Chains of Trust
Last updated: Jun 11, 2024 This page describes all of the current and relevant historical Certification Authorities operated by Let’s Encrypt. Note that a CA is most correctly thought of as a key and a name: any given CA may be represented by multiple certificates which all contain the same Subject and Public Key Information. In such cases, we have provided the details of all certificates which re
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badssl.com
badssl.com 🎛Dashboard Dashboard 🎫Certificate expired wrong.host self-signed untrusted-root revoked pinning-test no-common-name no-subject incomplete-chain sha256 sha384 sha512 1000-sans 10000-sans ecc256 ecc384 rsa2048 rsa4096 rsa8192 extended-validation 🎟Client Certificate Certificate Downloads client client-cert-missing 🖼Mixed Content mixed-script very mixed mixed-favicon mixed-form âœï¸HTTP h
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Mozilla SSL Configuration Generator Redirecting to the updated SSL Configuration Generator…
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Let's Encrypt
A nonprofit Certificate Authority providing TLS certificates to 450 million websites. Read all about our nonprofit work this year in our 2023 Annual Report. From our blog Jul 23, 2024 Intent to End OCSP Service Moving to a more privacy-respecting and efficient method of checking certificate revocation. Read more Jun 24, 2024 More Memory Safety for Let’s Encrypt: Deploying ntpd-rs NTP is critical t
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Decrypting TLS Browser Traffic With Wireshark – The Easy Way! | Jim Shaver
UPDATE:I’m in the process of migrating my most popular articles and writing some new posts over at redflagsecurity.net. See the latest version of this post at this link. Intro Most IT people are somewhat familiar with Wireshark. It is a traffic analyzer, that helps you learn how networking works, diagnose problems and much more. One of the problems with the way Wireshark works is that it can’t ea
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SSL ã®ãƒ‘フォーマンスã§ãŠå˜†ãã®è²´å…„ã« - What I’ve found has never been enough@Hatena
SSL アクセラレータã®ä¾¡æ ¼ã«èƒƒã‚’ç—›ã‚ã¦ã„ã‚‹è²´å…„ã€ãã‚ŒãŒè²·ãˆãš SSL ã®ãŸã‚ã ã‘ã«ã‚µãƒ¼ãƒã®å°æ•°ã‚’ニョã‚ニョã‚増やã—ã¦ã„ã‚‹è²´å…„ã€ãã†ã§ãªãã¨ã‚‚ SSL ã®ãƒ‘フォーマンスã§ãŠå˜†ãã®è²´å…„ã®ãŸã‚ã«ã€ã„ã‚ã„ã‚ã¾ã¨ã‚ã¦ã¿ã¾ã—ãŸã‚ˆã€‚ SSLセッションã‚ャッシュã®ã‚¿ã‚¤ãƒ アウトè¨å®šã‚’é•·ãã—よㆠSSL ã®è² è·ã®ã»ã¨ã‚“ã©ã¯ã‚»ãƒƒã‚·ãƒ§ãƒ³ã®ç”Ÿæˆã«ã‚ˆã‚‹ã‚‚ã®ãªã®ã§ã€å½“然ã®ã‚ˆã†ã«ã‚µãƒ¼ãƒå´ã® SSL セッションã‚ャッシュを有効ã«ã—ã¦ãŠã‚‰ã‚Œã‚‹ã¨æ€ã„ã¾ã™ãŒã€ãã®ã‚¿ã‚¤ãƒ アウトã®è¨å®šãŒãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã®ã¾ã¾ã¨ã„ã†æ–¹ãŒå¤šã„ã®ã§ã¯ãªã„ã§ã—ょã†ã‹ã€‚ ãŸã¨ãˆã°Apacheã§ã—ãŸã‚‰ã€è¨å®šã‚µãƒ³ãƒ—ルã®ã¾ã¾ SSLSessionCache shm:/usr/local/apache/logs/ssl_gcache_data(512000) SSLSessionCacheTimeout 300 ã¨ã—ã¦ã„ã‚‹æ–¹ãŒå¤šã„ã®ã§ã¯ãªã„ã§ã—ょã†ã‹ã€‚ å„サーãƒã®ãƒ‡ãƒ•ã‚©
我々ã¯ã©ã®ã‚ˆã†ã«ã—ã¦å®‰å…¨ãªHTTPS通信をæä¾›ã™ã‚Œã°è‰¯ã„ã‹ - Qiita
Modern Ciphersuite: ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES1
Hijacking user sessions with the Heartbleed vulnerability
The Heartbleed issue is actually worse than it might immediately seem (and it seems pretty bad already). In case you’ve been out of the loop, Heartbleed (CVE-2014-0160) is a vulnerability in OpenSSL that allows any remote user to dump some of the contents of the server’s memory. And yes, that’s really bad. The major concern is that a skilled user could craft an exploit that could dump the RSA priv
CVE-2014-0160 OpenSSL Heartbleed 脆弱性ã¾ã¨ã‚ - ã‚ã‚‚ãŠãã°
å¿…è¦ãªæƒ…å ±ã¯ http://heartbleed.com/ ã«ã¾ã¨ã¾ã£ã¦ã„ã‚‹ã®ã§ã™ãŒã€è‹±èªžã ã—é•·ã„ã—ã£ã¦äººã®ãŸã‚ã«æ‰‹çŸã«ã¾ã¨ã‚ã¦ãŠãã¾ã™ã€‚ ã©ã†ã™ã‚Œã°ã„ã„ã®ã‹ OpenSSL 1.0.1〜1.0.1fを使ã£ã¦ã„ãªã‘ã‚Œã°ã‚»ãƒ¼ãƒ• ã‚ã¦ã¯ã¾ã‚‹å ´åˆã«ã¯ã€ä¸€åˆ»ã‚‚æ—©ããƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚¢ãƒƒãƒ—ã—ã¦ã€ã‚µãƒ¼ãƒã”ã¨å†èµ·å‹•(ã‚ã‹ã‚‹ã²ã¨ã¯ã‚µãƒ¼ãƒ“スå˜ä½ã§ã‚‚OKã€ãŸã ã—reloadã§ã¯ã ã‚ãªã“ã¨ã‚‚) SSL証明書ã§ã‚µãƒ¼ãƒã‚’公開ã—ã¦ã„ã‚‹ãªã‚‰ã€ç§˜å¯†éµã‹ã‚‰ä½œã‚Šç›´ã—ã¦è¨¼æ˜Žæ›¸ã‚’å†ç™ºè¡Œã—ã€éŽåŽ»ã®è¨¼æ˜Žæ›¸ã‚’失効ã•ã›ã‚‹(末尾ã«é–¢é€£ãƒªãƒ³ã‚¯ã‚ã‚Š)。 サーãƒã‚’公開ã—ã¦ã„ãªã„å ´åˆã‚‚ã€å¤–部ã¸ã®SSL通信ãŒã‚ã‚Œã°å½±éŸ¿ã‚’å—ã‘ã‚‹ã®ã§ã€è©³ã—ã精査ã™ã‚‹ã€‚ PFS(perfect forward secrecy)を利用ã—ã¦ã„ãªã„å ´åˆã€éŽåŽ»ã®é€šä¿¡å†…容も復å·ã•ã‚Œã‚‹å¯èƒ½æ€§ãŒã‚ã‚‹ãŸã‚ã€è©³ã—ã精査ã™ã‚‹ã€‚ æ¼æ´©ã™ã‚‹æƒ…å ±ã®å…·ä½“例ã¯ã€OpenSSLã®è„†å¼±æ€§ã§æƒ³å®šã•ã‚Œã‚‹ãƒªã‚¹ã‚¯ã¨ã—ã¦
Heartbleed Bug
The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. This weakness allows stealing the information protected, under normal conditions, by the SSL/TLS encryption used to secure the Internet. SSL/TLS provides communication security and privacy over the Internet for applications such as web, email, instant messaging (IM) and some virtual private network
Test your server for Heartbleed (CVE-2014-0160)
If there are problems, head to the FAQ Results are now cached globally for up to 6 hours. Enter a URL or a hostname to test the server for CVE-2014-0160. This test has been discontinued in March 2019. You can use the open-source command line tool or the SSL Labs online test. All good, seems fixed or unaffected! Uh-oh, something went wrong: Check what it means at the FAQ. It might mean that the ser
The Art and Science of SSL Configuration
OWASP APAC 2014 Tokyo Japan
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Provide subjectAltName to openssl directly on the command line
GitHub - titanous/heartbleeder: OpenSSL CVE-2014-0160 Heartbleed vulnerability test
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