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Course Outline

Decentralized Communication Sovereignty

  • Why centralized chat poses a data governance risk.
  • Overview of the Matrix protocol: rooms, events, and federation.
  • Comparison of Synapse vs Dendrite homeserver options.

Homeserver Deployment

  • Setting up a Docker Compose stack with Synapse, PostgreSQL, and Element Web.
  • Reverse proxy configuration using Nginx and LetsEncrypt.
  • Federation setup: configuring .well-known delegation and port 8448.

Authentication and Identity

  • Local authentication, LDAP integration, and OpenID Connect.
  • User registration policies and guest access controls.
  • Implementing SSO with Keycloak, Authentik, or Authelia.

End-to-End Encryption

  • Cross-signing and device verification workflows.
  • Key backup and recovery strategies for lost devices.
  • Administrative implications of encrypted rooms and export rules.

Spaces, Rooms, and Bridges

  • Structuring enterprise spaces for departments and projects.
  • Utilizing IRC, Slack, and Telegram bridges for inter-team communication.
  • Leveraging threading, reactions, and bots for automation.

Security and Moderation

  • Using the Admin API for user management, room shutdowns, and data deletion.
  • Configuring privacy settings: message retention, redaction, and media purging.
  • Implementing rate limiting and CAPTCHA to mitigate spam registration.

Maintenance and Scaling

  • Postgres maintenance: vacuum operations, indexing, and long-term retention strategies.
  • Sizing the media repository and offloading to S3.
  • Monitoring with Prometheus and establishing logging retention policies.

Requirements

  • Intermediate knowledge of Linux system administration and basic Docker concepts.
  • Understanding of federated messaging protocols and HTTPS.
  • Familiarity with web proxy configuration (Nginx/Apache).

Audience

  • Enterprise IT teams looking to replace Slack, Teams, or Discord with sovereign messaging solutions.
  • Regulated industries such as healthcare, finance, and defense.
  • Advocates of decentralization and privacy-focused organizations.
 14 Hours

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