iptables Regeln löschen

Regeln mit Zeilennummern auflisten

sudo iptables -L --line-numbers
Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination         

Chain FORWARD (policy DROP)
num  target     prot opt source               destination         
1    DOCKER-USER  all  --  anywhere             anywhere            
2    DOCKER-ISOLATION-STAGE-1  all  --  anywhere             anywhere            
3    ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
4    DOCKER     all  --  anywhere             anywhere            
5    ACCEPT     all  --  anywhere             anywhere            
6    ACCEPT     all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination   

NAT Regeln mit Zeilennummern auflisten

sudo iptables -tnat -L --line-numbers
Chain PREROUTING (policy ACCEPT)
num  target     prot opt source               destination         
1    DOCKER     all  --  anywhere             anywhere             ADDRTYPE match dst-type LOCAL

Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
num  target     prot opt source               destination         
1    DOCKER     all  --  anywhere            !localhost/8          ADDRTYPE match dst-type LOCAL
2    DNAT       tcp  --  anywhere             anywhere             tcp dpt:ldap to:10.185.131.139:443

Chain POSTROUTING (policy ACCEPT)
num  target     prot opt source               destination         
1    MASQUERADE  all  --  172.17.0.0/16        anywhere            
2    MASQUERADE  all  --  anywhere             anywhere            

Die gewünschte Regel löschen (Chain und Zeilennummer angeben)

sudo iptables -D FORWARD 5

Die gewünschte NAT Regel löschen (Chain und Zeilennummer angeben)

sudo iptables -t nat -D POSTROUTING 2