张宴的博客

IP别名+TCP转发+端口映射实现跨网络访问[原创]

Tue, 21 Aug 2007 10:46:21 +0000

　　[文章作者：张宴本文版本：v1.0 最后修改：2007.08.21 转载请注明出处：http://blog.zyan.cc]

　　我这两天在工作中遇到了一些问题，在今天下午全部解决，于是决定写一篇文章，将实现方法记录下来：

　　一、背景环境：
　　1、都是Linux服务器；
　　2、“服务器A”与“服务器C”不在同一网络，两者之间是不通的；
　　3、“服务器A”、“服务器C”分别与“服务器B”相通。

　　二、要实现的需求：
　　1、让“服务器A”上的PHP程序能够连接“服务器C”上的MySQL数据库（IP：10.10.1.4，端口：3306）；
　　2、不允许在“服务器A”上的PHP程序中更改MySQL地址（10.10.1.4）和MySQL端口（3306）。

　　三、实现原理：
　　理论上从“服务器A”是无法直接连接“服务器C”的IP地址（10.10.1.4）及其3306端口的【图中的虚线】，但通过“IP别名+TCP转发+端口映射”，我在“服务器A”上的PHP程序无须作任何修改的情况下实现了这项功能【图中的实线】。
　　访问路线：“服务器A”上的PHP程序─→虚拟10.10.1.4:3306─→192.168.1.3:8520─→真实10.10.1.4:3306

　　

　　四、实现方法：
............

Tags - linux , php , iptables

[评论] IP别名+TCP转发+端口映射实现跨网络访问[原创]

Tue, 28 Aug 2007 14:54:52 +0000

如果是比较大的并发访问，这种方法应该会影响到程序执行时间的吧

[评论] IP别名+TCP转发+端口映射实现跨网络访问[原创]

Wed, 12 Sep 2007 06:29:00 +0000

你还不如直接说：A通过B去映射C

[评论] IP别名+TCP转发+端口映射实现跨网络访问[原创]

Tue, 03 Jun 2008 06:49:12 +0000

rnatd + iptables 哎，为什么不用 ssh tcp forward 呢？
嘿嘿，我知道sina的 sshd 都禁止了ssh 转发。。

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