Linux Network Security focuses on securing Linux in a networked environment, where the security of the entire network should be considered rather than just isolated machines. Starting with the need for security and understand the problem, the book teaches administrators about packet filtering (firewall) with iptables, hardening services such as Apache, BIND, Sendmail, FTP, and MySQL to prevent attacks, network analysis, encryption, local security, DoS attacks, and rootkits. KEY FEATURES * Provides a complete guide to find, fix, and prevent holes in the Linux network * Teach all the major aspects of securing a small LAN, from routing and topology to the UNIX service configuration, with special emphasis on security against long-distance * Teaches how a Linux firewall can be used to protect desktop systems in a LAN from viruses, spam, and hackers * Includes CD-ROM with a variety of open source software that will allow administrators to implement techniques from the book and began securing their networks immediately On CD! (See Appendix F for further details) SOFTWARE * Includes John the Ripper password cracker, Ettercap, Nmap port scanner, Nessus vulnerability scanner, vulnerability scanner Nikto, LibSafe library stack protection, Tripwire IDS, and Snort 2.2.0 IDS and packet sniffer * LINKS hyperlinks to all URLs mentioned in this book * FIGURES All the images used in this book SYSTEM REQUIREMENTS UNIX / Linux: Linux operating system with a 2.4 or 2.6 (recommended) kernel: RAM 64MB (128MB or more recommended);; Pentium I processor, or equivalent CD-ROM drive; X Windows, optional; 80MB hard disk space; Perl interpreter ; GCC 2.96 or greater; WINDOWS: Windows 98, NT, or greater, Pentium I processor, or equivalent, 128MB RAM, CD-ROM, 80MB free hard disk space, Perl interpreter; C compiler