NetBIOS (UDP 137) causing the 'noise' in Syslog PIX

Our PIX logs are loaded to deny reports about udp port 137 vehicles coming from our servers to Win, it makes it difficult sometimes to see the other messages to refuse, we must investigate.

Disabling NetBIOS over TCP/IP on servers is unfortunately not an option for us in this VLAN individual. The infrastructure underlying is a Catalyst 6500 switch and we wonder if there is a way, using its feature set, to filter traffic entering the port of the PIX. We want to block the port UDP/137 so drop packets unwanted before the PIX are same.

We have looked into VACL but aren't aware of their ability, ACL, MAC address, traffic at a lower level. In this interface PIX and servers are in the same VLAN Layer2, we do not have a Layer 3 interface we can use to apply an ACL.

Everybody deals with this issue, any suggestions?

Hello

to make the operation forest op NetBIOS disappear, you have the option to create a list entry access that matches the netbios traffic and disables logging for this entry. At the end of the access list entry simply add "disable the log."

This feature requires OS PIX v6.3.

Kind regards

Tom

Tags: Cisco Security

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