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Re: [Condor-users] Condor training

On 12/13/2011 9:31 AM, Poornima Pochana wrote:

- we are currently faced with firewall problems, or more precisely NAT
problems, in our cross-campus test pool. We are exploring flocking as a
potential solution.
* the above firewall problem is not the firewall on the condor host
(collector) but in trying to schedule jobs to compute nodes that are
behind a firewall

If your central manager [collector] and submit machines [schedd] are on the public network aka these machines are not on a NAT, it should be trivially easy to support compute nodes that are sitting on a NAT or behind a firewall. The trick is to turn on CCB (Condor Connection Broker) support in your config file, which typically means just adding two lines into condor_config. See


Unfortunately, CCB does not support standard universe jobs, but vanilla/parallel etc is all good.