IPTable Rules... again

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Hi,

I have the following  rules on my router/gateway: 

*nat
:PREROUTING ACCEPT 
:INPUT ACCEPT 
:OUTPUT ACCEPT 
:POSTROUTING ACCEPT 
-A POSTROUTING -d 93.186.25.52/32 -m comment --comment "bb" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p tcp -m tcp --dport 53 -m comment --comment "domain" o eth0 -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p udp -m udp --dport 53 -m comment --comment "domain" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p tcp -m tcp --dport 995 -m comment --comment "pop3s" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p udp -m udp --dport 995 -m comment --comment "pop3s" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p tcp -m tcp --dport 587 -m comment --comment "submission" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.0/8 -p udp -m udp --dport 587 -m comment --comment "submission" -j SNAT --to-source 41.94.39.49-41.94.39.51
-A POSTROUTING -s 10.0.0.3/32 -j o eth0 -j SNAT --to-source 41.94.39.49-41.94.39.51
COMMIT
*filter
:INPUT ACCEPT 
:FORWARD ACCEPT 
:OUTPUT ACCEPT 
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth1 -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 -m state --state RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -p icmp -j ACCEPT
-A FORWARD -i lo -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p tcp -m tcp --dport 53 -m comment --comment "domain" -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p udp -m udp --dport 53 -m comment --comment "domain" -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p tcp -m tcp --dport 995 -m comment --comment "pop3s" -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p udp -m udp --dport 995 -m comment --comment "pop3s" -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p tcp -m tcp --dport 587 -m comment --comment "submission" -j ACCEPT
-A FORWARD -i eth1 -o eth0 -p udp -m udp --dport 587 -m comment --comment "submission" -j ACCEPT
-A FORWARD -s 10.0.0.3/32 -i eth1 -o eth0 -j ACCEPT
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT

for some reason I can't make a connection to the external mail server from inside the lan. even from the 10.0.0.3 address which should be allowed to do anything.
everything used to work when i used MASQUERADing but stopped once i switched to SNAT. 
Can anybody help me? What am I doing wrong??

Thanks
--
To unsubscribe from this list: send the line "unsubscribe netfilter" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Linux Netfilter Development]     [Linux Kernel Networking Development]     [Linux Networking Development]     [Linux Kernel Development]     [Linux Resources]     [LARTC]     [Bugtraq]     [Consulting]     [Free Internet Dating]     [Yosemite Forum]     [Photo]

Add to Google Powered by Linux