In message <20020703145057.B16108@snew.com>, Chuck Yerkes writes:
>I'd disagree with that.  telnet became moot when RTM published
>his papers in 85 about sniffing passwords.  rsh/rlogin were
>hacks that filled the gap.

??  rsh/rlogin came with 4.2bsd from Berkeley.  rtm wrote a tech report 
in 1985 on using sequence number attacks against rsh.  Password
-sniffing was obviously possible (I have vague recollections of the 
original Ethernet paper in CACM mentioning the need for encryption), 
but the first widespread instances of it were in 1993.

		--Steve Bellovin, http://www.research.att.com/~smb (me)
		http://www.wilyhacker.com ("Firewalls" book)