On Thu, Oct 13, 2016 at 11:39:15AM +0000, Duje Drazin wrote:
> Hi William,
> Sorry, I didn't catch your answer, how to "Check the nodes involved for a 
> firewall/packet filter" 
Assuming this is a linux box then on a worker node of the cluster try
running iptables -L to see if it has an iptables configuration.  

On most machines you want some sort of firewall on the machine but with grid 
so many dynamic ports are listened on that setting one up that both protects  
the machine
and  lets qrsh work is rather complicated.  The normal solution is to just 
disable the 
firewall on any cluster internal network interfaces (usually the only interface 
for an
execution host) and defend only the outward facing network interfaces.


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