Re: Why is iptables configured to accept packets on ports 50 and 51?

[Eero Volotinen <eero.volotinen@xxxxxx>]

2011/5/17 Aleksey Tsalolikhin <atsaloli.tech@xxxxxxxxx>:
> [root@hwdltsaloli ~]# cat /etc/sysconfig/iptables
> # Firewall configuration written by system-config-securitylevel
> # Manual customization of this file is not recommended.
> *filter
> :INPUT ACCEPT [0:0]
> :FORWARD ACCEPT [0:0]
> :OUTPUT ACCEPT [0:0]
> :RH-Firewall-1-INPUT - [0:0]
> -A INPUT -j RH-Firewall-1-INPUT
> -A FORWARD -j RH-Firewall-1-INPUT
> -A RH-Firewall-1-INPUT -i lo -j ACCEPT
> -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT
> -A RH-Firewall-1-INPUT -p 50 -j ACCEPT
> -A RH-Firewall-1-INPUT -p 51 -j ACCEPT
> -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
> -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
> COMMIT

http://en.wikipedia.org/wiki/IPsec ?

--
Eero
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