[root@awknet01 ~]# uname -a
Linux hostname 2.6.18-8.1.4.el5.028stab035.1PAE #1 SMP Sat Jun 9 02:27:12 MSD 2007 i686 athlon i386 GNU/Linux

[root@hib ~]# cat /etc/issue
CentOS release 4.5 (Final)
[root@hib ~]# iptables --version
iptables v1.2.11
[root@hib ~]# service iptables start
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: mangle filter             [  OK  ]
[root@hib ~]# service iptables status
Firewall is stopped.

[root@hib /]# cat /etc/issue
CentOS release 5 (Final)
[root@hib /]# iptables --version
iptables v1.3.5
[root@hib /]# service iptables start
Flushing firewall rules:                                   [  OK  ]
Setting chains to policy ACCEPT: mangle filter             [  OK  ]
[root@hib /]# service iptables status
Table: mangle
Chain PREROUTING (policy ACCEPT)
num  target     prot opt source               destination

Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination

Chain POSTROUTING (policy ACCEPT)
num  target     prot opt source               destination

Table: filter
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
num  target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination