Ports

ArcGIS Server requires several ports be open to allow communication with machines both externally on the internet and internally on an intranet. The following ports need to be allowed on your firewall:

• HTTP port 6080.
• HTTPS port 6443: If HTTPS is enabled, ArcGIS Server uses port 6443 by default.
• Ports 4000-4002: These ports are used for communication between ArcGIS Servers.
• Internally used ports: Other ports such as 1098, 6006, 6099, and others are used by ArcGIS Server to start processes with each ArcGIS Server machine. These ports do not have to be open for access by other machines.