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* Which port does ssh_to_job use to make a remote connection to the
 execution point where the job is running? Is it 9618 or the default
 ssh 22?
ÂÂÂÂÂÂ It's port 9618.
* Is there any extra configuration necessary to make sure ssh_to_job
 works beyond the default setup? Particularly if I limit traffic to
 just a few open ports.
ÂÂÂÂÂÂ If you allow inbound port 9618 on your execution points (that is,
the EPs are _not_ using CCB), then no; HTCondor tunnels the traffic over
its own connection.
In order for the various file transfer plugins to work, can I just
have the
relevant ports open on the access point or do I need to make sure the
execution points also have firewalld rules configured for https, ftp, or
what-have-you as well?
ÂÂÂÂÂÂ The file-transfer plug-ins should (generally) only ever want to
make outbound connections, but they will be made from the EPs.
For an single htcondor pool, should one be able to directly ssh to the
central manager or should it be only accessible through an AP?
ÂÂÂÂÂÂ Submitters should not (generally) need to ssh to the central
manager.
-- ToddM
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