I have a client that I replaced their Sonicwall firewall with an ASA 5510 with the AIP-SSM 10 module. Their users have the Windows XP firewall running on their computers and it seems to be causing an issue with their connectivity to the internet. If they disable the windows firewall, connect to the internet and then re-enable the windows firewall, they are fine and can continue to surf the internet.
They did not have this problem with their old firewall, so I am wondering why now that with the ASA they are. I told them to just disable the windows firewall since it's not really providing much protection. However, they would like a solution to this issue. I did find that the windows firewall is stateful, so I don't know if that is the issue.
TIA for your help.