Cisco Cisco Web Security Appliance S360 Troubleshooting Guide

Contributed by Josh Wolfer and Siddharth Rajpathak, Cisco TAC
Engineers.
Jul 25, 2014

Why are we seeing the Security Warning pop−up in IE saying "The current Web page is trying to open a site
on your intranet."?

Environment: Cisco Web Security appliance (WSA) in transparent proxy deployment and authentication is
enabled using the single word, short hostname.

Symptoms: When transparently proxying traffic and using authentication, Internet Explorer prompts with with
following error (as seen in the screenshot)

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:

Security Warning: The current Web page is trying to open a site on your intranet.
Do you want to allow this?

Current Site: www.whatever.com
Intranet site: <WSA hostname>

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