NAC Appliance OOB L3

Hi everyone,
"i have a friend" ( :-) )to which i want to deploy the NAC OOB L3.
Why this one? Because he has a central location and a few branches (a few more actually) and these branches are at 2 L3 hops prom the center. More specific, there is a L3 switch as a gateway to the branch LAN users and after that, a router that connects to the center (GRE/IPSec).
The question is, and i did not manage to find or to realise by myself: it is mandatory to use a DHCP server for allocating ip-s to clients? (for all of their states: unauthenticated, authenticated, permited etc).
If not how it should be done?
Second: if is mandatory, should it work only with a centraly deployed DHCP server, or i can use the L3 switch in every branch as a dhcp server?
Thank you for your patiance.

DHCP is required for L3 OOB real-ip gateway since the system will need to get a new address when it is switch to the authorization VLAN and then again after the posture process when it is switched back to its "normal" VLAN.
As for the DHCP server, you can use either a central server, have a local switch provide the addresses or a combination of both.
In our install, the local switch is the DHCP server for the auth VLAN and a local server is used for the access VLAN.
Mike

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NAC applianc OOB dns problem

Hello friends, anybody can help me ?
i have 1 CAS OOB, 3560 and 1 CAM. I have configured vlans, dhcp, etc. when the client are in the auth vlan, he own an ip from the trusted vlan with the vlan mapping configuration, buuuuuuuutttt dns doesn'w work. client web browser doesn't redirect. i can access the login page only writing the cas ip address in hte browser.
i am lost, thanks.

Make sure the ip address of the CAS is mapped to its name in the DNS server so that redirection takes place.

NAC Appliance + OOB Virtual Gateway Trunking issues

I have the following problem. When I connect the CAS eth0 to a trunk port in the core switch it disconnects from the CAM. When the port is in access mode, the CAM can connect to the CAS. The core switch is a 4500 with IOS 12.2(25)EW. What could be the problem?

Hi prananth,
I managed to resolve the issue. It was a HA issue. I had configured "Link failure detect" on the redundant CAS app. Apparently the CAS couldnt reach the pingable IP causing failover to take place many times between the two boxes causing the CAS not to communicate with the CAM.
Kindly help me with the following problem I am now having:
http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Security&topic=General&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1ddf45d4/0#selected_message
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Integrate NAC Appliance with Active Directory

We try to implement on our customer, NAC appliance integrating with Active Directory Single sign on.
The NAC configured with L2 OOB. User first connect to switch and got the authentice Vlan, then the user will be authenticate using their domain account login, if success the user will be mapping to the Vlan assign to them.
The agent SSO installed on Active Directory is running well, and at the CAS also the service SSO started.
Let say i've this situation:
1. User A has been assign to Vlan 15 Employee
2. User A plug to switch and got dummy vlan and will authenticate using Domain account on AD, If succeded than, the port will be bounce, the user running an cisco agent on background
3. Now user A has their on Vlan ID 15
I've created the Authentication server on CAM for the Active Directory, but i've find it's so difficult to config mapping rules between user roles to Active directory. The guidance pdf how to implement NAC i've downloaded from cisco, not mention it how to mapping user roles to Active Directory...
Has any one has been configured mapping rules user roles to Active directory?

So you would create a mapping rule against your lookup server like so.
Say the AD group membership is "Finance"
for ADSSO you would apply the mapping rule to your LOOKUP Server
where the expression is
memberOf contains CN=Finance and apply it to role employee if VLAN 15 is your employee vlan then you would designate vlan 15 in your Employee role under user role configuration
Now you cant test this with ADSSO with the test auth function so what I like to do is create an AD authentication server and test against that as long as you have some form of mapping configured the auth results will return all memberships for the userename you login with so you can get the syntax exactly right.

NAC - L3 OOB

Hi all,
We would like to authenticate users L3 adjacent to the NAC appliance server. The NAC is setup as OOB virtual gateway.
Is that possible, what should be the configuration ?

I defaulted the 3550 switch in the WAN and reconfigured it and it works now. I tried the same procedure for the 2950 switch but no dice. I replaced the 2950 switch with a 3550 that worked.
Can anyone say if there is an issue with teh 2950 switch for L3 OOB? I don't have another 2950 switch to test with.
Sachin

NAC L2 OOB Auth and Access VLAN

I'm new to Cisco NAC appliance.
I wanted to deploy L2 OOB VGM for my wired userd.
I wanted to check whether can I have multple Authentication to Access VLAN mapping.
For example :
Authentication VLAN - 111 Map to Trusted VLAN 311
and
Authentication VLAN - 112 Map to Trusted VLAN 312
Therefore, on the port profile of the switch, I can allocated which are the ports that should be using Authentication VLAN 111 and VLAN 112.
Why I wanted to do this, because I need the users to obtain IP addresses that are associated with the trusted segment, so that I do not have to bounch the switch port or utilise DHCP release/renew from the CCA or web client.

Role-based access VLAN mapping for Windows single sign-on (SSO) users can be achieved with this procedure:
Choose Management > Auth Servers and select Auth Type to Active Directory SSO.
Select Default Role for the role that you want Windows SSO users to be in after they are logged in. For example, in this case it should be vencorp.
Choose User Management > User Roles, select the role (vencorp) and click Edit.
Define the Out of Band User Role VLAN to 5 (or any VLAN that you want the users of this role to be).
Save the role.
Choose Switch Management > Profiles > Port > List and click Edit for the control profile.
Change the Access VLAN to User Role VLAN and click Update.
Login through the PC with SSO. You are now logged in the domain and have role-based VLAN mapping

Installation of Cisco ISE 1.1.4 on Cisco NAC Appliance 3315

Hi,
I am re-imaging the Cisco NAC Appliance 3315 and installing the Cisco ISE 1.1.4...
After finishing the Installation, when i type "SETUP"... It gives me the below Error;
# ERROR: INPUT/OUTPUT ERRORS FOUND DURING THE INSTALLATION! #
# PLEASE REIMAGE THE APPLIANCE OR VM FROM THE INSTALLATION MEDIA. #
Please advise....
I tried to change the Time/Date as per UTC/GMT accordingly... But, i didn't find the RAID in CLI... see the link below
(http://www.cisco.com/en/US/docs/security/ise/1.1.1/installation_guide/ise_app_f-installing_on_NAC-AC.html)
any idea...
Regards,
Mubasher Sultan

Where did you get the recovery media? Did you download from cisco.com?
Please download the image from CCO and ensure the ISE image is valid by checking the MD5 checksum of the downloaded image is matching to CCO image.You will then need to burn this ISO image onto bootable DVD.
Supporting link:
http://www.cisco.com/en/US/docs/security/ise/1.1/installation_guide/ise_ins.html#wp1134146
Jatin Katyal
- Do rate helpful posts -

NAC Appliance and BigFix Automatic remediation

Hi,
I want to integrate NAC appliance with BigFix for automatic remedtiation of windows client. Please provide me document me for same if anyone did in their organization.
Regards,
Amit

Hi,
I want to integrate NAC appliance with BigFix for automatic remedtiation of windows client. Please provide me document me for same if anyone did in their organization.
Regards,
Amit

Is ACS required in NAC appliance.

Hi,
One of our clients have decided to implement NAC. They need to know what the various options are especially the NAC appliance (3310 etc). I read that the appliance is a device like a server which has hard disks, cd roms etc. But the documents dont say much about the configuration of the server , whether ACS is required to be installed on the server etc? Can we do port based 802.1x with the help of this device (like dynamically assigning a host to a particular vlan is OS/anti virus is not update?
Thx in advance.
Sonu

NAC appliance willl work with many authentication methods. NAC Framework requires ACS. Getting back to the NAC appliance.... You can use ACS/RADIUS/LDAP/etc.. to authenitcate the users.
THe Appliance will work with Patch Management (after authentication) to insure that tthe right apoplications and patch levels are met. We work with Altiris/BigFIX/Patch Link/SMS and more.
The great thing about NAC Appliace is that it works for all four major use cases:
1. VPN users
2. WIFI users
3. LAN/wired users
4. GUest/vistors
We can
1. authenticate
2. Posture assess (scan)
3. Quarantine/
4. Remediate
You don't want users to have to learn three different ways to connect to the netowrk.
802.1x is working for WIFI today and for LAN conections we use one user per port so they get the whole pipe. In the future we will support subdivision of a Access Switch port for multiple devices and users.
I hope this helps.

Nac framewwork or nac appliance which is better

hi all can someone just advise which is a better solution the nac appliance or the nac framework.
regards
sushil

Hi Sushil,
If you are taking a poll, please count me in for the appliance over the NAC framework. I've done both and there are more variables in the framework than when you use the appliances. From my experience, the more variables the harder it is to troubleshoot. Your mileage may vary.
I would also add that doing an implementation which employs a Virtual Gateway, Out-of-Band
for wired users, and Central Deployment is the best use of your time and money.
Of course, if you are using NAC for VPN and Wireless users you still need dedicated CAS devices for these require In-band deployments.
Hope this helps.
Paul

Cisco NAC Appliance

Hi
I wanted to know if someone can give me some help on a Cisco NAC appliance.
Honestly i've heard of them but i've never installed or worked on one before and i
have a client who wants to have one installed.So i wanted to know can some here
point me in the right direction as far as installation and configuration. Thanks for
the help in advance and have a great evening.

Hi
Everything you need to get started:
http://www.cisco.com/en/US/products/ps6128/tsd_products_support_series_home.html.
HTH,
Tiago
If this helps you and/or answers your question please mark the question as "answered" and/or rate it, so other users can easily find it.

NAC Appliance design question

I have a customer with a central site and two branch office. Routing is configured on the WAN to connect all three locations. All servers and internet access are on the central site.
Customer wants to install NAC appliance. Do I need a NAC apliance at each location? Or do I just install it at the central location and use that NAC appliance for access control to the two remote sites as well.
Also how does NAC appliance apply access control to users coming into the network via Citrix or Cisco VPN Clients?
Thanks

NAC Appliance (CAM & CAS = Clean Access Manager/Server) can be used in a Layer 3 Out Of Band design. This will provide you with centralized control.
It works by placing all unauthenticated switch ports into a unathentication VLAN. When a switch port goes up/up, the NAC CAS follows a set of rules you have established on the CAM to make decisions about the computer and user. It then will place that switch port into a VLAN 'dynamically' as dictated by the rules. Your switches must support these features (IOS level) and only Cisco products work with the CAM/CAS (well some others might, but it's a short list). When the port goes down/down the CAS senses this and returns the port to the unauthenticated VLAN.
For instance, if a user is a vendor, only requiring Internet access, you will have a VLAN for this purpose on all your switches and routed/trunked to your Internet Point of Presence. The CAS will see the switch port he/she jacks into come up/up. It will query the user and the computer and based upon the rules in the CAM, dynamically assign the wire port to the VLAN from the go-no-where unauthenticated VLAN.
If it were a company user, you could set it to check Anti-virus, levels of service packs, etc. before they were allowed on the network. It could also be set up to allow the person access to only the 'Finance' VLAN (for example) based upon their role in the company. It can do this remotely.
If you were to remediate VPN users, you could not do this in a dynamic, Out of Band fashion. You would need a second CAS (but not CAM) to operate In Band. This would then allow users in one Interface, traverse the CAS on out another interface on the appropriate VLAN. This is because it's impossible to apply multiple rules to a single port shared by multiple users. You would need a means to make decision on what VLAN the users accesses at the concentrator and move them off dynamically at the virtual interface. It's not supported.
Remember, NAC is performed at the switch port level. Citrix users would be regarded as local users. You could perform certain rule checking to allow them only onto your Citrix VLAN.
There is a Cisco Chalk Talk series on the NAC, use the URL below. It will teach you as much as you can absorb on the NAC appliances, how to use them and recommend their purchase to your clients.
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5707/ps8418/ps6128/prod_presentation0900aecd80549168.html

NAC Appliance remediation

We are currently testing the NAC appliance before we roll it into production in an enviroment that does not have a software distribution system. I was just wondering various methods people use to have end users self-remediate their machines when using a file or link requirement with the CAS.
The main requirement is that the CSA agent must be installed on the end users machine. The user can successfully download the CSA agent exe from the CAS. However, the installation requires admin rights, but because our users do not have this the installation fails and the user can not become compliant.
Any suggestions on best practices or methodologies used in a production environment would be greatly appreciated.

Following links may help you
http://www.cisco.com/en/US/products/sw/secursw/ps5057/prod_bulletin0900aecd805baf90.html
http://www.cisco.com/en/US/docs/security/nac/appliance/configuration_guide/412/cam/m_agent.html

L2 or l3 switch with NAC appliance

Hi,
I am planning for deploying NAC appliance in OOBVG mode. For the access layer, L2 switches are selected (2960). If I change the L2 access switches with L3 (3560 or 3750) would this add more manageability to the access layer by NAC?
Regards,
Mladen

Thanks.
The document "Cisco NAC Appliance - Clean Access Manager Installation and Configuration Guide" says:
"In out-of-band Real-IP or NAT gateway deployment, the client IP address has to change when the port is changed from the Auth VLAN to the Access VLAN."
So the clients will have to receive TCP/IP settings via DHCP twice, which I don't think is client satisfactory.
If the NAC is in OOBVG mode, are there any NAC features, which are not supported (IP filtering rules, access policies, and any other traffic handling mechanisms)?
Regards,
Mladen

Does Cisco NAC Appliance deployment require CS-ACS?

I've gone through all the partner training on the Cisco NAC appliance and mgmt station, and CiscoSecure ACS 4.0+ is mentioned just about everywhere in the user verification steps.
If a customer does not have CSACS, or AAA for that matter (say in just a MS Exchange environment), the NAC appliances can still be used, correct?
I'm assuming they can, but that leads to if any functionality/checks would be lost in that case, and if so, what?
Anybody have any ideas on that?
Thanks!

Yes, you could use NAC with the local database for a client demonstration. This is actually my preferred method.
Of course, you would lose the central management functionality which comes with ACS or a hook to Active Directory via KTPass (This command-line tool enables an administrator to configure a non-Windows Server 2003 Kerberos service as a security principal in the Windows Server 2003 Active Directory).
Though by all means deploy NAC, even if you are simply want to demonstrate its functionality. Configure the authentication portion last, after your customer is happy with the demonstrated results.
Hope this helps.

NAC Appliance OOB L3

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