I don't like being this vague but I don't have access to the vpn concentrator. So all I can do is describe the problem from the user perspective.
I work from home in Dunedin and try to connect to the Sydney office with the Cisco AnyConnect client. The problem I've got is that every time I try to connect regardless on which machine I connect with, I'm always assigned the same IP address of 10.20.0.1 which is NOT on the office network of 192.168.27.0.
I've tried this on 3 different laptops, 1 desktop and 2 different virtual machines, all a mix of Windows 7 and XP and get the same result. I've also tried installing the AnyConnect client using different adsl and 3G connections.
Only once have I ever gotten a 192.168.27.0 address after I uninstalled the AnyConnect client and removed the Cisco network adaptor, then re-installed it. But the next time around I got the 10.20.0.1 again and haven't been able to repeat this no matter how many times I uninstall/reinstall.
As a workaround I can successfully use AnyConnect to vpn into one of the offices in North America, the UK or Europe and rely on the WAN links between offices to access my Sydney home server. But needless to say its a painfully slow experience.
I've taken this to the corporate European helpdesk in the past but got the runaround so it was easier and less frustrating to just put up with the slow workaround. But now I've a new laptop and figure its time to give this another shot.
Before I fire it back to the corporate helpdesk though, I'd prefer to give them some direction to travel in so if anyone's got any ideas then I'm all ears :)
*Edit - And if it helps I can also get someone in Sydney to wander into the server room and get the model of the concentrator.