Some of the security problems I found in Korea Univ. seem to be serious in several aspects.. The most noticible one is that many people still don't reconize the danger of remotely login with telnet or rlogin. Someone on the ethernet(LAN) can see your password or passwords in plaintext because LAN doesn't provide the protection of any kind of the traffic right at the moment. So, please don't log into a remote host if you don't have a way to prevent others log into the site you want to protect. And all of things, you don't log into other machine with "root". Someone can pick up the "root" password and as you surely know that someone will loginto your machine. for the moment remidies for this problem in the academic world are limited, because it's hard to restrict the protocols and services used in the academic LAN. I will tell you later how to go around the problem with some public domain softwares. For now, don't even think about loggin with "root" remotely Thanks. Corncerned graduate of Korea Univ.