QUESTION: does command line ELOG connect differently than ELOG through the browser?
I ask this question for perhaps the A-V SW *is* blocking some port or whatever, and I will need to ask our IT department how to remove such a restriction.
ELOG connects in the same way as the browser, but it is a different program. I have seen some firewalls which explicitly exclude browsers in firewall rules. So it might well be that yours blocks ELOG but not your browser. So give it a try and disable it.