Date: Fri, 14 Nov 2008 19:00:56 -0600 From: Steven Susbauer <stupendoussteve@hotmail.com> To: Lisa Casey <lisa@jellico.com> Cc: freebsd-questions@freebsd.org Subject: Re: Question about entry in auth.log Message-ID: <491E1F48.6070901@hotmail.com> In-Reply-To: <B8B09B39A8884900970CF2434D40F6C4@CaseyHome> References: <B8B09B39A8884900970CF2434D40F6C4@CaseyHome>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig310DB9E97495B752C374E13A Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Lisa Casey wrote: > Hi, >=20 > I run several FreeBSD servers. Today I noticed an entry in the auth.lo= g > on one of them that concerns me. The entry is this: >=20 > Nov 12 15:44:29 mail sshd[30160]: Accepted keyboard-interactive/pam for= > michael from 89.123.165.3 po > rt 55185 ssh2 >=20 > There is a user michael on the system, but whoever was doing this was > not him. >=20 > I am assuming someone tried to break in using a valid username (michael= ) > but with an incorrect password. So I just conducted an experiment to se= e > if I could replicate that log entry using another valid username: mandy= =2E > I ssh'ed into the server, gave mandy as the username with an incorrect > password. The auth.log entry for that attempt is this: >=20 > Nov 14 19:44:54 mail sshd[96194]: Failed password for mandy from > 72.155.127.223 port 51919 ssh2 >=20 > and when I used something called keyboard interactive as the primary > authentication method in my ssh client, I get this: >=20 > sshd[96348]: error: PAM: authentication error for mandy from 72.155.127= =2E223 >=20 > Nothing about Accepted keyboard-interactive/pam. What does Accepted > keyboard-interactive/pam mean? >=20 > Also, in my ssh client, for authentication methods I have a choice of > password, publickey or keyboard interactive. I've always used password,= > and never even noticed that keyboard interactive before. What is that? >=20 > Thanks, >=20 > Lisa Casey >=20 Keyboard-interactive includes when the server sends requests such as "Password:" to which the connector responds by typing their password. This is different from entering the password in your client before connecting. Example: $ ssh steve@thinkpad steve@thinkpad's password: Try doing similar with the correct password and I bet you will see the "Accepted/keyboard-interactive", it may be possible that michael's password is no longer secure. --------------enig310DB9E97495B752C374E13A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkkeH0sACgkQ2i3YYzbDt08I9wCbBTfguxsM5LQ/q6sC9dsyiwiX 3xYAoMi0xELbtiFhBkEcggQKFa44SXpB =Vigt -----END PGP SIGNATURE----- --------------enig310DB9E97495B752C374E13A--
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