Issue Firewall Problems

[Jonathan]

I have recently migrated to a replacement Plesk Server (Obsidian for Linux) with a new supplier.

I'm having trouble with the Firewall.

The CMS I'm using (Craft CMS) won't let me save entries. But if I turn the Plesk Firewall off and on it can save entries again. But then later it stops working again.

Plesk Obsidian is the same on the old server with the old supplier as it is on the new. The only difference is that I chose Centos OS 8 for the new one.

I don't know how to resolve it other than turning the Plesk Firewall off and on (which isn't a proper solution).

 

[Bitpalast]

The firewall is only relevant for communication with external systems. Could it be possible that your software tries to access a database outside your own server to manage the CMS data?