Click to See Complete Forum and Search --> : Re: TCP port 139


kababoom
February 23rd, 2001, 08:23 AM
Hi! does anyone knows what TCP port 139 does it is only activated when clients for MS network is installed what will happen if i close this port

n8dawg
February 23rd, 2001, 09:16 AM
i would think that if you would close the port any other computer would not be able to connect to that pc, the port number isnt important you can use any port as long as the other puters can comunicate throu that port

SuBz
February 23rd, 2001, 04:40 PM
I believe port 139 is for NetBIOS calls. It is something internal like that. It is what a lot of the DoS (Denial Of Service) attacks used.

Gabriel
February 25th, 2001, 05:59 AM
<font face="Verdana, Arial" size="2">Originally posted by SuBz:
I believe port 139 is for NetBIOS calls. It is something internal like that. It is what a lot of the DoS (Denial Of Service) attacks used.</font>
Right
netbios-ssn 139/tcp NETBIOS Session Service
netbios-ssn 139/udp NETBIOS Session Service

goto www.faqs.org (http://www.faqs.org)
search for RFC #1700


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