Ports used by FileMaker Server
Note  The following information is for server administrators.
When running FileMaker Server in an environment that uses a firewall, be sure to configure the firewall on each machine to allow FileMaker Server to communicate. The table below lists all the ports used in a FileMaker Server deployment.
Note  Not all of the ports listed below need to be open to end users or between all machines or end users indicated in the “Used by” column in a FileMaker Server deployment. Ports marked “Available” are used locally on the machine indicated in the “Used by” column; these ports must not be used for anything else but do not need to be opened in a firewall. For information on deploying FileMaker Server, see FileMaker Server Getting Started Guide.
• Ensure that no existing websites on the master or worker machines use port 80 or 443, or be prepared to enter alternative ports. These ports are used by FileMaker Server on both machines. If the FileMaker Server installer detects an existing website using these ports, the installer prompts you to let it disable that website.
• Windows: Make sure the IIS web server is enabled on both the master and worker machines and that no existing websites use ports 80 or 443, or be prepared to enter alternative ports. The FileMaker Server installer creates its own website that uses these ports on each machine.
• OS X: The web server included in OS X does not need to be enabled; if it is enabled, ensure that no existing websites use ports 80 or 443 on the master or worker machines, or be prepared to enter alternative ports. The installer creates a separate web server instance on each machine and enables it for FileMaker Server to use on these ports.
 
Port number
Used by
Open/available
Purpose
80, or alternative port specified during installation
Web server machine, end users
Open
HTTP
80, or alternative port specified during installation
Master machine, end users, and Admin Console users
Open
Progressive downloading of container data to all clients, redirects to port 16000 for Admin Console
443, or alternative port specified during installation
Web server machine, end users
Open
HTTPS
443, or alternative port specified during installation
Master machine, end users
Open
HTTPS: Uploading databases from FileMaker Pro, inserting data in container fields from all clients
1895
Master machine (local only)
Available
FileMaker internal
2399
Master machine, end users
Open
ODBC and JDBC sharing.
Port 2399 only needs to be open to support ODBC and JDBC clients.
5003
Master machine, end users
Open
Hosting databases for FileMaker Pro and FileMaker Go clients
5013
Worker machine
Available
FileMaker internal
5015
Web Publishing Engine machine
Available
FileMaker internal
8998
Web Publishing Engine machine
Available
FileMaker internal
9889
Web Publishing Engine machine
Available
FileMaker internal
9898
Web Publishing Engine machine
Available
FileMaker internal
16000
Master machine, Admin Console users
Open
HTTPS: Admin Console Start Page, Admin Helpers
16000
Worker machine
Open
Admin Helpers
16001
Master machine (local only)
Available
FileMaker internal
16001
Worker machine (local only)
Available
FileMaker internal
16004
Master machine (local only)
Available
FileMaker internal
16020
Web Publishing Engine machine
Available
FileMaker internal
16021
Web Publishing Engine machine
Available
FileMaker internal
50003
Master machine (local only)
Available
FileMaker Server service (Windows) or background process (OS X)
50004
Master machine
Available
FileMaker Script Engine
Related topics 
Network problems
Deploying FileMaker Server