The growth of the Internet and its reach into the fabric of business and personal life has outdistanced most organizations' ability to protect the confidentiality and integrity of information. The increased exposure and the constant escalation of threats to network security have increased the need for effective controls that can restore availability, confidentiality, and integrity to information systems. Mission Critical! Internet Security shows how security can be provided in TCP/IP at any layer, and outlines the advantages and disadvantages of each approach. This book will answer the questions you have about Internet Security, including: * If I use protocol switching on my network, what protocol should I use in place of IP? * Should I be placing my VPN gateway at the same level as my firewall? * Can I use IPSec to secure communications with my Win 9x machines? * Are there back doors in PGP? * Would a firewall or other security product interfere with the IDS? * How does SOCKS Proxy differ from WinSock Proxy? * I am setting up my outbound access control lists to specify which traffic I will permit users to use. How do I know which TCP or UDP port a particular application uses?