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Old 14th August 2005, 11:02
davidg davidg is offline
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Default Firewall problem

I can Telnet from localhost to port 25, but not from a remote computer. Also I can telnet on port 110 local and remote no problem. My server is behind a router, but the server is in a dmz so I do not think that is blocking. Also if I re-start the server I have to manually start the firewall from the ispconfig control panel. Thanks for your help.

I believe its a firewall issue. Here is the output from iptables -L

Chain INPUT (policy DROP)
target prot opt source destination
DROP tcp -- anywhere 127.0.0.0/8
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
DROP all -- BASE-ADDRESS.MCAST.NET/4 anywhere
PUB_IN all -- anywhere anywhere
PUB_IN all -- anywhere anywhere
PUB_IN all -- anywhere anywhere
DROP all -- anywhere anywhere

Chain FORWARD (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
DROP all -- anywhere anywhere

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
PUB_OUT all -- anywhere anywhere
PUB_OUT all -- anywhere anywhere
PUB_OUT all -- anywhere anywhere

Chain INT_IN (0 references)
target prot opt source destination
ACCEPT icmp -- anywhere anywhere
DROP all -- anywhere anywhere

Chain INT_OUT (0 references)
target prot opt source destination
ACCEPT icmp -- anywhere anywhere
ACCEPT all -- anywhere anywhere

Chain PAROLE (9 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere

Chain PUB_IN (3 references)
target prot opt source destination
ACCEPT icmp -- anywhere anywhere icmp destination-unreachable
ACCEPT icmp -- anywhere anywhere icmp echo-reply
ACCEPT icmp -- anywhere anywhere icmp time-exceeded
ACCEPT icmp -- anywhere anywhere icmp echo-request
PAROLE tcp -- anywhere anywhere tcp dpt:ftp
PAROLE tcp -- anywhere anywhere tcp dpt:ssh
PAROLE tcp -- anywhere anywhere tcp dpt:smtp
PAROLE tcp -- anywhere anywhere tcp dpt:domain
PAROLE tcp -- anywhere anywhere tcp dpt:http
PAROLE tcp -- anywhere anywhere tcp dpt:81
PAROLE tcp -- anywhere anywhere tcp dptop3
PAROLE tcp -- anywhere anywhere tcp dpt:https
PAROLE tcp -- anywhere anywhere tcp dpt:10000
ACCEPT udp -- anywhere anywhere udp dpt:domain
DROP icmp -- anywhere anywhere
DROP all -- anywhere anywhere

Chain PUB_OUT (3 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
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