On Sunday, 8 July 2012 02:44:40 UTC+8, William wrote:
>
> On Sat, Jul 7, 2012 at 11:34 AM, Dima Pasechnik <dimp...@gmail.com> 
> wrote: 
> > 
> > 
> > On Sunday, 8 July 2012 02:01:14 UTC+8, William wrote: 
> >> 
> >> On Sat, Jul 7, 2012 at 10:48 AM, Volker Braun <vbraun.n...@gmail.com> 
> >> wrote: 
> >> > On Saturday, July 7, 2012 6:40:48 PM UTC+1, William wrote: 
> >> >> 
> >> >> We were being hit by a DOS + portscan attack from China all morning, 
> >> > 
> >> > 
> >> > You mean baidu.com indexing trac? ;-) 
> >> 
> >> No.  There are details at sagemath-users. 
> > 
> > 
> > perhaps it's time to disable password logins, and use RSA/DSA keys only? 
> > Or even something even more serious? 
>
> Are there any good 2-factor authentication schemes for Linux shell 
> logins these days? 
>
 
I don't know, but we even have professional cryptographers among us. :)

IMHO private/public keypairs are good enough for normal uses, and for 
emergencies,
perhaps, something, say, mobile phone encryptor based, like the one Google 
started offering?



> William 
>
> > Dima 
> > 
> >> 
> >> 
> >>  -- William 
> >> 
> >> > 
> >> > 
> >> > 
> >> > -- 
> >> > -- 
> >> > To post to this group, send an email to sage-devel@googlegroups.com 
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> >> 
> >> 
> >> 
> >> -- 
> >> William Stein 
> >> Professor of Mathematics 
> >> University of Washington 
> >> http://wstein.org 
> > 
> > -- 
> > -- 
> > To post to this group, send an email to sage-devel@googlegroups.com 
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>
>
>
> -- 
> William Stein 
> Professor of Mathematics 
> University of Washington 
> http://wstein.org 
>

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