[Concept] Stateful Packet Inspection

Vedio

SPI @31:35

• Firewalls and Stateful Packet Inspection (ITS335, Lecture 19, 2013)
• Firewalls and Stateful Packet Inspection (CSS322, Lecture 19, 2013)

Simple SPI

• Stateful packet inspection

SPI tools

• IPFire An Open Source Firewall Distribution

SPI concept

• SPI防火牆
• Iptables Stateful Firewall and NAT Routing
• Stateful vs Deep Packet Inspection
• Firewall: Stateful Packet Inspection

Iptables Rule

• iptables(8) - Linux man page

Explain

• iptables -A INPUT -m conntrack –ctstate RELATED,ESTABLISHED -j ACCEPT