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Do my iptables rules close ports for incoming connections?

Posted: Fri Mar 04, 2022 9:10 am
by reagent
Hi,

When I check my server's public IP, most ports seem to be closed.

It's good, but I can't understand how they're closed...

As far as I can understand iptables rules, everything should be open:

Code: Select all

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     tcp  --  localhost            localhost            tcp dpt:smtp
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
REJECT     all  --  anywhere             127.0.0.0/8          reject-with icmp-port-unreachable
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     all  --  10.0.0.0/24          anywhere            
ACCEPT     udp  --  anywhere             anywhere             udp dpt:2220
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2225
ACCEPT     udp  --  anywhere             anywhere             udp dpt:4344
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:smtp