Re: [Condor-users] Trouble communicating through GCB servers

["Son, Sonny" <sson@xxxxxxxxxx>]

> -----Original Message-----
> From: m_kempenaar@xxxxxxxxx [mailto:m_kempenaar@xxxxxxxxx] 
> Sent: Tuesday, January 30, 2007 12:54 AM
> To: Condor-Users Mail List
> Subject: Re: [Condor-users] Trouble communicating through GCB servers
> 
> Thank you for your advice Sonny, I did have a 
> misunderstanding on the working of GCB.. I've now added a 
> route from both condor systems to the GCB servers in the 
> other networks and changed the GCB server in the condor config files.
> So condor client in network A connects to GCB in network B 
> and vice versa and it works!!

That's good! Please note that Miron and Condor team are very watchful to
the quality and do tons of testing before relealing. This
private-private communication is very basic case that we tested a lot
before sending to users :)

> 
> Only thing I've noticed is that the condor (both manager and 
> client) take on the IP address of the GCB server they 
> communicate through. But that could be because of me not 
> understanding it all to well.

This is very normal behaviour. Condor team may have changed GCB a little
bit to avoid this...

> 
> Many thanks!
> Marcel.
> 
> ----- Oorspronkelijk bericht -----
> Van: "Son, Sonny" <sson@xxxxxxxxxx>
> Datum: maandag, januari 29, 2007 6:59 pm
> Onderwerp: RE: [Condor-users] Trouble communicating through 
> GCB servers
> 
> > Sorry that you didn't get the answer first time when you 
> tried GCB...
> > 
> > It seems that you have a misunderstanding on GCB (unless 
> things have 
> > been changed since I left Condor team). GCB supports 
> > private/firewallednetworks that allow outbound connections 
> but block 
> > inbound connections.
> > NAT may be the best example that GCB can support: private 
> nodes must 
> > be able to initiate TCP connections or UDP sessions to the world.
> > 
> > In your setup, condor machines in network A must be able to talk to 
> > theGCB servers of network A *and B*. Similarily, condor machines in 
> > networkB must be able to talk to the GCB servers of network 
> B *and A*.
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