telnetd
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Description:
TELNET server
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: telnet remote-access server networking legacy
Install: brew install telnetd
About:
Telnetd is a classic TELNET protocol server daemon that enables remote command-line access to a system over a network. It listens for incoming connections on TCP port 23, authenticates users, and spawns a login shell session. While historically significant for network administration, it is now considered insecure due to its lack of encryption.
Key Features:
  • Implements the TELNET protocol for remote terminal access
  • Provides interactive shell sessions over TCP/IP
  • Integrates with standard system authentication mechanisms
  • Lightweight and simple to configure
Use Cases:
  • Legacy system administration on isolated or internal networks
  • Educational purposes for learning about network protocols
  • Accessing command-line interfaces on older hardware or operating systems
Alternatives:
  • OpenSSH – Provides encrypted remote shell access, making it the modern standard and a secure replacement for Telnet.
  • Dropbear – A lightweight SSH server and client, suitable for resource-constrained environments while maintaining security.
Version History
Detected Version Rev Change Commit
Sep 12, 2025 3:34am 0 VERSION_BUMP b1711a39
Sep 12, 2024 11:19pm 0 VERSION_BUMP 2694346c