redhat linux6.5下执行/etc/rc.d/init.d/iptables save后iptables配置又回到最初默认配置？这是为啥？

Question

修改后的配置：

[root@ZHUANFA ~]# vi /etc/sysconfig/iptables

# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
iptables -t nat -A POSTROUTING -s 192.10.1.0/24 -o eth0 -j SNAT --to 200.10.1.10

iptables -t nat -A PREROUTING  -i eth0 -p tcp --dport 8080 -j DNAT --to 192.10.1.220:80

执行[root@ZHUANFA ~]# /etc/rc.d/init.d/iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]

后，再查看iptables配置，又回到最初的默认配置！！

[root@ZHUANFA ~]# cat /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Wed Apr  1 10:27:17 2015
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [14:1660]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A INPUT -i lo -j ACCEPT 
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT 
-A INPUT -j REJECT --reject-with icmp-host-prohibited 
-A FORWARD -j REJECT --reject-with icmp-host-prohibited 
COMMIT
# Completed on Wed Apr  1 10:27:17 2015
[root@ZHUANFA ~]
这是为啥？？？？

Answer 1

正确.

Answer 2

你执行save 就是将当前的规则保存到
/etc/sysconfig/iptables 文件，意味着你刚才保存到这个文件的被save改写了........

Answer 3

iptables文件也不能直接写命令

Answer 4

网上百度了！有这么多中保存iptables的方法！！！效果是否都一样还是？？？

service iptables save

/sbin/service iptables save
/etc/init.d/iptables save
/etc/rc.d/init.d/iptables save

Answer 5

ok！已经修改了！但还是没找到 解决方法！

Answer 6

你的标题中的linux应该改为RHEL/CentOS/OracleLinux这一类的更合适，ubuntu,debian可没有/etc/sysconfig/iptables，不要以为所有的linux都一样

Answer 7

重启后就没了！没有达到保存永久生效的！

Answer 8

service iptables restart下看看呢