Stop today's most vicious Internet attackers-right in their tracks! Your Linux system will be attacked: maybe in minutes, certainly in days. Be ready! Real World Linux Security, Second Edition brings together state-of-the-art solutions and exclusive software for safeguarding any Linux-based system or network and fighting off any intrusion. Top Linux security consultant Bob Toxen has thoroughly revamped this definitive guide to reflect today's most vicious Internet attacks-and arm you with breakthrough resources for protecting yourself! Surprising new IP Tables research every netadmin must know about; New techniques and software for detecting and blocking ARP and Switch attacks; Important enhancements to Linux-based adaptive firewalls; Thoroughly revised coverage of Samba security for Windows clients; 802.11b wireless networks security; How to make the most of Logcheck, Portsentry, and other new monitoring tools; VPN and instant messaging security, GNU Privacy Guard, 2.4 kernel issues, and much more; Includes all-new chapter on physical security; Reviewed by some of the world's leading Linux security experts!