A self-hosted gateway is a privately managed service that sits between users or applications and the systems they need to reach, such as internal APIs, model endpoints, file services, or external providers. It can enforce authentication, rate limits, logging, request filtering, budgeting, and routing rules before traffic is forwarded.
In cyber security, gateways matter because they concentrate control and visibility. If deployed correctly, they reduce direct exposure of backend systems and provide a single place to monitor misuse. If misconfigured or exposed to the internet, however, they become a valuable target: attackers may probe the gateway itself, abuse its trust relationships, or use it as a pivot into protected services. In malware campaigns, a compromised gateway or an exposed one can help attackers relay commands, proxy traffic, or reach internal APIs without touching each service directly. Defenders should restrict access, segment the gateway, review logs, and treat it as high-value infrastructure.