Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

TCP connections to port 445

I noticed after I installed SoftPhone, my PC started trying to establish connections to the CallManager server on port 445. According to some documents I read, port 445 has something to do with NetBIOS over IP on Win2k. I noticed that the Unity server establishes connections to port 445 to itself, both the loopback address and the NIC address. The common denominator seems to be the existence of a TSP driver, albeit a different one on each system. Why are these systems doing that?

3 REPLIES
Cisco Employee

Re: TCP connections to port 445

Not knowing the answer myself, I went to Google and typed "tcp port 445" and here is the first hit I got:

http://ntsecurity.nu/papers/port445/

New Member

Re: TCP connections to port 445

I found this same link prior to posting this message but I am wondering what any of this would have to do with IP Telephony, as I would not think it would involve any Windows-based services over the network.

Cisco Employee

Re: TCP connections to port 445

It doesn't. But it's still running Windows 2000 Server. We don't disable Windows file sharing and other related services on our boxes. And in some cases, our products rely upon Windows services like NetBIOS naming, SMB sharing, etc. So that's why they are still showing up.

339
Views
0
Helpful
3
Replies