Web Reports port can be changed, and it does not run on the same port as the server, agents and relays.
This documentation shows how you can change it to 443 in combination with using SSL - but the same can apply without using SSL
http://www-01.ibm.com/support/knowledgecenter/#!/SS63NW_9.2.0/com.ibm.tivoli.tem.doc_9.2/Platform/Web_Reports/c_web_reports_https_registry_set.html?cp=SS63NW_9.2.0%2F1-7-5-6-3
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