I had a user that needs to access our guest wireless network from his Iphone. He told me anywhere he goes, he just gives the IT dept his MAC address and they add it on thier firewall so he can have access...
How do i do that? I have an ASA firewall 5520.
For now, i just gave him the SSID and password for access, but his way sounds more secure.
This is slightly outside of my area of expertise, but I think you will want to look at the MAC-based ACL filters on the AP. See below for some configuration guides that explain the process you'll want to follow.
Here is the configuration guide for the CLI:
Here is the configuration guide for the Web-based config:
The settings you are looking for are under Services>Filters>MAC Address Filters in the Web-based config.
Hope that helps.