I'm creating port forwarding rules on my DD-WRT router (shown below) and want to allow all (any) source networks access. My thought was to specify 0.0.0.0/32 but that is not working. How do I specify this?
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I had the exact same question when using the dd-wrt.v24-18946_NEWD-2_K2.6_mega-nv60k firmware on my linksys e3000. For some odd reason using the same port forwarding settings I've used in previous dd-wrt builds did not result in appropriate port forwarding (i.e. nmap always showed my router's external port 80 as filtered). I thought it was likely due to the new source_net field. I was wrong. No combination of subnet settings fixed the problem. I finally fixed things by upgrading my firmware using the ddwrt database as opposed to brainslayer's svn site (the database ended up being more current). I'm currently running dd-wrt.v24-21061_NEWD-2_K2.6_mega-nv60k and port forwarding works without any entry in the source_net field.