About this document
Understanding Internet Firewalls and NAT by Caleb Chen is a document available to read on EtoBox.
Internet firewalls implement security policies to control network traffic passing through routers and gateways. Common firewall techniques include packet filtering, network address translation (NAT), and port knocking. Popular open-source firewall software like iptables uses these techniques to filter traffic and provide security for Linux systems.
- Author
- Caleb Chen
- Language
- EN