[Samba] NetBIOS Datagram (UDP 138) probe

Erik Anderson eanders at pobox.com
Mon Feb 24 22:59:11 GMT 2003


 
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I have the task of service validation in a service scanning program.

I am having a hard time getting or soliciting any NetBIOS Datagram
(netbios-dgm) response from UDP port 138.

I need to be able to send a data packet to UDP 138 or any UDP/TCP
port and get a NetBIOS Datagram out of UDP 138.

I can only seem to get a broadcast NetBIOS Datagram.  Not sure if it
broadcasts on an interval.  Does UDP Port 138 listen only?  Does it
send a netbios-dgm in response to some event?

If there is a query I can send what it is?  Does anyone have a TCP
Dump of such a packet?

I took apart the Samba source and duplicated the cli_send_mailslot
functionality but still I can not get a response.

Samba group has been sending and decoding NetBIOS data for a while so
I am hoping someone can help.

ThanX in advance

Erik

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