Secure Shell
Re: How do I use ProxyCommand to connect to remote host using shared session enabled by ControMaster? Feb 09 2011 10:42AM
Igor Bukanov (igor mir2 org)
For your hosts where you want to connect conditionally over jumphost
your can use a proxy command that points to a shell script like:

ProxyCommand my-proxy-script %h %p

Then the proxy script would contain something like:

if grep -q /etc/resolve; then
#direct cionnection
exec nc $1 $2
exec ssh -T -a jumphost nc $1 $2

Clearly you may need to adjust the check for direct connection. Also
you may add a check that the host is not jumphost to prevent

On 9 February 2011 04:43, Asif Iqbal <vadud3 (at) gmail (dot) com [email concealed]> wrote:
> On Tue, Feb 8, 2011 at 7:15 PM, Igor Bukanov <igor (at) mir2 (dot) org [email concealed]> wrote:
>> On 8 February 2011 21:18, Asif Iqbal <vadud3 (at) gmail (dot) com [email concealed]> wrote:
>>> host from="!.*" won't work.
>> That should be simply
>> host !.*
> That won't work. I need a way to negate the origin domain, not the
> destination domain.
> when I connect my laptop to work network it get a dhcp ip and my
> server joins the domain.
> But when I connect my laptop into home network, I am not into the
> domain
> So I want the proxy command to enable, only when my laptop connects
> from home and not when connects from work
> Not sure if I could draw the scenario without confusion.
> Thanks for the help!
> --
> Asif Iqbal
> PGP Key: 0xE62693C5 KeyServer:
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?

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