https://tech.ldas.jp/en/tags/zero-trust/Recent content in zero-trust on Digital Archive Systems Tech BlogHugoenTue, 07 Apr 2026 11:00:00 +0900https://tech.ldas.jp/en/posts/cloudflare-zero-trust-ssh/Tue, 07 Apr 2026 11:00:00 +0900https://tech.ldas.jp/en/posts/cloudflare-zero-trust-ssh/<h1 id="securing-ssh-with-cloudflare-zero-trust">Securing SSH with Cloudflare Zero Trust</h1> <h2 id="background">Background</h2> <p>To access a server via SSH, you typically need to expose port 22 to the internet. However, an open SSH port is a constant target for attacks.</p> <p>With Cloudflare Zero Trust, you can build an environment where only authenticated users can connect via SSH, <strong>while keeping the SSH port completely closed</strong>.</p> <h2 id="what-is-zero-trust">What Is Zero Trust?</h2> <p>Traditional security models relied on the assumption that &ldquo;anything inside the corporate network is trusted.&rdquo; Zero Trust discards this assumption and instead <strong>verifies every access request</strong>.</p>