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Basic commands
Basic Firewall
Block Facebook
Block SSH brute force attacks
Configure Port Knocking
Create a VPN kill switch
DNS query limiting
Firewall
Firewall Script
Forward ports
Implement a basic firewall
IPv6 Support
Log firewall messages to a separate file
Rate limiting
Save IPTable rules
Share an IP address between clients
Share an IP address between servers
Test the firewall
Troubleshooting iptables
Verify the iptables kernel module is loaded
Verify the iptables package is installed
