Date: Mon, 29 Jul 2002 11:52:09 +0100 From: Nick Barnes <Nick.Barnes@pobox.com> To: freebsd-stable@FreeBSD.ORG Subject: Re: telnet "SRA secure login" fails intermittently Message-ID: <24197.1027939929@thrush.ravenbrook.com> In-Reply-To: Message from Nick Barnes <Nick.Barnes@pobox.com> of "Mon, 29 Jul 2002 10:21:25 BST." <23864.1027934485@thrush.ravenbrook.com>
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At 2002-07-29 09:21:25+0000, Nick Barnes writes:
> When I telnet into a FreeBSD box, I get this:
>
> $ telnet spong
> Trying 192.168.0.1...
> Connected to spong.my.domain
> Escape character is '^]'.
> Trying SRA secure login:
> User (nb): <user>
> Password: <password>
>
> If I mistype the password, I get this:
>
> [ SRA login failed ]
> User (nb): <user>
> Password: <password>
>
> And so on. Fair enough. But it has seemed to me that I have been
> "mistyping my passwords" much more often since about 4.1: maybe 20% of
> the time, as if somehow telnetd (or SRA, whatever that is) is getting
> the password check wrong intermittently. And If I fail a login the
> first time, it seems harder to pass it the second time (the ~20%
> failure rate goes up to maybe 50%).
>
> Recently I have run some little checks on this. Whenever I'm
> telnetting in from an xterm, if the first login fails, I type my
> password into another X app (so I can visually check it) and paste it
> from ther. Sometimes that login does also fail. So there's something
> wrong somewhere: xterm, telnetd, SRA (?).
Here's an example, directly cut-and-paste from an emacs buffer,
anonymized with search-and-replace. This login succeeds twice and
fails on the third attempt:
$ telnet test.machine
Trying 10.0.0.1...
Connected to test.machine.
Escape character is '^]'.
Trying SRA secure login:
User (nb): testuser
Password: testpasswd
[ SRA accepts you ]
FreeBSD/i386 (test.machine) (ttyp1)
Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.6-RELEASE-p2 (TEST-2002-07-09) #1: Mon Jul 15 13:51:37 GMT 2002
You have mail.
$ ^D Connection closed by foreign host.
$ telnet test.machine
Trying 10.0.0.1...
Connected to test.machine.
Escape character is '^]'.
Trying SRA secure login:
User (nb): testuser
Password: testpasswd
[ SRA accepts you ]
FreeBSD/i386 (test.machine) (ttyp1)
Last login: Mon Jul 29 10:44:08 from 10.0.0.2
Copyright (c) 1980, 1983, 1986, 1988, 1990, 1991, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 4.6-RELEASE-p2 (TEST-2002-07-09) #1: Mon Jul 15 13:51:37 GMT 2002
You have mail.
$ ^D Connection closed by foreign host.
$ telnet test.machine
Trying 193.82.131.17...
Connected to test.machine.
Escape character is '^]'.
Trying SRA secure login:
User (nb): testuser
Password: testpasswd
[ SRA login failed ]
User (nb):
Nick B
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