VPN Concentrator and ISA Server

[mallenson]

I'm looking into an issue using the Cisco VPN client behind a MS Small Business Server with ISA implemented to connect to a VPN 3005.If the client uses transparent tunneling and checks UDP on client, should this work? or are there problems with the way ISA NATs.

What are workarounds? Examples/Samples would be appreciated:)

[sachinraja]

hi mallenson

you can have a look at the following URL:

http://support.microsoft.com/default.aspx?scid=kb;en-us;812076

this will give the ISA server configuration to be done for the vpn client connectivity. On the VPN concentrator, enable NAT-T. IPSEC over UDP (with NAT) should work on your case.

hope this helps.. all the best..

Raj

[mallenson]

Thanks for the URL...

Changing gears a bit: We have debated using client on machines behind the MS SBS ISA server as their are 30 + users does anyone know if a Cisco VPN 3005 can setup a site-to-site VPN with MS SBS running ISA? Samples and caveats???

Thanks