Monsoon

What Monsoon is

Monsoon is a free, open-source, self-hosted platform that combines DHCP service and IP address management in one Go binary. It supports DHCPv4 and DHCPv6, including relay information, prefix delegation, stateless mode, and dynamic DNS updates. IPAM tools provide subnet hierarchies, CIDR utilities, capacity planning, network discovery, conflict detection, and audit history. The embedded dashboard includes subnet, address, lease, reservation, discovery, audit, and settings views. REST and gRPC APIs, WebSocket events, and an MCP server provide programmatic access. Listed integrations include Slack and generic JSON webhooks, Prometheus metrics, and import tools for ISC DHCP, Kea, phpIPAM, NetBox, and CSV. Embedded storage uses a B+Tree index, write-ahead logging, snapshots, and crash recovery. Deployment examples cover systemd and Docker. Security features include local authentication, configurable TLS, rate limits, temporary lockouts, secure cookies, response headers, and authentication-event auditing. The current build does not support LDAP configuration. High availability is basic active-passive heartbeat and lease synchronization for controlled environments; multi-tenant SaaS is outside version one.