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TOPIC: Port 950

Port 950 14 years 5 months ago #4825

I have a VPN server running Windows 2003. I install ISA 2004 and I see something that I don't understand. From my Local Area Network are sent some packets on port 950. The soure IP address are IP address from workstations. I don't understand why are this packets sent fo this server (is not the default gateway).

Re: Port 950 14 years 5 months ago #4840

Could you please confirm whether this is port 950 TCP or UDP..

also, what response comes back.. is the port open on the server or not ? If it is, you can use netstat -anpA on a *nix box or TCPview ( ) on a winbloze box.

If you still cant figure out what it is.. run nmap with version detection on the port

nmap -sV -p950 <server-ip> -v

make sure you get the latest version of nmap (3.70 at the time of writing this) from

Last case, sniff the traffic going to and from that port

tcpdump -w wierd_stuff -nnXs 1545 port 950

should do the trick..

Sahir Hidayatullah. Staff - Associate Editor & Security Advisor
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