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Tech riderRev. 4 Oct 2026

Endlessh

Ch 116.7of 18 Honeypot Software
  1. 1Runs onLinux, self-hosted
  2. 2CostsFree plan
  3. 3Deployment modelself-hosted
  4. 4Decoy scopenetwork
  5. 5Credential luresNo
5 lines stated Written from the maker's own pages: github.com
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The Endlessh homepage

Overview

Endlessh is ranked #11 of 18 in honeypot software on Specifiction. It runs on Linux, Self-hosted. There is a free plan.

Endlessh plans and pricing

All plans
Endlessh Free SSH tarpit · standalone C program · maximum 4096 clients by default github.com · 4 Oct 2026

Compared on honeypot software

Deployment model
self-hostedgithub.com
Decoy scope
networkgithub.com
Credential lures
Nogithub.com

Facts

Purpose
Endlessh slowly sends an endless, random SSH banner to keep SSH clients occupied for hours or days.github.com · 4 Oct 2026
Use case
The project describes placing a real SSH server on another port so unwanted SSH clients get stuck in the tarpit instead.github.com · 4 Oct 2026
Implementation
Endlessh is a standalone, single-threaded C program that uses poll() to handle multiple clients.github.com · 4 Oct 2026
Cryptography
The banner is sent before any cryptographic exchange, so the program does not depend on cryptographic libraries.github.com · 4 Oct 2026
Banner controls
The delay between messages defaults to 10000 milliseconds, and the maximum banner line length defaults to 32 characters.github.com · 4 Oct 2026
Connection limit
The maximum number of clients defaults to 4096, and excess connections wait in the queue.github.com · 4 Oct 2026
Network support
Endlessh supports IPv4 and IPv6, with options to bind to either address family alone.github.com · 4 Oct 2026
Logging
Diagnostics are quiet by default; repeatable verbosity flags enable standard and debug logging, and logs can be sent to syslog.github.com · 4 Oct 2026
Configuration
The configuration file uses syntax similar to OpenSSH and defaults to /etc/endlessh/config.github.com · 4 Oct 2026
Signals
SIGTERM gracefully shuts down the daemon, SIGHUP reloads its configuration, and SIGUSR1 prints connection statistics to the log.github.com · 4 Oct 2026
License
The repository identifies its license as the Unlicense.github.com · 4 Oct 2026
Build platforms
The project documents build adjustments for RHEL 6/CentOS 6, Solaris/illumos, and OpenBSD.github.com · 4 Oct 2026
Integrations
The README describes logging to standard output or syslog and does not list third-party service integrations.github.com · 4 Oct 2026
Support
The repository provides GitHub Issues and Pull Requests for project discussion and contributions.github.com · 4 Oct 2026

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Where it ranks on Specifiction

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Sources