45 lines
No EOL
2.2 KiB
Bash
45 lines
No EOL
2.2 KiB
Bash
#!/usr/bin/env bash
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# @file Fail2ban Configuration
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# @brief Applies the system `fail2ban` jail configuration and then restarts the service
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# @description
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# Fail2ban is an SSH security program that temporarily bans IP addresses that could possibly be
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# attempting to gain unauthorized system access. This script applies the "jail" configuration
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# located at `home/private_dot_ssh/fail2ban/` to the system location. It then enables and restarts
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# the `fail2ban` configuration.
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#
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# ## Links
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#
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# * [`fail2ban` configuration folder](https://github.com/megabyte-labs/install.doctor/tree/master/home/private_dot_ssh/fail2ban)
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if command -v fail2ban-client > /dev/null; then
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if [[ ! "$(test -d /proc && grep Microsoft /proc/version > /dev/null)" ]]; then
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if [ -f "$HOME/.ssh/fail2ban/jail.local" ]; then
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### Linux
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FAIL2BAN_CONFIG=/etc/fail2ban
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if [ -d /Applications ] && [ -d /System ]; then
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### macOS
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FAIL2BAN_CONFIG=/usr/local/etc/fail2ban
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fi
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sudo mkdir -p "$FAIL2BAN_CONFIG"
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sudo cp -f "$HOME/.ssh/fail2ban/jail.local" "$FAIL2BAN_CONFIG/jail.local"
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if [ -d "${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban" ] && [ ! -f "${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban/jail.local" ]; then
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logg info "Symlinking $FAIL2BAN_CONFIG/jail.local to ${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban/jail.local"
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ln -s "$FAIL2BAN_CONFIG/jail.local" "${HOMEBREW_PREFIX:-/opt/homebrew}/etc/fail2ban/jail.local"
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fi
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if [ -d /Applications ] && [ -d /System ]; then
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### macOS
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logg info 'Enabling the fail2ban Homebrew service' && brew services restart fail2ban
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else
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### Linux
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logg info 'Enabling the fail2ban service' && sudo systemctl enable fail2ban
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logg info 'Restarting the fail2ban service' && sudo systemctl restart fail2ban
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fi
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else
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logg info "The $HOME/.ssh/fail2ban/jail.local configuration is missing so fail2ban will not be set up"
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fi
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else
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logg info 'The environment is a WSL environment so the fail2ban sshd_config will be skipped'
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fi
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else
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logg info 'The fail2ban-client executable is not available on the system so fail2ban configuration will be skipped'
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fi |