The following ports need to be open on two separate firewalls:
Internet Firewall
Windows Firewall on the Server Hosting the Kaseya Server and/or Database Server
Ensure other systems or services are not using these ports.
TCP and UDP 5721 - inbound and outbound - A single port number specification—5721 by default—sets the ports used for the following:
The Kaseya agents connect inbound to the Kaseya Server on TCP port 5721.
The firewall must allow communications back to the Kaseya agent.
The firewall must allow connections to the Kaseya corporate sites license.kaseya.net and vsaupdate.kaseya.net.
The default 5721 port number may be changed to any other free and available port during or after Kaseya Server installation.
TCP 80 (HTTP) or TCP 443 (HTTPS) - Enables system administrators to connect to Kaseya web pages for remote management.
Changing the Port Used by the VSA from Port 80 - See the Kaseya knowledge base.
If SQL Server is on a Separate System
TCP 1433 and UDP 1434 - If your SQL Server is on a separate system, you may have to open TCP port 1433 and UDP port 1434 on the Kaseya Server and SQL Server machines. Other ports may be required for non-default SQL Server instances.
