The instructions for Hosting Laserfiche Forms 11 In A Perimeter Network (DMZ) state that we need to have port 8738 open between the DMZ and the internal Forms server instance for the lflicensing service.
Our vendor is saying we have it opened through our network Firewalls, but it is still being blocked by something else, such as Windows Firewall or Sophos Antivirus. They said it's blocked that way within their environment too, not just ours, so they suspect there is a known vulnerability on that port that is causing it to be blocked by something other than our firewall.
Our VP of IT wants me to research Laserfiche's use of this port, any known vulnerabilities with the port, and what is blocking it (the Windows Firewall or Sophos Antivirus or something else entirely).
I don't actually know what the lflicensing service is doing. I was wondering if it has to do with user credentials in Forms - I know that currently I can only log in to Forms on the DMZ using a Repository User, not any of our Windows User accounts, which get an error about invalid password.
I can't find any information online regarding known vulnerabilities with port 8738, and I don't know how to determine what is actually blocking the connection.
Unfortunately, network security and routing is not in my wheelhouse, so I'm really uncertain how to actually get any useful information together for our VP of IT.
Does anyone have any information regarding what Forms is specifically doing with that port and the lflicensing service and/or any advice regarding how to troubleshoot this connection between the two servers?