How to block upd port 137 traffic
Udp traffic is not as critical as tcp traffic. Nevertheless, I seem not to be able to block some outgoing udp port 137 traffic (netbios-ns) from my system. My PSF shows a listening state, however no remote address (the executable is indicated as "system"). In my PSF I have a top rule denying any traffic on my port 137 to and from any remote port and address with any application. While this rule stops all the traffic where there is a visible remote address, it does not stop outgoing "system" traffic to unknown adresses.
Which automatic or enabled service may be responsible for that, if at all? Any other hints ?
(Win xp pro sp2, stand alone, cable connection, windows file sharing disabled)
Andy
read more and respond »Posted 5 years ago by Andy prelignat in Networking Firewalls
