The book consists from three parts:

• Part A: Configuration of Microsoft ISA Proxy Server and Linux Squid Proxy Server
• Part B: Evaluation of Some Windows and Linux Intrusion Detection Tools
• Part C: Quick Configuration of Postfix Mail Server to Support Anti Spam and Anti Virus Using Two Methods

I. Part A: Configuration of Microsoft ISA Proxy Server and Linux Squid Proxy Server.
Part A concerns about basic Microsoft ISA server and Linux Squid Server configuration  As a lot of  technicians switch between ISA server and Squid server, I decided to write this paper to present some reference when configuring ISA and Squid. There a lot of issues that not covered, and you can go to the manual of ISA server and Squid server for detailed configuration of ISA and Squid. The paper is composed from two parts
Microsoft ISA server 2004 Configuration
Linux Squid Server Configuration
II. Part B: Evaluation of Some Windows and Linux Intrusion Detection Tools
Part B evaluates some the security tools. Top security tools can be found in http://sectools.org/. Most important vulnerabilities in Windows and Linux can be found in www.sans.org/top20/. The paper covers the installation and configuration of the following security tools:

• LANguard
• Nessus
• Snort
• BASE
• ACID
• Rman
• SnortCenter.
• OSSEC
• Sguil

III. Part C: Quick Configuration of Postfix Mail Server to Support Anti Spam and Anti Virus Using Two Methods
In Part C, I configured the Postfix mail server that support the Anti-Spam and Anti-Virus, using two methods, for sake of evaluation and realizing which method can be considered to be the best,

• Method 1: With Postfix, SpamAssassin, ClamAV and Amavis-new
• Method 2: With Postfix, SpamAssassin, ClamAV and Procmail