I want to establish a setup at a customer location with enhanced security features, especially Layer2 access lists.
I hoped it would be possible to define access groups with specific ACLs to only allow known MAC addresses access to the network.
Applying these groups to VLANs doesn't seem possible because, if I'm not mistaken, these could only be applied to physical interfaces but this limitation seems acceptable as we are not going to use VMPS and have to configure VLAN changes manually, so we can also change the access group membership manually.
Using 802.1x is not (yet) desirable.
I was hardly looking to find some details according limits, as for example maximum number of access groups, layer2 acls or other limitations which might interfere with my desired setup.
There will be one access group per vlan and each port will get an access group assigned to prevent "untrusted" access to the network (in fact, trusting on mac addresses is not very secure either but nevertheless it's better than nothing)
One known limitation on layer3 (!) ACLs is the subnet mask which has to be the same for all ACLs on a single physical interface but this is not of interest for the described setup.
Perhaps someone has tried something similar and wants to tell about his/her experiences.
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does