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troubleshooting Question

iptables explanation

Avatar of jmicorp
jmicorpFlag for United States of America asked on
Linux NetworkingSoftware Firewalls
3 Comments1 Solution656 ViewsLast Modified:
Will someone tell me in a nutshell what these entries mean?

> iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     tcp  --  10.191.192.0/18      anywhere            tcp
ACCEPT     tcp  --  10.12.96.0/24        anywhere            tcp
ACCEPT     tcp  --  64.39.0.0/23         anywhere            tcp
ACCEPT     tcp  --  173.203.5.128/25     anywhere            tcp
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:ftp
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:ssh
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:smtp
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:http
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:https
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:59489
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
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