Access - Independent MFA for infrastructure applications

<p><a href="https://developers.cloudflare.com/cloudflare-one/access-controls/applications/non-http/infrastructure-apps/">Access for Infrastructure</a> now supports independent multi-factor authentication (MFA) for SSH connections using YubiKey PIV keys. This adds a hardware-backed second factor to SSH access, ensuring that a compromised device session alone is not sufficient to reach your servers.</p> <p>With per-application and per-policy configuration, you can enforce PIV key authentication for sensitive usernames (for example, <code>root</code>) while applying different requirements for other usernames. You can also set an MFA session duration to control how often users must re-authenticate.</p> <div tabindex="-1" class="heading-wrapper level-h4"><h4 id="enrollment">Enrollment</h4><a class="anchor-link" href="#enrollment"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>Users enroll their YubiKey PIV key through the <a href="https://developers.cloudflare.com/cloudflare-one/access-controls/access-settings/app-launcher/">App Launcher</a>. For enrollment instructions and SSH client setup, refer to <a href="https://developers.cloudflare.com/cloudflare-one/access-controls/access-settings/independent-mfa/#enroll-a-piv-key-for-infrastructure-apps">Enroll a PIV key for infrastructure apps</a>.</p> <div tabindex="-1" class="heading-wrapper level-h4"><h4 id="configuration">Configuration</h4><a class="anchor-link" href="#configuration"><span aria-hidden="true" class="anchor-icon"><svg width="16" height="16" viewBox="0 0 24 24"><path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z"></path></svg></span></a></div> <p>For setup instructions, refer to <a href="https://developers.cloudflare.com/cloudflare-one/access-controls/policies/mfa-requirements/#infrastructure-applications">Enforce MFA for infrastructure applications</a>.</p>