Port 1123 is not assigned to any specific service or application. It is an unassigned port number in the range of registered ports (1024-49151) that can be used for custom applications or services.
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
| Port | Protocol (TCP/UDP) | Title | Description | Port Type |
| Port 1123 | tcp | murray | Murray | REGISTERED PORT |
| Port 1123 | udp | murray | Murray | REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |