Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!beartrk!cjp
From: cjp@beartrk.beartrack.com (CJ Pilzer)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Dial-in security
Summary: Call back not completely safe
Message-ID: <433@beartrk.beartrack.com>
Date: 25 Jul 90 07:05:12 GMT
References: <Jul.16.12.44.28.1990.5909@dimacs.rutgers.edu> <51100001@hpcupt1.HP.COM>
Organization: Bear Track Computer Co., Takoma Park, MD.
Lines: 8


While call back systems are better than open modems, they do have a failing 
in that there are ways to intercept the call back to an unauthorized line.
For obvious reasons, I do not think that it would be desirable to discuss
the technique.  But it has been disclosed in a publication with wide spread
distribution lately.

-- cj