电子书免费下载 Practical Firewalls

Practical Firewalls provides expert knowledge about all of the basic concepts involved in creating and maintaining a firewall. Aimed at beginning to intermediate network administrator, this book presents core information in a manner that the novice network administrator can understand and utilize. The book takes a look at such subjects as firewall design and security policies, VPN and Tunneling, and monitoring and auditing techniques. It provides "real world" methods, problems and solutions of value to the reader.