Which of the following are the default ports used by NetBIOS service?
A.
135, 136, 139, 445
B.
134, 135, 136, 137
C.
137, 138, 139, 140
D.
133, 134, 139, 142
Which of the following are the default ports used by NetBIOS service?
Which of the following are the default ports used by NetBIOS service?
C
According to ECSA v8 page 350, NetBios ports are 135-139, 445
A
A (As per Ali and Page 350) 🙂
Not all According to ECSA book is correct. They’ve made mistake too, like us.
As far as I know, they try not to tell the correct answer for us people who are visiting this site to review more or dig dipper and not just relying on ECSA book or any other book from EC-Council. There’s a lot of reliable book and RFC’s to rely on. Hope you don’t get this comment wrong as I’m trying to elaborate it.
C. Port 137, 138, 139 => is the correct answer. However port 140 is EMFIS Data Service. IDK why they have to include port 140 on letter C.
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Application protocol Protocol Ports
NetBIOS Datagram Service UDP 138
NetBIOS Name Resolution UDP 137
NetBIOS Session Service TCP 139
Spource:
https://support.microsoft.com/en-us/kb/832017
https://technet.microsoft.com/en-us/library/cc940063.aspx