f2b is lightweight automatic anti-bot turret for your public serivces.
Features:
- written in pure C
- small memory footprint
- minimum dependencies (required: libc, libdl; optional: readline, pcre, redis, ipset)
- fully modular: pluggable sources/filters/backends (you may easy write custom one)
- support for distributed installs (teamwork)
- stateful (can save/restore banned ips on restart)
- adapting to bots (automatically adjust bantime/findtime on rare but steady events from one source)
- can use not only logfiles, but anything that can give malicious ip: accept(), recv(), pubsub event, pipe
- may work as honeypot (emulating open tcp ports)
Docs:
- Installation -- generic installation instructions
- Quickstart -- config file description and configuration notes
Similar software:
License: GPL2+