Is it possible for a firewall to block an html POST? I've got an html form in use at a client site(s) and some of the users are claiming that when they click the Submit button "nothing happens"; i.e., they don't get the expected confirmation page, nor do they get any kind of error message. The url is pointing to a server web app and most of the time there is no problem.
The clients are remote and not able to provide me much information as to the details of the failure. At this point I'm just grasping at straws trying to figure out *possible* scenarios that might lead to those symptoms. So, can a firewall do this? Any other ideas?
Thanks in advance, Bill