52 lines
2.2 KiB
Bash
52 lines
2.2 KiB
Bash
#!/usr/bin/env bash
|
|
# @file Fail2ban Configuration
|
|
# @brief Applies the system `fail2ban` jail configuration and then restarts the service
|
|
# @description
|
|
# Fail2ban is an SSH security program that temporarily bans IP addresses that could possibly be
|
|
# attempting to gain unauthorized system access. This script applies the "jail" configuration
|
|
# located at `home/private_dot_ssh/fail2ban/` to the system location. It then enables and restarts
|
|
# the `fail2ban` configuration.
|
|
#
|
|
# ## Links
|
|
#
|
|
# * [`fail2ban` configuration folder](https://github.com/megabyte-labs/install.doctor/tree/master/home/private_dot_ssh/fail2ban)
|
|
|
|
### Notify of script start
|
|
logg info 'Configuring fail2ban'
|
|
|
|
### Restart fail2ban
|
|
function restartFailToBan() {
|
|
if [ -d /Applications ] && [ -d /System ]; then
|
|
### macOS
|
|
logg info 'Enabling the fail2ban Homebrew service'
|
|
brew services restart fail2ban
|
|
else
|
|
# Linux
|
|
logg info 'Enabling the fail2ban service'
|
|
sudo systemctl enable fail2ban
|
|
logg info 'Restarting the fail2ban service'
|
|
sudo systemctl restart fail2ban
|
|
fi
|
|
}
|
|
|
|
### Update the jail.local file if environment is not WSL
|
|
logg info 'Checking if script is being run in WSL environment'
|
|
if [[ ! "$(test -d /proc && grep Microsoft /proc/version > /dev/null)" ]]; then
|
|
if [ -d /etc/fail2ban ]; then
|
|
logg info 'Copying ~/.ssh/fail2ban/jail.local to /etc/fail2ban/jail.local'
|
|
sudo cp -f "$HOME/.ssh/fail2ban/jail.local" /etc/fail2ban/jail.local
|
|
restartFailToBan
|
|
elif [ -d /usr/local/etc/fail2ban ]; then
|
|
logg info 'Copying ~/.ssh/fail2ban/jail.local to /usr/local/etc/fail2ban/jail.local'
|
|
sudo cp -f "$HOME/.ssh/fail2ban/jail.local" /usr/local/etc/fail2ban/jail.local
|
|
restartFailToBan
|
|
elif [ -d "${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban" ]; then
|
|
logg info "Copying ~/.ssh/fail2ban/jail.local to ${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban/jail.local"
|
|
sudo cp -f "$HOME/.ssh/fail2ban/jail.local" "${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban/jail.local"
|
|
restartFailToBan
|
|
else
|
|
logg warn 'The /etc/fail2ban (Linux), the /usr/local/etc/fail2ban, and the ${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban (macOS) folder do not exist'
|
|
fi
|
|
else
|
|
logg info 'Skipping sshd_config application since environment is WSL'
|
|
fi
|