netbios-ns packets from VPN client

[hamou]

I have a PIX 515 with sw version 6.3.(3)and PDM version 3.0.(3).

When I connect to this firewall with the Cisco VPN client there is a constant stream of netbios-ns packets from the client to the firewall.

If I connect with the Microsoft PPTP client no netbios-ns packets are send.

Can somebody tell me why and how to stop de netbios-ns packets from the Cisco client

[mchin345]

May be you can deny the ports

Source Port: 137 netbios-ns

Destination Port: 137 netbios-ns

in the pix firewall.