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Vlan Access-maps

February 22nd, 2008 · No Comments

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So I forgot to put this up yesterday.  Here it is.  I was asked to filter port 139 traffic before it got to a router.  To accomplish this I went to the switch that was connected to the router and did it on the the VLAN.  To test I went to a workstation connected to the switch and telnetted to the router port 139 and watched a separate ACL that I put on the router increment.    After applying this Vlan Access Map on the switch and repeating the test from the workstation the ACL on the router no longer incremented.


! –Start with the ACL to match the port 139 traffic.  (Yes its a permit statement)

access-list 139 permit tcp any any eq 139
!
!
!  –Next write the vlan access-map to match that ACL and drop the traffic.
!
vlan access-map NO139 10
action drop
match ip address 139
vlan access-map NO139 20
action forward

!
!  –No Apply it to the VLAN!
!
vlan filter NO139 vlan-list 37

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Tags: CCIE Security

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