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- Newsgroups: comp.unix.questions
- Path: sparky!uunet!spool.mu.edu!umn.edu!csus.edu!netcom.com!teddybur
- From: teddybur@netcom.com (John Sanger)
- Subject: Re: Breaking into Unix via modem
- Message-ID: <1993Jan1.120845.21400@netcom.com>
- Organization: Netcom Online Communications Services (408-241-9760 login: guest)
- References: <1992Dec30.025955.8707@candle.uucp> <1992Dec31.221739.10281@unislc.uucp>
- Date: Fri, 1 Jan 1993 12:08:45 GMT
- Lines: 28
-
- In article <1992Dec31.221739.10281@unislc.uucp> dold@unislc.uucp (Clarence Dold) writes:
- >From article <1992Dec30.025955.8707@candle.uucp>, by root@candle.uucp (Bruce Momjian):
- >
- >> : Someone just told me that there is a way to break into a Unix box by
- >> : dialing the modem, but not getting a login prompt, and somehow getting
- >> : to Unix.
- >
- >If the modem is not properly configured to drop Carrier Detect when the
- >phone line is disconnected, this could be possible.
- >Log in to the suspect system, then disconnect the phone line to the modem.
- >Dial back into the system. If it is properly configured, you will get a new
- >login prompt. If it is not properly configured, you will be returned to the
- >previous login session, still running.
- >
- >---
- But your illustration is a badly administered system. The premise of the
- original implies that one could break into ALL UNIX systems doing as the
- original post described. This is just not the case as you have illustrated
- by your case of a poorly installed modem.
-
-
-
- Ciao!
- John S. :^)
- teddybur@netcom.com
- __
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