Named Pipes, Port 139 and Port 445

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peterc

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Feb 2, 2004
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57
I have read many places that MS SQL Server using Named Pipes is using port 139 and port 445. But I don't know when port 139 is used instead of port 445 and vice versa?

Are port 139 and port 445 actually duplicates?

I have limited knowledge in NT Networking.
 

peterc

Thread Starter
Joined
Feb 2, 2004
Messages
57
Hi hewee,

The List of Lists in the http://lists.gpick.com is very helpful.

I use the Port Lookup for 139 and 445:

For 139:
Type Keyword Description Trojans
TCP netbios-ssn NETBIOS Session Service Chode, God Message worm, Msinit, Netlog, Network, Qaz, Sadmind, SMB Relay

UDP netbios-ssn NETBIOS Session Service

For 445:
Type Keyword Description Trojans
TCP microsoft-ds Microsoft-DS Lioten, Randon, WORM_DELODER.A, W32/Deloder.A, W32.HLLW.Deloder, Sasser

UDP microsoft-ds Microsoft-DS

I don't know the difference between NETBIOS Session Service and Microsoft-DS.
I still don't know when SQL Server will use port 139 instead of 445 and vice versa.

Thank you for any help.
 
Joined
Oct 26, 2001
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I don't know or understand all the port junk.
I just keep all my setting up high on everything.
Firewall is set high and I have a router that acts as a firewall and from running the test here https://grc.com/x/ne.dll?bh0bkyd2 I come up Stealth.
 
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