Is it possible to disable port 443 on indexers? If so how? Is there a CL or is it through the UI?
Hm? Splunk doesn't open port 443 at all unless you configured it to do so in some way. It may listen to ports 9997 (log receiving), 8089 (intra-Splunk-traffic) or 8000 (splunkweb) depending on how you configured it, but 443, no.
Yes. If you do not need splunkweb on the indexer... you can just omit this or set it to 0 or just disable splunkweb.
"splunk disable webserver" and restart.
So we have a setting in our web.conf
httpport = 443
could this be causing it to be open?