5

[root@pptp-server ~]# /etc/init.d/iptables  save 
iptables: Saving firewall rules to /etc/sysconfig/iptables:[  OK  ]
[root@pptp-server ~]# vim /etc/sysconfig/iptables
[root@pptp-server ~]# /etc/init.d/iptables  reload 
iptables: Trying to reload firewall rules:                 [  OK  ]
[root@pptp-server ~]#  

[root@pptp-server ~]# vim /etc/sysconfig/iptables
[root@pptp-server ~]# cat /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Tue Aug 25 00:02:45 2015
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [1081:165593]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
-A INPUT -p icmp -j ACCEPT 
-A INPUT -i lo -j ACCEPT 
-A INPUT -p gre -j ACCEPT 
-A INPUT -p tcp -m tcp --dport 1723 -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 
COMMIT
# Completed on Tue Aug 25 00:02:45 2015
# Generated by iptables-save v1.4.7 on Tue Aug 25 00:02:45 2015
*nat
:PREROUTING ACCEPT [79:4384]
:POSTROUTING ACCEPT [4:250]
:OUTPUT ACCEPT [4:250]
-A POSTROUTING -s 192.168.123.0/24 -o eth0 -j MASQUERADE 
COMMIT
# Completed on Tue Aug 25 00:02:45 2015
[root@pptp-server ~]# /etc/init.d/iptables  reload 
iptables: Trying to reload firewall rules:                 [  OK  ]
[root@pptp-server ~]#