====== IP-tables delete rule ======

You may also use the rule's number (--line-numbers):

<code bash>
iptables -L INPUT --line-numbers
</code>

Example output :

<code bash>
Chain INPUT (policy ACCEPT) 
    num  target prot opt source destination
    1    ACCEPT     udp  --  anywhere  anywhere             udp dpt:domain 
    2    ACCEPT     tcp  --  anywhere  anywhere             tcp dpt:domain 
    3    ACCEPT     udp  --  anywhere  anywhere             udp dpt:bootps 
    4    ACCEPT     tcp  --  anywhere  anywhere             tcp dpt:bootps
</code>

So if you would like to delete second rule :

<code bash>
iptables -D INPUT 2
</code>

Then save iptables :
<code bash>
# iptables-save
</code>
or
<code bash>
# service iptables save
</code>