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Tag: authentication

Server

9 Best Free and Open Source Linux Network Authentication Servers

November 2, 2026 Steve Emms Internet, Roundup, Security, System Software

Remote Authentication Dial In User Service (RADIUS) is a networking protocol that offers centralized connection authentication, authorization, and accounting management for various types of network access.

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Security

Conjur – secrets management and machine identity platform

October 26, 2026 Steve Emms Security

Conjur manages application credentials, authenticates machines, enforces access policies, and protects secrets across infrastructure.

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Security

jwt_tool – JSON Web Token security testing toolkit

October 13, 2026 Steve Emms CLI, Security

jwt_tool audits JSON Web Tokens, tests signature weaknesses, fuzzes token claims and checks authentication flaws in web applications.

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Google Alternatives

Best Free and Open Source Alternatives to Google Authenticator

September 20, 2026 Steve Emms Security

Discover the best free and open source alternatives to Google Authenticator for secure two-factor authentication and OTP codes.

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FreeOTP – open source two-factor authenticator

September 20, 2026 Steve Emms Android

FreeOTP is an open source Android authenticator supporting HOTP and TOTP, QR scanning, encrypted backups and device authentication.

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FreeOTP+ – feature-rich two-factor authenticator for Android

September 20, 2026 Steve Emms Android, Security

FreeOTP+ is an Android authenticator supporting HOTP/TOTP, QR scanning, backups, biometrics, search, categories and offline icons.

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Best Free and Open Source Alternatives to Microsoft

Best Free and Open Source Alternatives to Microsoft Entra ID

September 10, 2026 Steve Emms Office

Best free and open source alternatives to Microsoft Entra ID for identity management, SSO, authentication, access control and federation.

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Security

5 Best Free and Open Source Linux MAC/RBAC Tools

July 12, 2026 Steve Emms Internet, Roundup, System Software

Harden a computer system or network using access controls such as Mandatory Access Control (MAC) or Role-Based Access Control (RBAC).

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Intrusion Prevention - SSH

privacyIDEA – multifactor authentication platform

July 3, 2026 Steve Emms Security

privacyIDEA adds multifactor authentication to VPNs, networks and applications using flexible tokens, authentication policies and APIs.

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Coding

PY4WEB – database-driven web application framework

June 11, 2026 Steve Emms Programming

PY4WEB is a web framework for database-backed applications with routing, pyDAL, forms, grids, authentication, sessions and caching.

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Email

maddy – composable all-in-one mail server

May 25, 2026 Steve Emms Internet

maddy combines SMTP delivery, IMAP mail storage, authentication, flexible routing, TLS management, and email security in one server.

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System administration

syca – minimal sudo-like privilege elevation tool

December 28, 2025 Steve Emms CLI, Utilities

syca runs privileged commands through PAM authentication and a setuid helper, with timed authorization caching and status controls.

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System administration

gasroot – run a process as the root user

December 21, 2025 Steve Emms CLI, GUI, Utilities

gasroot launches authorized commands as root through a graphical password prompt, with wheel-group checks and environment controls.

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System Administration

asroot – simpler alternative to sudo and doas

November 4, 2025 Steve Emms CLI, Utilities

asroot runs commands as root for authorized wheel-group members, with password authentication and sanitized process environments.

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Administrators in action

sudo-rs – memory-safe implementation of sudo and su

November 4, 2025 Steve Emms CLI, Utilities

sudo-rs provides memory-safe sudo and su implementations with PAM authentication, sudoers rules, secure editing and audit logging.

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teleport – modern SSH server

October 20, 2025 Steve Emms Internet

Teleport centralises infrastructure access using short-lived credentials, role-based policies, session recording and an SSH-aware proxy.

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Server

Kanidm – identity management platform

August 31, 2025 Steve Emms Internet

Kanidm is an identity management platform with passkeys, RADIUS authentication, OpenID Connect, LDAP access and Linux integration.

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Google Firebase

Supabase – real-time databases, authentication services, and file storage

February 25, 2025 Steve Emms Programming

Supabase is an open-source alternative to Firebase, offering real-time databases, authentication services, and file storage.

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Server

authentik – flexible identity provider and authentication platform

April 8, 2024 Steve Emms Internet

authentik is an identity provider with single sign-on, flexible authentication policies, RADIUS outposts, LDAP and application proxies.

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Passive OS Fingerprinting

PacketFence – network access control solution

November 5, 2023 Steve Emms Security

PacketFence provides network access control with 802.1X authentication, captive portals, device registration and access enforcement.

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