Linux Network Administrator's Guide

Tony Bautts is an independent security consultant who has worked with Fortune 500 companies in the US and Japan. He has spoken at security-related events for The Information Systems Audit and Control Association (ISACA) and has spoken and chaired events for the MIS Training Institute. Tony is the co-author of Hack Proofing Your Wireless Network, Nokia Network Solutions Handbook, and the Security Certification Handbook and has, additionally, served as technical reviewer for Implementing IPv6 on Cisco IOS by Syngress Publishing. Terry Dawson is an amateur radio operator and long time Linux enthusiast. He is the author of a number of network related HOWTO documents for the Linux Documentation Project, co-author the 2nd edition of O'Reilly's Linux Network Administrators Guide and is an active participant in a number of other Linux projects. Terry has 15 years professional experience in telecommunications and is currently engaged in network management research in the Telstra Research Laboratories. Gregor N. Purdy is a consultant, author, trainer, and lecturer on large-scale decision support system requirements, design, and implementation. He is also the author of various Perl modules and the Perl Shell. He uses CVS to manage his personal projects and those of his clients. He is also a contributor to the Comprehensive Perl Archive Network (CPAN) and to the ongoing development of the new Perl 6 virtual machine, Parrot.

• Preface; 1. Introduction to Networking; History; TCP/IP Networks Linux Networking; Maintaining Your System; 2. Issues of TCP/IP Networking; Networking Interfaces; IP Addresses; The Internet Control Message Protocol; 3. Configuring the Serial Hardware Communications Software for Modem Links; Accessing Serial Devices Using the Configuration Utilities; Serial Devices and the login: Prompt; 4. Configuring TCP/IP Networking; Understanding the /proc Filesystem; 5. Name Service and Configuration; The Resolver Library; How DNS Works; Alternatives to BIND; 6. The Point-to-Point Protocol; PPP on Linux Running pppd; Using Options Files; Using chat to Automate Dialing; IP Configuration Options; Link Control Options; General Security Considerations Authentication with PPP; Debugging Your PPP Setup; More Advanced PPP Configurations; PPPoE Options in Linux; 7. TCP/IP Firewall Methods of Attack; What Is a Firewall?; What Is IP Filtering? Netfilter and iptables; iptables Concepts Setting Up Linux for Firewalling Using iptables The iptables Subcommands Basic iptables Matches A Sample Firewall Configuration References 8. IP Accounting; Configuring the Kernel for IP Accounting Configuring IP Accounting; Using IP Accounting Results Resetting the Counters; Flushing the Rule Set; Passive Collection of Accounting Data; 9. IP Masquerade and Network Address Translation Side Effects and Fringe Benefits; Configuring the Kernel for IP Masquerade Configuring IP Masquerade; Handling Nameserver Lookups More About Network Address Translation; 10. Important Network Features; The inetd Super Server; The tcpd Access Control Facility The xinetd Alternative; The Services and Protocols Files Remote Procedure Call Configuring Remote Login and Execution 11. Administration Issues with Electronic Mail; What Is a Mail Message?; How Is Mail Delivered? Email Addresses How Does Mail Routing Work? Mail Routing on the Internet; 12. sendmail Installing the sendmail Distribution; sendmail Configuration Files sendmail.cf Configuration Language; Creating a sendmail Configuration; sendmail Databases; Testing Your Configuration Running sendmail; Tips and Tricks; More Information 13. Configuring IPv6 Networks The IPv4 Problem and Patchwork Solutions; IPv6 as a Solution; 14. Configuring the Apache Web Server; Apache HTTPD Server-An Introduction; Configuring and Building Apache; Configuration File Options; VirtualHost Configuration Options; Apache and OpenSSL; Troubleshooting 15. IMAP; IMAP-An Introduction; Cyrus IMAP; 16. Samba Samba-An Introduction; 17. OpenLDAP; Understanding LDAP Obtaining OpenLDAP; 18. Wireless Networking; History The Standards; 802.11b Security Concerns Appendix: Example Network: The Virtual Brewery; Index