| Developer(s) | Phil Schwartz |
|---|---|
| Stable release | 3.1
/ 16 September 2015 |
| Repository | |
| Written in | Python |
| Operating system | Linux, FreeBSD |
| Type | Security / HIPS |
| License | GPL |
| Website | denyhost |
DenyHosts is a log-based intrusion-prevention security tool for SSH servers written in Python. It is intended to prevent brute-force attacks on SSH servers by monitoring invalid login attempts in the authentication log and blocking the originating IP addresses. DenyHosts is developed by Phil Schwartz, who is also the developer of Kodos Python Regular Expression Debugger.