mozilla people planed TLS NSI support . After knowing IE7 would support this, they accelerated they development and implemented in NSS v3.11 (initially they planed this support in NSS v3,12). Check here,
On the server side, apache v2.2 has built-in support for RFC 2817. The third-party module, mod_gnutls, adds RFC 3546 support to both apache v2.0 and apache v2.2. Check here,
mozilla people planed TLS NSI support . After knowing IE7 would support this, they accelerated they development and implemented in NSS v3.11 (initially they planed this support in NSS v3,12). Check here,