NUS Using Others tutorials. About Networking but much useful

IP ADDRESSING TUTORIAL

http://www3.rad.com/networks/2003/ipaddr/1.htm

Networks For Beginners

http://www3.rad.com/networks/1997/nettut/mainmenu.html

see under Lectures: here.

http://www.comp.nus.edu.sg/~ananda/CS3103.htm