[1] Introducing Universal SSL (2015-02-21 15:12:11 +09:00 版) <https://blog.cloudflare.com/introducing-universal-ssl/>

[2] Free SNI SSL and affordable one-click SSL | CloudFlare | The web performance & security company (2015-02-21 15:15:42 +09:00 版) <https://www.cloudflare.com/ssl>