障排查過程 ...........................................................191
故障排除 ...................................................................191
經(jīng)驗總結(jié) ...................................................................191
排除交換機端口連通性故障...........................................192
排除物理層連通性故障 ...........................................192
排除VLAN 和中繼故障 ..........................................192
排除VTP 故障 .........................................................193
排除生成樹故障 .......................................................194
經(jīng)驗總結(jié) ...................................................................194
解決HWTACACS 認(rèn)證登錄故障 ..................................194
網(wǎng)絡(luò)結(jié)構(gòu) ...................................................................195
配置過程 ...................................................................195
驗證操作 ...................................................................195
故障分析 ...................................................................195
經(jīng)驗總結(jié) ...................................................................196
MAC 地址善變之謎 ........................................................196
故障現(xiàn)象 ...................................................................196
確定原因 ...................................................................196
經(jīng)驗總結(jié) ...................................................................196
交換機配置錯誤導(dǎo)致故障...............................................197
故障現(xiàn)象 ...................................................................197
故障排查過程 ...........................................................197
故障分析 ...................................................................197
網(wǎng)關(guān)鬧“罷工”.................................................................197
停電恢復(fù)后網(wǎng)絡(luò)中斷 ...............................................197
故障排查 ...................................................................198
故障處理 ...................................................................198
經(jīng)驗總結(jié) ...................................................................198
解決電腦“神秘”開機故障...........................................198
故障排查 ...................................................................199
故障解決 ...................................................................199
經(jīng)驗總結(jié) ...................................................................199
趨勢數(shù)據(jù)庫服務(wù)器重啟之謎...........................................200
故障現(xiàn)象 ...................................................................200
故障排查過程 ...........................................................200
修改數(shù)據(jù)庫備份時間 ...............................................201
故障分析 ...................................................................201
解決無線網(wǎng)絡(luò)掉線故障...................................................201
環(huán)境因素影響信號傳輸 ...........................................201
無線AP 負(fù)載過大降低設(shè)備性能 ............................202
信道沖突引起通信效能降低 ...................................202
無線服務(wù)功能未完全開啟 .......................................202
混合無線網(wǎng)絡(luò)兼容性引起的掉線問題 ...................202
ARP 病毒欺騙造成通聯(lián)故障 ..................................203
無線AP 開啟MAC 地址過濾 .................................203
AP 參數(shù)設(shè)置不妥 .....................................................203
無線網(wǎng)卡驅(qū)動兼容性差 ...........................................203
網(wǎng)絡(luò)安全隔離卡常見故障...............................................204
網(wǎng)絡(luò)安全隔離卡的使用方式 ...................................204
故障一：初次安裝網(wǎng)絡(luò)隔離卡時，提示本地網(wǎng)絡(luò)連接斷開 ..........................204
故障二：安裝的是IDE 網(wǎng)絡(luò)隔離卡在未進(jìn)入操作系統(tǒng)時，無法顯示網(wǎng)絡(luò)( 內(nèi)、外網(wǎng)) 選擇開機“菜單程序” .....................................................................204
故障三：當(dāng)要切換內(nèi)/ 外網(wǎng)時，提示隔離卡狀態(tài)未知，造成切換失敗而無法切換.....205
故障四：在正確安裝網(wǎng)絡(luò)隔離卡后，開機時提示找不到硬盤或系統(tǒng)...................205
經(jīng)驗總結(jié) ...................................................................205
客戶端組件更新遇麻煩...................................................205
故障排查 ...................................................................205
故障解決 ...................................................................206
經(jīng)驗總結(jié) ...................................................................206
網(wǎng)段不通為哪般...............................................................207
故障排查過程 ...........................................................207
故障分析 ...................................................................207
經(jīng)驗總結(jié) ...................................................................208
時間也會影響打印...........................................................208
故障排查 ...................................................................208
修改終端時間 ...........................................................208
故障解決 ...................................................................208
遷移地址段出故障...........................................................209
網(wǎng)絡(luò)環(huán)境 ...................................................................209
網(wǎng)絡(luò)環(huán)境的改變 .......................................................209
故障現(xiàn)象 ...................................................................209
最初的故障分析 .......................................................210
故障真相 ...................................................................210
解決措施 ...................................................................211
經(jīng)驗總結(jié) ...................................................................211
一波三折查網(wǎng)卡...............................................................211
環(huán)境介紹 ...................................................................211
問題初現(xiàn) ...................................................................211
現(xiàn)場體驗 ...................................................................212
接近真相 ...................................................................212
完美解決 ...................................................................212
硬盤升級要兼容...............................................................213
硬件現(xiàn)狀 ...................................................................213
新裝硬盤無法識別 ...................................................213
故障排查過程 ...........................................................213
故障分析 ...................................................................213
光端機連接數(shù)引故障.......................................................214
網(wǎng)絡(luò)環(huán)境 ...................................................................214
故障現(xiàn)象 ...................................................................214
故障分析 ...................................................................214
故障分析結(jié)果 ...........................................................215
故障解決 ...................................................................216
事后措施 ...................................................................216
排除硬盤分區(qū)故障...........................................................216
故障診斷 ...................................................................216
故障排除 ...................................................................216
經(jīng)驗總結(jié) ...................................................................216
CentOS 為何出現(xiàn)丟包 .....................................................217
網(wǎng)絡(luò)環(huán)境 ...................................................................217
故障現(xiàn)象 ...................................................................217
故障排查 ...................................................................217
故障解決 ...................................................................217
徹底解決 ...................................................................217
經(jīng)驗總結(jié) ...................................................................218
私接路由惹麻煩...............................................................218
故障排查 ...................................................................218
故障分析 ...................................................................219
故障解決 ...................................................................219
排查Oracle 經(jīng)典錯誤 ......................................................219
故障分析 ...................................................................220
故障解決 ...................................................................220
經(jīng)驗總結(jié) ...................................................................221
排查無盤系統(tǒng)啟動故障...................................................221
基本情況 ...................................................................221
故障現(xiàn)象 ...................................................................221
故障分析 ...................................................................221
故障排查 ...................................................................222
故障處理 ...................................................................223
經(jīng)驗總結(jié) ...................................................................223
數(shù)據(jù)庫實例名稱惹麻煩...................................................223
故障排查 ...................................................................223
數(shù)據(jù)庫實例名 ...........................................................224
經(jīng)驗總結(jié) ...................................................................224
跳出360 安裝死循環(huán).......................................................224
故障排查 ...................................................................225
故障解決 ...................................................................225
計費系統(tǒng)升級網(wǎng)中斷.......................................................225
故障排查 ...................................................................226
故障解決 ...................................................................226
故障分析 ...................................................................226
查找網(wǎng)段訪問故障...........................................................226
故障現(xiàn)象 ...................................................................227
故障排查 ...................................................................227
故障解決 ...................................................................227
故障分析 ...................................................................227
用事件查看器解難題.......................................................227
故障排查過程 ...........................................................228
故障分析 ...................................................................228
故障解決 ...................................................................228
經(jīng)驗總結(jié) ...................................................................229
供電引起視頻終端故障...................................................229
公司現(xiàn)狀 ...................................................................229
故障分析與解決 .......................................................229
經(jīng)驗總結(jié) ...................................................................230
解決多核心網(wǎng)絡(luò)安全設(shè)置故障.......................................230
問題描述 ...................................................................230
故障分析 ...................................................................230
故障排除 ...................................................................232
交換機萬兆模塊升級錄...................................................232
故障現(xiàn)象 ...................................................................232
故障排查過程 ...........................................................232
升級系統(tǒng)軟件 ...........................................................233
經(jīng)驗總結(jié) ...................................................................234
SSL VPN 部署與排障 ......................................................234
SSL VPN 部署情況 ..................................................234
SSL VPN 客戶端的部署與安裝 ..............................235
分社使用SSL VPN 訪問總社內(nèi)網(wǎng)速度緩慢 .........235
經(jīng)驗總結(jié) ...................................................................235
服務(wù)器為何無法自動重啟...............................................236
配置方案 ...................................................................236
故障現(xiàn)象 ...................................................................236
故障排查 ...................................................................236
經(jīng)驗總結(jié) ...................................................................237
無緩存RAID 卡影響讀/ 寫性能 ....................................237
磁盤讀/ 寫速度異常緩慢 ........................................238
更換RAID 卡 ...........................................................238
經(jīng)驗總結(jié) ...................................................................238
無線路由器也升級...........................................................238
故障排查過程 ...........................................................238
故障分析 ...................................................................238
無線路由升級過程 ...................................................239
正確下載升級文件 ...................................................239
經(jīng)驗總結(jié) ...................................................................239
策略路由引起的網(wǎng)絡(luò)故障...............................................240
設(shè)置外網(wǎng)通道 ...........................................................240
故障現(xiàn)象 ...................................................................240
故障分析 ...................................................................240
故障解決 ...................................................................240
經(jīng)驗總結(jié) ...................................................................240
兩交換機接口不匹配引故障...........................................241
故障排查 ...................................................................241
故障分析 ...................................................................241
故障排除 ...................................................................241
配置RADIUS 協(xié)議常見故障 ..........................................242
RADIUS 協(xié)議 ...........................................................242
RADIUS 協(xié)議的交互流程 ......................................242
RADIUS 協(xié)議的配置 ...............................................243
故障一：用戶本地認(rèn)證總被拒絕 ...........................244
故障二：用戶RADIUS 認(rèn)證總被拒絕 ..................244
故障三：一個用戶已經(jīng)連入，在show aaa user時卻看不到 ........................................244
故障四：并沒有配置認(rèn)證，仍能對用戶進(jìn)行認(rèn)證 ..............................................244
小交換機造成上網(wǎng)掉線...................................................244
故障現(xiàn)象 ...................................................................245
故障排查過程 ...........................................................245
經(jīng)驗總結(jié) ...................................................................246
第3 章 系統(tǒng)運維
設(shè)置計算機隔離訪問.......................................................248
網(wǎng)絡(luò)環(huán)境 ...................................................................248
限制其他VLAN 計算機訪問財務(wù)服務(wù)器 ..............248
資源訪問權(quán)限 ...........................................................249
安全組客戶端計算機驗證 .......................................250
用IPTraf 監(jiān)控網(wǎng)絡(luò)終端流量 ..........................................251
安裝軟件 ...................................................................251
查看網(wǎng)絡(luò)流量 ...........................................................251
用OpenMeetings 免費搭建視頻會議平臺 .....................252
OpenMeetings 簡介 ..................................................252
安裝步驟 ...................................................................253
使用視頻會議系統(tǒng) ...................................................254
限制終端聯(lián)外網(wǎng)...............................................................255
當(dāng)前管控措施 ...........................................................256
外聯(lián)通道建立過程 ...................................................256
遠(yuǎn)程訪問MySQL ............................................................257
遠(yuǎn)程登錄設(shè)置 ...........................................................257
遠(yuǎn)程訪問指定的數(shù)據(jù)庫 ...........................................258
收回用戶權(quán)限 ...........................................................258
需要注意的問題 .......................................................258
經(jīng)驗總結(jié) ...................................................................258
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