Cisco Systems VPN Client Version

How to configure Comodo Firewall to work wit Cisco Systems VPN Client Version under Windows Service Pack 2?

I am able to connect to my VPN gateway, but nothing works except ping to that gateway.
I can neither ping Internet nor my remote location.

Date/Time :2007-01-02 10:45:38Severity :HighReporter :Network MonitorDescription: Blocked by Protocol Analysis (Bad UDP Checksum)Direction: UDP Outgoing Source: Destination: Reason: The packet has an invalid UDP checksum value

OK, it works now I had to turn off:
“Do Protocol Analysis”
“Block fragmented IP Datagrams”
what sucks BTW.