Port 105 is typically used for Network File System (NFS) services. NFS is a distributed file system protocol that allows a user on a client computer to access files over a network in a similar way to how they would access files on their local hard drive. Port 105 is used to establish an RPC (Remote Procedure Call) connection between the client and the server, allowing the client to access and manipulate files on the server.
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 105 | tcp | csnet-ns | Mailbox Name Nameserver | WELL KNOWN PORT |
| Port 105 | udp | csnet-ns | Mailbox Name Nameserver | WELL KNOWN PORT |
| Port 105 | tcp | cso | CCSO name server | WELL KNOWN PORT |
| Port 105 | udp | cso | CCSO name server | WELL KNOWN PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
| Port | Protocol (TCP/UDP) | Description |