Hello, I don't have Thibor15c installed anymore, but there was a problem with it when I did have it. I had some problems with some ports not being forwarded and so I disabled WinXP's firewall along with the firewall on my Linksys WRT54GS router. Then I went to GRC's Shields Up website to test my ports and GRC reported that some of my ports were stealthed (blocked by a firewall). To test to see if it was my computer or the router, I removed the router from the chain and tested my connection again. This time all of my ports were detected but closed, as it should be. I think Thibor15c is blocking ports even when I tell it not to, as in diabling the firewall. As I don't have Thibor15c installed anymore, can anyone out there run the same tests with Shields Up to confirm? I am trying out a different firmware, and I don't seem to having the same problems.