Where can i learn more about general network security measur

[hassen1]

Good books to get include:
Unix System Security: A Guide for Users and System Administrators, by David Curry
Practical Unix Security, by Simson Garfinkel and Gene Spafford
Windows NT Security Guide, by Stephan Sutton.
A source of timely information, including the discovery of new security holes, are the CERT Coordination Center advisories, posted to the newsgroup comp.security.announce, and archived at:

ftp://ftp.cert.org/pub/cert_advisories/

A mailing list devoted specifically to issues of WWW security is maintained by the IETF Web Transaction Security Working Group. To subscribe, send e-mail to www-security-request@nsmx.rutgers.edu. In the body text of the message write:

SUBSCRIBE www-security your_email_address

A series of security FAQs is mainted by Internet Security Systems, Inc. The FAQs can be found at:

http://www.iss.net/sec_info/addsec.html

The main WWW FAQ also contains questions and answers relevant to Web security, such as log file management and sources of server software. The most recent version of this FAQ can be found at:

http://www.boutell.com/faq/