http://www.telstra.com.au/info/security.htmlThis outstanding web page is maintained by Telstra Corporation (formerly known as Telecom Australia). It is very useful as a jumping-off point to other web pages and Internet resources related to network security.
http://www.cerias.purdue.edu/CERIAS is the Center for Education and Research in Information Assurance and Security. CERIAS describes itself this way:
The Center for Education and Research in Information Assurance and Security, or CERIAS, is the world's foremost University center for multidisciplinary research and education in areas of information security. Our areas of research include computer, network, and communications security as well as information assurance.
CERIAS provides an excellent collection of security resources. CERIAS has taken over many of the research efforts formerly handled at Purdue by COAST. The COAST FTP archive is still available directly from the CERIAS home page.
http://www.ibiblio.org/mdw/The Linux Documentation Project is an attempt to pull together all the documentation you could ever need for Linux. They describe themselves this way:
The Linux Documentation Project is working on developing free, high quality documentation for the GNU/Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation. This includes the creation of "HOWTOs and Guides". We hope to establish a system of documentation for Linux that will be easy to use and search. This includes the integration of the manual pages, info docs, HOWTOs, and other documents.
http://www.linuxrouter.orgThe Linux Router Project is a specialized version of Linux for networking. The web page describes it this way:
A networking-centric micro-distribution of Linux. LRP is small enough to fit on a single 1.44MB floppy disk, and makes building and maintaining routers, access servers, thin servers, thin clients, network appliances, and typically embedded systems next to trivial.