Date: Tue, 18 Jun 2019 09:09:19 -0400 From: Robert Simmons <rsimmons0@gmail.com> To: Dan Langille <dan@langille.org> Cc: Victor Sudakov <vas@mpeks.tomsk.su>, freebsd-security@freebsd.org Subject: Re: Untrusted terminals: OPIE vs security/pam_google_authenticator Message-ID: <CA%2BQLa9BxXdqdvceJ%2BxNEOkBh4G1SkHN-DobnmtA=vWP_MHVU0A@mail.gmail.com> In-Reply-To: <DD73534E-084A-44A7-83D1-60661C64A8A4@langille.org> References: <20190618075954.GA30296@admin.sibptus.ru> <CA%2BQLa9AkOwM14nxgXmmiH8TFewaT6HGjq7vzRQ5u4YNFNh-W-w@mail.gmail.com> <DD73534E-084A-44A7-83D1-60661C64A8A4@langille.org>
next in thread | previous in thread | raw e-mail | index | archive | help
You are correct for SSH. On Tue, Jun 18, 2019, 09:07 Dan Langille <dan@langille.org> wrote: > On Jun 18, 2019, at 9:02 AM, Robert Simmons <rsimmons0@gmail.com> wrote: > > On Tue, Jun 18, 2019, 04:01 Victor Sudakov <vas@mpeks.tomsk.su> wrote: > > Dear Colleagues, > > I've used OPIE for many years (and S/Key before that) to login to my > system from untrusted terminals (cafes, libraries etc). > > Now I've read an opinion that OPIE is outdated (and indeed its upstream > distribution is gone) and that pam_google_authenticator would be more > secure: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D237270 > > Is that truly so? With 20 words in OPIE and only 6 digits in > pam_google_authenticator, how strong is pam_google_authenticator against > brute force and other attacks? > > > Victor, > > To throw a new wrinkle in the equation: Google Authenticator codes can be > intercepted by a phishing page. U2F protocol is even better, and can't be > intercepted via phishing. > > There are U2F libraries in ports. > > https://en.wikipedia.org/wiki/Universal_2nd_Factor > > Cheers, > Rob > > > > If my Google Authenticator codes are on my phone, and I'm entering them > into my ssh session, how is a phishing page involved? > > =E2=80=94 > Dan Langille > http://langille.org/ > > > > > >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CA%2BQLa9BxXdqdvceJ%2BxNEOkBh4G1SkHN-DobnmtA=vWP_MHVU0A>