closing all and opening specific ports

nakkaya · 02-07-2003, 06:31 PM

can anyone give me the commands to close all the ports and open specific ports on the computer? using iptables

nxny · 02-07-2003, 07:36 PM

What time is it?

Time to read the IPTABLES HOWTO.

Half_Elf · 02-08-2003, 11:03 AM

Do you have an iptables scripts? if yes, just put your rules for port you want to open first
(example: $IPTABLES -A INPUT -s 0/0 --dport http -j ACCEPT)
then at the end of your script add a command like :
( $IPTABLES -A INPUT -s/s -j DROP )

iptables uses the first applicable rules it can find, so if there is no rules about "another port" than this one will be use as default.