Dear all,
We are currently setting up a testbed grid (still LCG 2.2, we might
upgrade next month) behind a nat router, consisting out of a ce and some
wn's (and a lcfg).
To make sure a rb can transfer the jobs to our ce, we need to forward
the SITE_GLOBUS_TCP_RANGE which normally is 20000-25000.
Because the router can't handle forwarding of a range of ports, we are
wondering if we could change the default range parameter in site-cfg.h
to a range 20000-20100 without losing functionalities: the nodes of the
site we will submit our jobs on (to our ce) will have the 20000-25000
range but our site will then have the 20000-20100 range.
Has anyone tried this before? Could we change the default value to the
one proposed without experiencing problems?
By the way: how does the ce choose to which port the rb can send its
data: (assuming none of these ports have been taken) randomly, or 20000
for the first transfer, 20001 for the next one,...?
Thanks for any hints,
Jeroen Craens.
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