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Reply to topic   Topic: How-to More than one domain with your SSL

Joined: 15 Oct 2005
Posts: 3071
Location: Hilversum, NL, EU

PostPosted: Mon 24 Jul '06 12:50    Post subject: How-to More than one domain with your SSL Reply with quote

A nice tip I read from Ken Johanson


In the past, several people (including myself) have asked for a way to get Apache to support multiple SSL certs, for servers that host more than one domain. But it turns out that SSL (x509 version 3, specifically), has built-in support for multiple domains per certifcate!!

Just add the following line to your openssl.cnf file, in the [ v3_ca ] section:

subjectAltName = DNS:http://www.test.com,DNS:*.kensystem.com,DNS:*.etc.com

This line adds additional domains that browsers will validate a certificate against. Note the comma-separated-list format ; it allows you to add as many for few as you want. As in the example, you can also use wild card certs.

You need to re-create your certificate after adding that line to openssl.cnf, put the cert into your config/ dir, then restart your server.

I've verified that all modern browsers support this; Mozilla, Firebird, Safari, & IE. Theoretically, older software that uses SSL (email clients, etc) may not have support for this feature. It also does not provide a distinct cert based on IP address (the contemporary ssl binding method), but that's probably not going to be a problem for most of us.


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Joined: 20 Dec 2005
Posts: 77

PostPosted: Sat 27 Jan '07 12:10    Post subject: Reply with quote


does that mean i could host multiple https sites on my home dsl? (withouth client certificate trouble ofcourse)
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Joined: 02 Jan 2008
Posts: 48

PostPosted: Tue 04 Mar '08 7:22    Post subject: selfsigned ssl, multiple virtual host Reply with quote

hi steffen,
the above worked really well with sambar, not showing any warnings etc

with apache i am not able to acomplish this , is there a new work around for self signed ssl

specs 2.2.8...ssl 0.9.8g
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