Ah, OK, thanks for clearing that up.

Bill.

On Aug 17, 7:04 pm, William Stein <wst...@gmail.com> wrote:
> On Mon, Aug 17, 2009 at 4:27 AM, Bill Hart<goodwillh...@googlemail.com> wrote:
>
> > It's ubuntu and we can open the port as we have root access (assuming
> > John is talking about the same machine - which I am pretty sure he
> > is).
>
> > How secure is the notebook server these days. Is it still advised to
> > set it up in a chroot jail (see my other post about problems I had
> > doing that).
>
> That was *only* for a public notebook server.  If you're using
> secure=True and accounts=False, so only people with existing accounts
> can us the notebook server, there is no reason to use a chroot.
>
> Moreover, the standard wisdom in security is that it is in fact never
> ever in any case ever a good idea to use a chroot for security
> purposes.  Thus one should never do that for the Sage notebook.  The
> only acceptable thing for a public server is to use a virtual machine
> (say virtualbox or vmware).
>
> William
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