Linux Firewalls. 4th edition

Contents Preface About the Author I: Packet Filtering and Basic Security Measures 1 Preliminary Concepts Underlying Packet-Filtering Firewalls 2 Packet-Filtering Concepts 3 iptabies: The Legacy Linux Firewall Administration Program 4 nftables: The Linux Firewall Administration Program 5 Building and Installing a Standalone Firewall II: Advanced Issues, Multiple Firewalls, and Perimeter Networks 6 Firewall Optimization 7 Packet Forwarding 8 NAT — Network Address Translation 9 Debugging the Firewall Rules 10 Virtual Private Networks III: Beyond iptables and nftables 11 Intrusion Detection and Response 12 Intrusion Detection Tools 13 Network Monitoring and Attack Detection 14 Filesystem Integrity IV: Appendices a Security Resources b Firewall Examples and Support Scripts c Glossary d GNU Free Documentation License Index