asked on

Netbios-NS packet capture

I am using Wireshark to capture network traffic from an Windows XP workstation that makes an HTTPS conection to a remote host. In the packet capture I can see Netbios name query broadcasts to the remote host. I was hoping the packet capture would also show me what name the query was being performed against but the packet just shows zeros. Is there a way for me to determine what name was queried?

Capture.PNG

ASKER CERTIFIED SOLUTION

Sommerblink

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

AManoux

ASKER

Thanks Sommerblink.
I agree, I have a feeling there is a DNS issue going on but I don't know where to start troubleshooting without knowing what host name the XP machine is having trouble with. If I can't find out the host name via the Netbios request, how else can I determine it?
Everything is functioning with the HTTPS request to the website and the website page being accessed. It just hangs for 3-5 seconds while the Netbios name lookup occurs and then times out.

AManoux

ASKER

Attaching more of the Wireshark capture for added information
Capture2.PNG

Sommerblink

Sorry for the delay.

Anyway, you can try to simply disable NetBIOS on that network card / network connection (if its VPN or whatnot).

Simply go to the network card / network connection, go to properties, IPv4 properties, then go to the advanced button.

On the WINS tab, place a radio dot next to Disable NetBIOS over TCP/IP.

Let see if this makes your queries go away without breaking anything else.

If it does, then at least you've got some new information.

SOLUTION

AManoux

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

AManoux

ASKER

Solved my own issue