The issue I face is that I am trying to create an ACL that blocks outbound netbios traffic to the WAN. The challenge is that I don't have control over the router that connects to the WAN, however I do have control of the Layer 3 switch that connects to that router. I was wondering if there was a way (e.g via a VACL) where I could block this netbios traffic going out. The biggest issue is that the outbound interface to the router is a switchport (NOT ROUTED). I really dont want to change the configuration (i.e.making it a routed), so I was wondering if it is possible to do with the current configuration. I attached a diagram to show the network setup.
Narayan, thanks so much for your quick response. I had intitally thought about your second approach in putting an ACL on each vlan, however, I think that this would block netbios traffic between VLANs, which is what I am trying to avoid. The goal is to only have it blocked outbound towards the WAN. I will have to research the NBAR and see if that can help.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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