Take the 2-minute tour ×  Say I add the following iptables
rules:  iptables -A INPUT -p tcp -s localhost --dport 4444 -j
ACCEPT iptables -A INPUT -p tcp --dport 4444 -j DROP  This
allows localhost to access port 4444 then blocks all other IPs
from accessing port 4444...  I now want to undo these previous
iptables commands. What is the easiest way to "undo" that? e.g.
allow all ips to access port 4444 again.  share|improve this
question man iptables is your friend –  Marki Aug 17 '13 at
17:24 add comment  migrated from serverfault.com Aug 19 '13 at
21:51   1 Answer  From iptables --help:  --delete  -D chain
Delete matching rule from chain --delete  -D chain rulenum
Delete rule rulenum (1 = first) from chain  So, just issue:
iptables -D INPUT -p tcp -s localhost --dport 4444 -j ACCEPT
iptables -D INPUT -p tcp --dport 4444 -j DROP  Alternatively,
you can delete by line numbers. First, get the line numbers of
your rules:  iptables -L INPUT -n --line-numbers  Then, delete:
iptables -D INPUT