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Home > Success Center > Netflow Traffic Analyzer (NTA) > NTA Application and Service Ports 16384-16403 collision event

NTA Application and Service Ports 16384-16403 collision event

Created by Michael Almadova, last modified by MindTouch on Jun 23, 2016

Views: 9 Votes: 0 Revisions: 3


In default port-app assignment, there is a group of ports ranging from 16384 to 16403 which belong to two applications at the same time - RTP (udp only) and iChat and AOL IM (tcp and udp). The issue occurs when there is UDP traffic of a port/s within the said range.


NTA v3.10 and later versions


When ports in this range are assigned to two applications at the same moment, a port collision event is created. In the application resource, the data is shown as the application with the higher appID (iChat and AOL IM).


Remove duplicate ports assignment. 


Last modified
20:54, 22 Jun 2016