如何创建匿名的Python telnet连接？

I am trying to telnet into a server using Python on Windows XP. I can connect successfully by typing 'telnet HOST PORT' which creates an anonymous connection. But Python's telnetlib.Telnet(HOST, PORT) returns 'Connection refused'. Telnetting in Java also fails. Spelunking shows that Python tries to create an anonymous socket connection. My admin says he doesn't allow anonymous connections. But neither Python nor Java allow authentication parameters to be passed in during socket connection creation (not that I could find). Why does Windows' command-line telnet work when Python and Java both fail? Any advice?I am trying to telnet into a server using Pytho