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Authenticating Wired Macs with Microsoft IAS and 802.1X August 21, 2006

Posted by jpayne in : 802.1X, OS/X, Security , add a comment

Lets say that you don’t really want users to login, just have a valid certificate.  All your Windows boxes do auto-enrollment and get certificates.   This works transparently.
Macs however…  well, lets just say it took a while to realise that the certificate common name should be the UPN, not the username and not the email address.  Now it works just fine :)   Needless to say, this was a problem with the certificate server’s templates, not with the mac itself.

If Microsoft can get it right…. August 2, 2006

Posted by jpayne in : 802.1X, Security , 2 comments

Why can’t Cisco?  3560, small stackable switch:

interface GigabitEthernet0/11
 switchport access vlan 803
 switchport mode access
 switchport voice vlan 801
 load-interval 30
 dot1x port-control auto
 dot1x timeout tx-period 10
 dot1x timeout reauth-period 60
 dot1x guest-vlan 1
 dot1x reauthentication
 spanning-tree portfast
end

6500 wiring closet switch:

switch(config)#int faste 1/22 
switch(config-if)#dot1x port-control auto 
Command rejected: One or more ports configured with voice vlan.
Dot1x can't be enabled on voice vlan configured ports.

So how is one supposed to enable 802.1X and use Cisco’s phones?  Double up on switchports and wall jacks.

Cisco claims IOS support on the 6500 for 802.1X and voice VLANs is coming early 2007.  CatOS is supposed to support it, but that’s a backwards step I’m not sure we want to take…