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detail protocol/port info for a MS client conecting to a MS PPTP VPN server

Posted on 2004-04-01
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Last Modified: 2011-09-20
¿is there any other ports needed to conect to a PPTP server?  I currently have the same problems. But I have open TCP 1723 and GRE both in and out. I did a basic port monitoring and detect activity on tcp ports such as 3054,3055,3214 when trying to connect to the remote server
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Question by:patopurifik
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geoffryn earned 125 total points
ID: 10733523
There may be activity on thse ports, but it is not caused by PPTP.  TCP 1723 and GRE are the only things required.
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by:patopurifik
ID: 10733759
I have refined my monitoring to only packets to/from the pptp server ip.
Incoming traffic comes from tcp 1723 to tcp 2121 and viceversa
Outgoing traffic goes from tcp 2121 to tcp 1723

tcp 2121 is suposeto be a "scientia-ssdb" port.
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by:geoffryn
ID: 10734271
The source port of the control connection to 1723 will be from an incremented high port >1023 to 64K.  If you monitor 10 different connections,one at a time, the source port will move around.
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