{"description":"\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306e STARTTLS \u3092\u30c6\u30b9\u30c8\u3057\u3088\u3046\u3068\u601d\u3046\u3068 telnet \u3058\u3083\u3067\u304d\u306a\u3044\u306e\u3067 openssl \u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002HTTPS(443/tcp) \u306f\u3059\u3050\u5206\u304b\u308a\u307e\u3059\u304c SMTP \u306e STARTTLS(25/tcp \u3068\u304b 587/tcp)\u306f\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u3059\u3050\u5fd8\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002 \u305d\u306e\u90fd\u5ea6\u30b0\u30b0\u308c\u3070\u826f\u3044\u306e\u3067\u3059\u304c\u3001\u82b8\u304c\u7121\u3044\u306e\u3067\u81ea\u5206\u3067\u30e1\u30e2\u3063\u3066\u304a\u304d\u307e\u3059\u3002 $ openssl s_client -connect foo.example.jp:25 -starttls smtp CONNECTED(00000003) (snip) New, TLSv1/SSLv3, Cipher is AES2\u2026","height":"190","provider_url":"https://hatena.blog","version":"1.0","image_url":null,"published":"2009-04-09 13:00:24","title":" openssl \u3067 SMTP \u306e STARTTLS \u3092\u8a66\u3059","url":"https://bsdmad.hatenablog.com/entry/20090409/1239249624","blog_title":"BSDmad \u306e\u65e5\u8a18","author_name":"hiro-ueda","blog_url":"https://bsdmad.hatenablog.com/","type":"rich","width":"100%","provider_name":"Hatena Blog","categories":["Security","\u30e1\u30e2"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbsdmad.hatenablog.com%2Fentry%2F20090409%2F1239249624\" title=\" openssl \u3067 SMTP \u306e STARTTLS \u3092\u8a66\u3059 - BSDmad \u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/hiro-ueda/"}