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EZproxy v6.5.2 release notes

Release Date: May 2019

 Note: EZproxy v6.5.2 is a maintenance release containing an OpenSSL update and a fix for a bug introduced in v6.5. For additional features introduced in v6.5, please see EZproxy v6.5 release notes.


Operating system requirements

EZproxy v6.5.2 is supported under two different operating systems:

The supported versions of these operating systems along with their minimum hardware requirements can be found at Requirements.

Recommended actions

For this release, we recommend that you review the following checklists and complete the relevant tasks. These checklists identify updates that we have determined as significant for most institutions. We encourage you to review all of the items in the release notes to determine whether there are other items that might require additional action or follow up by your institution.

GDPR Privacy Notice for EZproxy

When using EZproxy with certain authentication methods, EZproxy’s native login pages display. OCLC deploys a default page (login.htm) but always offers customers the opportunity to tailor that for their institution.

As you are no doubt aware, a new set of data regulations in European Union law, the General Data Protection Regulation (GDPR), came into force in May 2018. As part of your GDPR compliance efforts, you may want to include a GDPR privacy notice for your institution on your EZproxy login page and other HTML pages providing login failure and other information. To do so:

EZproxy hosted customers: please send OCLC Support a login.htm page to deploy which includes your privacy notice. The default login.htm page is available in a zip file for download. If you have already submitted a modified login page for your institution, please apply the GDPR privacy notice to that file and send it to us.

EZproxy stand-alone customers: please see our documentation on how to edit EZproxy html pages.

Please contact OCLC Support with any questions.

Administrative actions

These items require immediate action or decisions.


If you are upgrading from an EZproxy version earlier than v6.0, you will need an EZproxy Web Services Key (WSKey). To obtain a WSKey, you will need to have a current, annual subscription. EZproxy moved to the annual subscription model in July 2013, so if you purchased your EZproxy subscription prior to that time, you will need to update.

To purchase an annual subscription, you can request a quote, and you will be provided with a quote and information about how too subscribe. If you are uncertain if your subscription is current, please email

If you have already upgraded to V6.x, your existing WSKey will work with this upgrade.

Review EZproxy and OpenSSL, especially if you are upgrading from a version older than v5.7.44. EZproxy v6.5.2 has many security updates that may make previous configurations in your config.txt file unnecessarily, and you can remove certain directives after installing v6.5.2.


EZproxy now uses OpenSSL 1.0.2r

EZproxy v6.5.2 was built with the most current Long Term Support release of OpenSSL (1.0.2r), which was released on February 26, 2019.

Bug fix

IntrusionAPI and WhitelistIP directives may now be used together

In EZproxy v6.5, a bug was introduced that prevented the IntrusionAPI and WhitelistIP directives from being used together in config.txt on Linux systems. This has been corrected.

Important links

Product website

More product information can be found at:

Support website(s)

Support information for this product and related products can be found at: