Why can't I access Gmail with Google Chrome when using the ProxySG in an SSL Forward Proxy deployment?


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Solution

Overview

The problem has been reported to engineering and has been fixed.  For details, including fixed releases, please see SA44.

WORKAROUND:

Google Chrome uses the value configured by Internet Explorer as the default setting.  A possible reason that Gmail cannot be accessed is because TLS v1 support has been disabled on Internet Explorer.

To solve this problem, re-enable the TLS v1 option in IE by going to Tools > Internet Options > Advanced > Settings > Use TLS 1.0 and select the Use TLS 1.0 checkbox.

If re-enabling TLS v1 or upgrading SGOS is not an option, you can bypass interception to www.google.com for transparent deployments or disable protocol detection for explicit deployments.

 

Example for Transparent Proxy:
    <SSL-Intercept>
    url.domain="www.google.com" ssl.forward_proxy(no)

 

Example for Explicit Proxy:
    <Proxy>
    url.domain=www.google.com detect_protocol(no)

 

 

Cause
Resolution
Workaround
Additional Information
Bug Number
InQuira Doc IdFAQ1092
Attachment

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First Published      10/01/2014
Last Modified      02/05/2015
Last Published      02/05/2015
Article Audience
Product      ProxySG
Software      SGOS 5
Topic      Services, SSL / HTTPS
Article Number      000016155
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