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What port does a MS server listen for UNC file shares?

Posted on 2011-09-09
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Last Modified: 2012-05-12
what tcp port does windows servers listen on for files shares?

for example if the server ip is x.x.x.x and unc for the file path is \\servername\sharename

can i telnet to x.x.x.x port number to see if the server is listening?
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Question by:Dragon0x40
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by:Papertrip
Papertrip earned 250 total points
ID: 36512352
The following ports are associated with file sharing and server message block (SMB) communications:

    Microsoft file sharing SMB: User Datagram Protocol (UDP) ports from 135 through 139 and Transmission Control Protocol (TCP) ports from 135 through 139.
    Direct-hosted SMB traffic without a network basic input/output system (NetBIOS): port 445 (TCP and UDP).


Use TCP/445 for your telnet test imo.
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by:lludden
lludden earned 125 total points
ID: 36512353
The following ports are associated with file sharing and server message block (SMB) communications:

    Microsoft file sharing SMB: User Datagram Protocol (UDP) ports from 135 through 139 and Transmission Control Protocol (TCP) ports from 135 through 139.
    Direct-hosted SMB traffic without a network basic input/output system (NetBIOS): port 445 (TCP and UPD).
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by:Papertrip
ID: 36512358
lludden your google is not as fast as mine!

bwahaha!

<3 googling for points ;)
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BloodRed earned 125 total points
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by:Dragon0x40
ID: 36512487
It is listening on three of the ports but rejected the telnet session on the other three.

Looks like the network is working and maybe a server configuration problem.
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Expert Comment

by:Papertrip
ID: 36512502
You won't get any response via telnet from ports that are only listening for UDP, 445 is the main one you should be concerned with getting something back from.
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