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客户的公网出口是两台防火墙串接，Pix525作为内网防火墙，netscreen作为外网防火墙，采用两层地址映射的方式
pix后有两台主机，一台为unix服务器，地址为134.64.2.10,之前仅在公网上开放了7001与9001端口，另一台为pc server作为测试机地址为134.64.2.18此前没有出公网，pix将两台主机分别mip为192.168.200.100与 192.168.200.104，netscreen再将这两个192地址映射为公网地址；
出于业务需要，主机需要调用公网上的某台服务器的smtp，即需要开放两台主机外出访问25端口的权限，我对pix和netscreen做了如下配置：
pix的acl配置：
access-list 101 permit tcp any host 192.168.200.100 eq 7001
access-list 101 permit tcp any host 192.168.200.100 eq 9001
access-list 101 permit tcp any host 192.168.200.103 eq 7001
access-list 101 permit tcp any host 192.168.200.103 eq 9001
access-list 101 permit tcp any host 192.168.200.104 eq smtp
access-list 101 permit tcp any host 192.168.200.100 eq smtp
access-list 101 permit icmp any host 192.168.200.100 echo-reply
access-list 101 permit icmp any host 192.168.200.104 echo-reply
access-group 101 in interface outside
netscreen上做了如下policy配置：
set policy id 14 from "Untrust" to "Global" "Any" "MIP(x.x.x.35)" "7001" Permit
set policy id 0 name "go-out" from "Trust" to "Untrust" "192.168.100.0/24" "192.168.100.0/24" "7001" Permit
set policy id 13 from "Untrust" to "Global" "Any" "MIP(x.x.x.35)" "9001" Permit
set policy id 1 from "Trust" to "Untrust" "192.168.100.0/24" "192.168.100.0/24" "9001" Permit
set policy id 2 from "Untrust" to "Trust" "Any" "Any" "MAIL" Permit
set policy id 3 from "Trust" to "Untrust" "Any" "Any" "MAIL" Permit
set policy id 4 from "Untrust" to "Global" "Any" "MIP(x.x.x.35)" "MAIL" Permit
set policy id 5 from "Untrust" to "Global" "Any" "MIP(x.x.x.3" "MAIL" Permit
x.x.x.35是134.64.2.10的公网地址
x.x.x.38是134.64.2.18的公网地址
经过配置以后做测试，测试机可以顺利联通远端25端口，但是正式机却怎么也联不上公网地址
1、是否与unix本地没有打开25端口有关？连接远程25端口需要本地主机自身也同时打开25端口吗？
2、是否与主机双网卡多地址绑定有关？我已经在主机里面添加了目标主机route add net 210.x.x.0 gateway 134.64.2.1（内网pix地址）的静态路由了，还是不通. |
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发表于 2006-07-31 13:39
