Originally Posted by anilchowdary
some one please help me how to make proxy server using tcp/ip under linux
No idea how to 'help' you with such a vague question. Do you mean you want to WRITE ONE from scratch? INSTALL one? What kind of proxy? Features? Version/distro of Linux???
You can install Squid easily...there are thousands of how-to guides you can find with a Google search, if you tried to look. You can also easily find proxy server concepts/explanations on Google and Wikipedia. Start there.