Port 1251 is primarily used for accessing Kodak Color Management System (CMS) servers. It is also sometimes used for secure socket layer (SSL) connections in web applications.
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 1251 | tcp | servergraph | servergraph | REGISTERED PORT |
| Port 1251 | udp | servergraph | servergraph | REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |