Cannot ssh from jail

Kim Attree kim.attree at za.verizonbusiness.com
Thu Oct 4 01:45:07 PDT 2007


LI Xin wrote:
> Tom Evans wrote:
>   
>> Hi stable@, jail@ [jail@ plz cc me as I'm not subscribed]
>>
>> I'm having some problems setting up some jails for semi-isolated
>> development (ie, so we can isolate the developers into a jail, give them
>> all the root access they want, and not worry about them blowing up more
>> than their own jail) on 6.2-RELEASE-p5.
>>
>> I have set up a jail, using ezjail, which appeared to work fine. I can
>> start the jail, and use jexec to spawn a shell inside the jail. However,
>> if I then try to ssh from the jail to another box, ssh fails with the
>> error message (with -v):
>>     
>
> I think the problem is that if you jexec into a jail then you don't have
> a TTY at hand, so bad things would happen.  If you login into the jail
> by some ways (e.g. by ssh or telnet or whatever that spawns a TTY for
> you) then it would work I bet.
>
> Cheers,
>   
I had the same problem, setup SSHD in the jail, ssh'ed into that, and
then from there got a TTY and could ssh to anywhere.

Li is right, with jexec you don't get allocated a TTY.

Laters,

Kim


More information about the freebsd-jail mailing list