NB: with ssl inspection off Firefox reports connecting using TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA 256 TLS1.2. These occur across all browsers - in Firefox reporting an SSL_ERROR_BAD_MAC_ALERT when attempting to load any of the sites. Since implementation we have had intermittent connectivity issues reported by customers which we have occasionally been able to replicate as they are not happening consistently. No changes were made on the Fortigate configuration. This was locked down (using IISCrypto) to offer appropriate encryption and cipher combinations, including TLS 1.2 (which was not supported on the older machine).
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Unfortunately we had an issue with the server and were forced to quickly implement a Windows 2012 R2 web server to serve the same sites. Up until last week the server was running Windows 2008 SP2 Standard and customers had no issues accessing the site from any of the main browsers (IE, Edge, Chrome, Firefox). We serve a number of SSL websites to external customers from a single web server. I'm looking for a little clarity on this after we've come across an intermittent issue on 5.2.7 with SSL Inspection enabled. I am not sure how your internet is setup, you could try to change the dns server in your computer settings to 8.8.8.8 which is Google's open dns server.(TLS v1.2) intermittent issue with SSL Inspection enabled # search for fallback, doubleclick on the entry and change 3 to 1. # Click '''I'll be careful, I promise!''' to continue to the about:config page. The about:config "''This might void your warranty!''" warning page may appear. # In the ], type '''about:config''' and press '''Enter'''. In order to change your Firefox Configuration please do the following steps : *Note this is not secure: Change the fallback configuration back to 1.0 If you are interested in the details, check out the blog and the new security certificate: This error came up a bit when they changed the security policy in Firefox in the last two versions. If the service has some form of security, the ssl might be the issue. Read this answer in context 👍 5 All Replies (4) I am not sure how your internet is setup, you could try to change the dns server in your computer settings to 8.8.8.8 which is Google's open dns server. search for fallback, doubleclick on the entry and change 3 to 1.Click I'll be careful, I promise! to continue to the about:config page.The about:config " This might void your warranty!" warning page may appear. In the Location bar, type about:config and press Enter.In order to change your Firefox Configuration please do the following steps : Note this is not secure: Change the fallback configuration back to 1.0.Enable SSL to fix the Firefox cannot connect securely error message.
There were two work arounds to narrow down which one it was: If you are interested in the details, check out the blog here and the new security certificate: I understand that it also does work on other browsers, but there may or may not be an issue with the network. Firefox Monitor - Frequently asked questions.Websites don't load - troubleshoot and fix error messages.Server Not Found - Troubleshoot connection problems.Firefox start up page will only load menu bar and any tabs the main page is blank.just upgraded to 3/6/11 on mac and web pages not printing.Can't log-in to sites, can't access some sites at all.
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