{"provider_name":"Hatena Blog","type":"rich","title":"openssl\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u5229\u7528\u3057\u3001SSLv3\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b","author_url":"https://blog.hatena.ne.jp/tapira/","image_url":null,"published":"2014-10-24 08:38:17","author_name":"tapira","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftapira.hatenablog.com%2Fentry%2F2014%2F10%2F24%2F083817\" title=\"openssl\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u5229\u7528\u3057\u3001SSLv3\u304c\u7121\u52b9\u5316\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b - \u30ab\u30e1\u30cb\u30c3\u30ad\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","provider_url":"https://hatena.blog","blog_title":"\u30ab\u30e1\u30cb\u30c3\u30ad","blog_url":"https://tapira.hatenablog.com/","url":"https://tapira.hatenablog.com/entry/2014/10/24/083817","categories":["old"],"version":"1.0","width":"100%","description":"\u203bLinux\u74b0\u5883\u3067openssl\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u6e08\u307f\u3067\u3042\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u307e\u3059\u3002 1. SSLv3\u304c\u7121\u52b9\u304b\u78ba\u8a8d openssl s_client -ssl3 -connect \u5bfe\u8c61\u30a2\u30c9\u30ec\u30b9(IP or FQDN):443 \u2192 \u7121\u52b9\u306e\u5834\u5408\u3001 \u300cCONNECTED(XXXXXXXXXXX) XXXXXXXXXXXX\uff1aerror\uff1aXXXXXXXXXXXXXXXXXXXX\u300d \u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u4e8c\u884c\u76ee\u5f53\u305f\u308a\u306b\u300cerror\u300d\u3068\u3067\u307e\u3059\u3002 2. SSLv3\u304c\u7121\u52b9\u304b\u78ba\u8a8d \u300c-ssl3\u300d\u3092\u300c-ssl2\u300d\u306b\u5909\u66f4\u3059\u308b\u3060\u3051\u3002 3. TLSv1\u304c\u6709\u52b9\u5316\u78ba\u8a8d \u300c-ssl3\u300d\u3092\u300c-tls1\u300d\u306b\u5909\u66f4\u3059\u308b\u3060\u3051 openssl s_clie\u2026"}