> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ja/ports-and-services/http-and-https-80-443/web-certificate-analysis-tools.md).
# Web証明書スキャンツール
openssl、sslyze、sslscan、Nmapのssl-heartbleedチェックを使ったTLS証明書の調査。
### OpenSSL（証明書を確認）:
```bash
openssl s_client -connect website.com:443
```
このコマンドはWebサーバーのSSL証明書を確認します。サーバーの443番ポートに接続し、証明書の有効性、有効期限、暗号化方式などの詳細を表示します。
### Sslyze（SSLセキュリティスキャン）:
---
# Agent Instructions
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## Querying This Documentation
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```
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```
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