Knowledgebase: Romana > Certificate SSL
SNI technology
Posted by GlobeHosting Inc., Last modified by Zoltan Egresi on 28 Aug 2014 01:36 PM

SNI technology Previous version of TLS, which we had used with all our servers, didn’t recognize HTTPS requests that contained domain name. It only worked correctly only if an IP address was “asked”. Thus it was a requirement to have a dedicated IP for each domain that used a secured connection.

Now, with the cPanel version 11.38 and higher, we are able to use SNI.

Server Name Indication (SNI) is an extension to the TLS protocol that indicates what hostname the client is attempting to connect. This allows a server to present multiple certificates on the same IP address and port number and hence allows multiple secure (HTTPS) websites (or any other service over TLS).

However, unfortunately there are a few issues that might appear:

SNI is incompatible with some old versions of the web browsers.

SNI does not work on :

  • Windows XP + any version Internet Explorer (6,7,8,9) Internet Explorer 6 or earlier
  • Safari on Windows XP
  • BlackBerry Browser
  • Windows Mobile up to 6.5
  • Nokia Browser for Symbian at least on Series60
  • Opera Mobile for Symbian at least on Series60

Web site will still be available via HTTPS, but a certificate mismatch error will appear.

Ways to resolve the issue: Use different browser to access the web site.


If SNI works for you, we will install SSL without ordering a dedicated IP address.

However, if you require a dedicate IP for your cPanel account, please submit a ticket to our Billing department via our helpdesk.


The list of browsers that support SNI:

  • Internet Explorer 7 or later, on Windows Vista or higher
  • Mozilla Firefox 2.0 or later Opera 8.0 (2005) or later (the TLS 1.1 protocol must be enabled)
  • Opera Mobile at least version 10.1 beta on Android Google
  • Chrome (Vista or higher, XP on Chrome 6 or newer, OS X 10.5.7 or higher on Chrome 5.0.342.1 or newer)
  • Safari 3.0 or later (Mac OS X 10.5.6 or higher and Windows Vista or higher)
  • Konqueror/KDE 4.7 or later
  • MobileSafari in Apple iOS 4.0 or later
  • Android default browser on Honeycomb (v3.x) or newer Windows Phone 7
  • MicroB on Maemo
  • Odyssey on MorphO
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