I'm new in configuring network using iptables, could you please explain to what does the following command do,
and how to replace it with the new iptables version (I have to port it to a new version, in the old version it works)
here the command and the command result :
$ iptables -t nat -P POSTROUTING DROP
The "nat" table is not intended for filtering, the use of DROP is therefore inhibited.
Try `iptables -h' or 'iptables --help' for more information.