sshguard

Install command: 
brew install sshguard

Protect from brute force attacks against SSH

https://www.sshguard.net/

License: ISC

Formula JSON API: /api/formula/sshguard.json

Formula code: sshguard.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon		 tahoe ✅
sequoia ✅
sonoma ✅
ventura ✅
macOS on
Intel		 sonoma ✅
ventura ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 2.5.1
head ⚡️ HEAD
Add the following lines to /etc/pf.conf to block entries in the sshguard
table (replace $ext_if with your WAN interface):

    table <sshguard> persist
    block in quick on $ext_if proto tcp from <sshguard> to any port 22 label "ssh bruteforce"

Then run sudo pfctl -f /etc/pf.conf to reload the rules.

Analytics:

Installs (30 days)
sshguard 8
Installs on Request (30 days)
sshguard 8
Build Errors (30 days)
sshguard 0
Installs (90 days)
sshguard 44
Installs on Request (90 days)
sshguard 44
Installs (365 days)
sshguard 205
Installs on Request (365 days)
sshguard 205