Strange thing happened to me. When looked at the "Port forwarding" tab in "Status & Log" folder in the administration, there were three forwarded ports. Destination was both my connected PCs, protocols both UDP and TCP. I don't remember exactly their port numbers, but it was somewhwere around 63000. Port forwarding, port triggering and DMZ was of course disabled.
Those setting stayed there even after restart, they disappeared after settings restoration.
Any idea what was it?
(I'm using torrents, ftp, samba...)