Depends on your definition of 'any' I guess.
Had something interesting happen recently when a customer upgraded their ISP service and the provider replaced the cable modem. They had a static public IP addresses technically nothing should have needed to be changed in the UTM, right?
As soon as they replaced the modem we lost connectivity to the UTM through the public IP address even though everyone on the LAN could get to the Internet without a problem.
We tried many things, turned off all firewall functions in the cable modem, setting it to bridge mode which failed miserably, UTM wouldn't even connect just said Error in the Link column on the status page. Rebooted both devices numerous times but no luck.
Finally we noticed that the public IP address could be pinged and turning that rule on and off verified that the UTM was indeed responding to pings at least.
Keep in mind that the site has two internet connections going into the UTM and both were active and listening on ports 4343, 4443, and 4444, or at least they were before the modem was replaced. This is where the 'Any' part comes in, WebAdmin was set to listen on 'Any' network as was the user portal and SSL VPN. We could access those services through the backup internet connection but not the primary that had the new cable modem.
For some odd reason 'Any' did not include the very same public IP address that had not changed, or at least it appeared that way. In the end the fix appeared to be to remove 'any' from the configuration for WebAdmin, etc., and put it back. Somehow the old 'any' before the modem replacement was not the same as the new 'any' if that is even possible.
This thread was automatically locked due to age.