Is there any more documentation how "Extra arguments" can be used in Port Forwarding?
The only information is "to use with extra care".
I would like to exclude a few ports only from a defined span. (I could of course split the span causing several rules)
In the WEB UI Network>Firewall>Port forwarding: the following text is found in the WIKI manual:
||string; Default: " "
||Passes additional arguments to iptables. Use with care!|