Telnet Protocol
This page provides information on the Telnet Protocol detected by the Netify DPI engine. The protocol operates on TCP port 23, an officially registered port assigned by the IANA.
Protocol Description
Telnet is a text-oriented protocol typically used to connect to remote devices via a command line interface. The protocol is one of the oldest protocols still in use -- it was developed in 1969.
Please see the protocol catalog page for information on other protocols detected by Netify DPI.
Protocol Details
- ID
- 77
- Full Name
- Teletype Network
- Category Tag
- infrastructure
- Category
- Infrastructure
- Introduced
- Version 2.88
Protocol Ports - RFC
- TCP 23
- Telnet
Best Practices
You should not see the Telnet protocol on your network and any activity should be investigated. The secure SSH protocol is a good alternative to Telnet.
Related Protocols
Review the Infrastructure category suite below, or explore the complete protocol catalog.