Linux Firewalls

As a Linux user, you know that securing your system is important, but you might not have the time, interest, or patience to learn every facet of Linux security. With this book, you don't have to be a security expert to quickly and effectively protect your network from intruders-it provides the help of just such an expert. In addition to guiding you through the basic steps of designing and implementing a packet-filtering firewall, author Bob Ziegler discusses disabling unnecessary services, selecting services to make public, and identifying dangerous local services that need to be protected behind a firewall. He provides information on higher-level forms of access control, common server configuration issues, and system security and integrity monitoring, to detect preliminary probes and unauthorized access attempts before an intrusion occurs.