The tcptrace website has moved from http://jarok.cs.ohiou.edu to its new home at http://www.tcptrace.org . The website has been completely redesigned. You should be able to find what you're looking for using the menu to the left. If you're unable to find what you need, you can still get access to the old-style page at http://irg.cs.ohiou.edu/tcptrace/tcptrace_old/.