Alma Linux / Rocky Linux / Amazon Linux / RHEL

インストール方法や設定内容の記録

Convenient Web tools to Linux Server

Open source Linux is also changing. Even applications that are considered to be the latest version or stable version have a short lifespan.

Qualys. SSL Labs

SSL Labs is a collection of documents, tools and thoughts related to SSL.

MX Super Tools

All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. MX record check / SPF Record lookup check.

PageSpeed

Get your PageSpeed score and use PageSpeed suggestions to make your web site faster through our online tool.

JPCERT/CC

JPCERTコーディネーションセンター(JPCERT/CC)は、インターネットを介して発生する侵入やサービス妨害等のセキュリティインシデントについて、日本国内の報告の受け付け、対応の支援、発生状況の把握、手口の分析、再発防止のための対策の検討や助言などを、技術的な立場から行なっている。

AlmaLinux JP

An Open Source, community owned and governed, forever-free enterprise Linux distribution, focused on long-term stability, providing a robust production-grade platform. AlmaLinux OS is binary compatible with RHEL®.

Cloudflare

Application security & performance
Protect & accelerate mobile / web apps, APIs & websites with WAF, DDoS, CDN, DNS & more.
Network security & performanceProtect & accelerate infrastructure with L3 DDoS protection & FW, interconnects and smart routing.