Mac Pro refuses to establish a vpn connection

Hello out there...
I have a 6 month old Mac Pro. Unfortunately this computer refuses to establish a reliable vpn connection to my office. All the other gear I have (powerBook, iPad and iPhone) does it.
The Mac Pro is erratic. Sometimes he connects but then all of a sudden after two or three minutes the vpn connection is beeing closed. The other day it works for hours....
He did so before the system upgrade and does it now after the upgrade to 10.6.8
I am realy desperate to get a solution for that....
All the best
Peter

Hi Kris,
The ASA supports different kinds of VPN, i.e. SSL (aka SVC for Ssl Vpn Client), IPsec or L2TP/IPsec.
For IPsec it suports both IKEv1 and IKEv2 (as of version 8.4).
On the client side,
the legacy Cisco VPN client uses  IPsec with IKEv1.
Anyconnect 2.x uses SSL.
Anyconnect 3.x can use either SSL or IPsec/IKEv2.
So the Cisco clients do not use L2TP, but L2TP functionality is built-in in some OS's, like Windows and Android.
Personally I have not had the opportunity yet to lay my hands on an Android device to try this out, so I hope Michael or the people in the other thread can help you out if you need more details.
As to what's different, that's a short question with a long answer
One important difference between SSL and IPsec is that at some places IPsec may not work because the network provider blocks UDP500, while SSL uses TCP443 which is usually not blocked because it's the standard port for HTTPS.
Another one is that for Anyconnect, you need a license on the ASA (it does include a free license for 2 concurrent users).
Just a few pointers:
And probably Wikipedia is a good place to start reading as well if you want the full picture
hth
Herbert

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