Cisco Systems VPN Client Version 4.8.01.0300

How to configure Comodo Firewall 2.3.6.81 to work wit Cisco Systems VPN Client Version 4.8.01.0300 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: 10.0.29.153:4500 Destination: 146.145.0.138:4500 Reason: The packet has an invalid UDP checksum value

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