ISE with dot1x and Posture deployment in pararrel with certain users

Question

Hi,
We want to deploy ISE in sequencial order, meaning that I will initially have all users authenticate/authorized with dot1x/MAB etc, then only on certain locations or users to have posture condition validation/verification while others not.
Can someone please advise whether this approach is possible, as far I understand, once you have posture policies in place as authorization rule it will hit all the users. This may be possible where you can match the switch or the location as a seperate condition, but if all users are spread/mixed we just need to find a simple way how to do it or whether it is not possible..?

Answer 1

We have modified the attached policy on rule 04 and 05 (from top) and add a new condition Device locationEqual "Switch1".According to this rule any user connected to Switch1 only do the posture and same user PCconnect any other switch (other than switch1), it should do only the dot1x/MAB (rule 1-3). But in our case user PC connect any other switch than switch1, it hit the ISE default policy(not included in this attachement) and also it pop-ups the NAC agent and do the posturing. Questions-why the PC/user is not hitting rule 1-3 and goes to default rule-why the PC/user is doing posture where there's no posture rule hitting.
Hi,
First of all, I would assume you configured the PC for machine or user authentication.
So, when a user connects to the network using other switch but not switch1, it will get 2 hits:
1. Computer authentication - this PC is part of Domain Computers
2. Default rule - because you configured (domain) user authentication for dot1x requests that are received only from switch1!
You haven't specified a rule for domain users alone (with no location condition) and with no posture.
You have to add something like this:
1. dot1x + Domain PC
2. dot1x + Domain User + location + preposture
3. dot1x + Domain User + location + posture compliant
4. dot1x + Domain User (and no posture condition)
To answer your second question, event though you 've excepted a certain user from posture, if NAC Agent is installed, it will popup and it will say that you're compliant, so practically it isn't doing posture
(http://www.cisco.com/en/US/docs/security/ise/1.1/user_guide/ise_pos_pol.html)
Generating a Posture Requirement The run-time services requests for the posture requirement for the  endpoint by looking up at the role to which the user belongs to and the  operating system on the client. If you do not have a policy associated  with the role, then the run-time services communicate to the NAC Agent  with an empty requirement. If you have a policy associated with the  role, then the run-time services run through the posture policies  through one or more requirements associated with the policies and for  each requirement through one or more conditions.
If you want to rollout for posture, you could use exception rules (check the top section of authorization rules) or you could do only posture audit for your rules so that everyone can get network access event though they're not compliant.