F5 iRules编程宝典.pdf

【实例截图】

【核心代码】

目录
1. iRules 介绍及应用领域 .................................................................................................... 2
1) iRules 介绍.............................................................................................................................................2
2) iRules 开収工具 iRule Editor..............................................................................................................3
2. iRules 编程基础 ................................................................................................................ 6
1) TCL 语言和命令结构.............................................................................................................................6
a) TCL 语言简介 ....................................................................................................................................6
b) iRules 的命令结构............................................................................................................................7
c) iRules 的注释语句.................................................................................................................................7
2) 变量.........................................................................................................................................................8
a) 简单变量 ............................................................................................................................................8
b) 数组变量 ............................................................................................................................................8
c) 全局变量.................................................................................................................................................8
d) Class ..................................................................................................................................................9
e) 变量的置换 ......................................................................................................................................10
3) 数据类型...............................................................................................................................................10
a) 数值和字符串 ..................................................................................................................................10
b) 反斜杠置换 ......................................................................................................................................10
c) 双引号和大括号...................................................................................................................................11
4) 操作符...................................................................................................................................................11
a) 运算符和优先级 ..............................................................................................................................11
b) 数学函数 ..........................................................................................................................................12
5) 事件.......................................................................................................................................................13
6) 命令.......................................................................................................................................................17
7) 逻辑流模型...........................................................................................................................................17
8) CLIENT SIDE 和 SERVER SIDE .......................................................................................................19
3. 编写第一个 iRules .......................................................................................................... 21
4. 常用 iRules 分析 ............................................................................................................. 22
1) 根据不同 URI 分配用户访问连接到不同的 POOL...........................................................................22
2) http 访问转向......................................................................................................................................23
3) 根据 HTTP Header 包字段进行会话保持 ........................................................................................23
4) 根据目的地址选择 outbound 路径 .................................................................................................24
5) 依据 Session_ID 进行会话保持.........................................................................................................24
6) 单个 IP 的并収数量限制......................................................................................................................25
7) DNS Flood 攻击防护.........................................................................................................................26
5. 如何编写运行快速的 iRules .......................................................................................... 28
6. 参考资料......................................................................................................................... 29