I'm trying to force a strict NAT on a Linksys E2500, but I'm unsure how to do that. Normally with my old Linksys router, I would have to do some port forwarding to get an open NAT, however I didn't have to do that with this new one. It still has the option to port forward, DMZ, and all of that. I need to brush up a bit on my routers/networking stuff, so I'm not quite sure what's going on, or what extra thing this new one has that makes it so I don't need to port forward.
EDIT: I am terribly sorry... It seems I was able to figure it out shortly after I posted this. I knew of the term "UPnP", but I'm still unclear of exactly what it is. My only guess would be that it's a list of rules. Well, I found the option to disable it, in the unlikely place under the administration tab. (rather than under security)This has successfully limited my NAT to moderate, which is good enough for what I'm trying to do.
I would be grateful yet, if someone could help me get it to fully strict.