Thanks for the info - looks like I may want to try this on a 
smaller scale first but your help is very much appreciated!

On Wed, 09 Mar 2011 11:04:47 -0500 Francois Gaudreault 
<[email protected]> wrote:
>Hi,
>
>Are your clients plugged into local manageable switches?  Are they 

>
>supported in PF? I don't know what will be the behavior of the VPN 

>hub, 
>but I'll give you some hints about what we usually do in routed 
>networks.  Are you using VLANs at your locations?
>
>Basically, you'll need to have your PF servers in your central 
>location.  In each remote site, you'll need to create a 
>registration/isolation VLAN with proper subnetting.  In those 
>subnet, 
>PacketFence will act as the DHCP and DNS server.  The DHCP traffic 

>for 
>the registration and isolation will be forwarded to PacketFence 
>using ip 
>helper-address on the first level 3 interface that the traffic 
>hits.  
>Furthermore, if you want to have isolation capabilities, you must 
>forward a copy of the production DHCP as well.
>
>For SNORT and Nessus, I don't see issues there.  As long as your 
>internet traffic goes out at your central location, you'll only 
>need one 
>probe.
>
>We did a lot of routed network deployments, so I don't see why it 
>couldn't work.
>
>Let me know if you need more information.
>> Hi,
>>
>> New to this forum - looking at PF as a possible solution to my 
>NAC
>> needs for a number of remote offices. I have several remote 
>offices
>>
>> that do not have IT staff and the computers are essentially
>> unmanaged. These computers connect through site-to-site VPN 
>tunnels
>>
>> to a central hub that has resources used by the remote offices
>> (email, web proxy, etc). In some cases there are also resources
>> behind the VPN routers at the remote offices that other remote
>> offices have access to (PBX, file servers, etc).
>>
>> DHCP for the office computers is handled locally at each office 
>by
>> the router. Another possible complication is that the central
>> server system is actually a VMware ESXi 4.x hypervisor-based 
>system
>>
>> (one vm is the VPN hub, one is the web proxy, etc).
>>
>> What I would like to happen is if a computer from a remote 
>office
>> (call it site A) connects through the VPN tunnel to the central
>> system (i.e. site B) the connection is intercepted by PF and a
>> registration is required. I would also like the Nessus and Snort-

>
>> type capabilites to be utilized and the registration/isolation
>> VLANs to be on the central system so that any unregistered,
>> unpatched, or mis-behaving systems don't get any farther than 
>the
>> VPN hub.
>>
>> Is this doable and does anyone have any examples on how they 
>have
>> done it?
>>
>> Thanks a bunch...
>>
>-- 
>Francois Gaudreault, ing. jr
>[email protected]  ::  +1.514.447.4918 (x130) ::  
>www.inverse.ca
>Inverse inc. :: Leaders behind SOGo (www.sogo.nu) and PacketFence 
>(www.packetfence.org)
>
>
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