Management inteface send packet port 137 to broadcast public IP

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Management inteface send packet port 137 to broadcast public IP

L3 Networker

Hi all,

I monitor traffic on management interface of 3020, I have seen so many packet from management IP to an broadcast IP

Aug 23 14:49:24 192.168.1.15:35889  203.77.255.255:137  UDP
Aug 23 14:49:24 192.168.1.15:52601  203.77.255.255:137  UDP

I try to stop all service on management interface but it is not affect.

Please help me to stop these packet.

Thanks,

1 accepted solution

Accepted Solutions

Thanks for all reply.

I found and fixed the problem.

The reason is PAN auto enable "Microsoft Active Directory" my domain.

ad-detect-enable.png

View solution in original post

4 REPLIES 4

L6 Presenter

Do you have userid setup, that is if your PA-3020 is trying to reach some AD machine?

L5 Sessionator

Do you have user id enabled on public zone.

Here is a doc which explains why you might see alot of traffic to random public ip address with port 137.

https://live.paloaltonetworks.com/docs/DOC-4705

Let us know if this helped you resolve your issue.


Thanks

Numan

L4 Transporter

Have you made this PAN firewall part of an AD domain? UDP port 137 appears to be some NETBIOS traffic and its unlikely that the management port will be spewing that out unless this PA has been included as a domain device.

Thanks for all reply.

I found and fixed the problem.

The reason is PAN auto enable "Microsoft Active Directory" my domain.

ad-detect-enable.png

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