#再安装个防火墙，以及setup中配套的防火墙设置、网络设置如下
[root@localhost ~]# yum install iptables
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package iptables.x86_64 0:1.4.7-9.el6 will be updated
--> Processing Dependency: iptables = 1.4.7-9.el6 for package: iptables-ipv6-1.4.7-9.el6.x86_64
---> Package iptables.x86_64 0:1.4.7-11.el6 will be an update
--> Running transaction check
---> Package iptables-ipv6.x86_64 0:1.4.7-9.el6 will be updated
---> Package iptables-ipv6.x86_64 0:1.4.7-11.el6 will be an update
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================================
Updating:
iptables x86_64 1.4.7-11.el6 base 252 k
Updating for dependencies:
iptables-ipv6 x86_64 1.4.7-11.el6 base 97 k
Transaction Summary
=====================================================================================================================================================
Upgrade 2 Package(s)
Total download size: 349 k
Is this ok [y/N]: y
Downloading Packages:
(1/2): iptables-1.4.7-11.el6.x86_64.rpm | 252 kB 00:00
(2/2): iptables-ipv6-1.4.7-11.el6.x86_64.rpm | 97 kB 00:00
-----------------------------------------------------------------------------------------------------------------------------------------------------
Total 240 kB/s | 349 kB 00:01
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : iptables-1.4.7-11.el6.x86_64 1/4
Updating : iptables-ipv6-1.4.7-11.el6.x86_64 2/4
Cleanup : iptables-ipv6-1.4.7-9.el6.x86_64 3/4
Cleanup : iptables-1.4.7-9.el6.x86_64 4/4
Verifying : iptables-1.4.7-11.el6.x86_64 1/4
Verifying : iptables-ipv6-1.4.7-11.el6.x86_64 2/4
Verifying : iptables-ipv6-1.4.7-9.el6.x86_64 3/4
Verifying : iptables-1.4.7-9.el6.x86_64 4/4
Updated:
iptables.x86_64 0:1.4.7-11.el6
Dependency Updated:
iptables-ipv6.x86_64 0:1.4.7-11.el6
Complete!
[root@localhost ~]#