From Summon Community Wiki
OCLC's EZproxy is a "robust middleware solution for remote user authentication" that is compatible with 360 Core.
For a list of Summon customers who use the product, see:
EZproxy appears to be a popular choice of product for Summon customers, with around 90% of sites using both products.
Summon seems to work fine with a barebones EZproxy configuration, e.g.
T Summon U http://XXX.summon.serialssolutions.com/ DJ summon.serialssolutions.com
(where XXX is the subdomain of your Summon instance)
Summon 2.0 makes use of JSON to pull in the results from the Summon API prior to displaying them in the browser. To make EZproxy rewrite links in the JSON responses, include the MIMEfilter directive, e.g.