This post was edited by Phuoc Huynh on Dec, 2016
This link has instructions for using public map servers.

****Note: You do not use the web address of the mapserver interface, but rather only the index for the mapserver.

Here are the instructions:
//gis.uml.edu/mediawiki/index.php/Using_public_mapservers#Viewing_Lowell_City_GIS_with_AEJEE