Hello dbuckley77,
Do you have any logs or information that leads you to believe that the firewall is blocking the traffic?
Also do you have any type of filter on your network (wccp ips) or an http inspection enable on the firewall?
You can setup an ASP capture on the ASA and that will gather all the traffic been dropped by the firewall and narrow it by a test IP and see if the firewall is dropping traffic related to that client.
ex cap asp type asp-drop all
show cap asp | i x.x.x.x
Regards,
Jose Orozco.
**remember to remove the capture after you are done. no cap asp.