My teaching Linux servers for my courses such as cst8207, dat2330, dat2343, net2003, etc., were all shut down when I had to leave teaching in June 2019. (Nobody knew how to keep them running.) The page you are looking for was on one of those servers, and those servers no longer exist.
Go to: Ian! D. Allen – Teaching Home Page (.COM)
Go to: Ian! D. Allen – Teaching Home Page (.ORG)
EMail Ian! D. Allen: email@example.com