Excellent Guide at the moment I am reading sams teach yourself TCP/IP in 21 days and I have found this post very helpful I am downloading the website via software for future use anyone looking to learn about TCP/IP in this forum this would be a good place to start thankyou very much for taking the time for the post deanwebb.
http://www.tcpipguide.com/free/t_toc.htm
http://index-of.es/Magazines/hakin9/books/No.Starch.TCP.IP.Guide.Oct.2005.pdf
http://www.tcpipguide.com/free/t_toc.htm
http://index-of.es/Magazines/hakin9/books/No.Starch.TCP.IP.Guide.Oct.2005.pdf