Setup an access list on the router allowing them to communicate in the first place. If that is the 4500 set it up there.

At home I generally set all switches with a native VLAN of the main LAN and tagged to the guest LAN. I know this is probably not optimal, but I'm wondering how bad it really is? I get that it probably ...

In Cisco LAN switch environments, the native VLAN is typically untagged on 802.1Q trunk ports. This can lead to a security vulnerability in your network environment. It is a best practice to ...

Cisco Access Lists allow businesses to increase system security by defining exactly which devices are allowed to access network resources. Each Access List comprises a series of entries, with each ...