Ubuntu Networking :: Cam Does Not Keep Logs

1) THE SETUP: I have a home set-up with 3 Ubuntu computers, including an HTPC which is always on, plugged into a Verizon FIOS routerI also have a web based cam (TrendNet TV IP422W).The cam has an ethernet jack so it plugs in directly to the router.It has a simple firmware that allows users to log in via HTTP.It is also managed via HTTP.

2)THE PROBLEM: the cam does not keep logs.So I never know who is logged in at any one point. It's not a big deal, but it is annoying.I want to fix that.The router does not keep logs either.I was told I can get a linux based router to replace (or plug in) to the default FIOS router, but I am looking for something simpler and cheaper.

3)THE FAILED SOLUTION: my idea was to set up the Ubuntu HTPC to always forward a given port to the webcam via the LAN. I tried to follow the instruction from URL...as best I could, see below. 6666 is the port that the cam is listening to (the router is set to forward that port to the cam's LAN IP 192.168.1.30). 5555 is the port that I am trying to forward through the HTPC (ubuntu.local or 192.168.1.130 below, and the router is set to forward any 5555 TCP packets to the HTPC at 192.168.1.130).The iptables commands below where run on the HTPC.