tcp-keepalive

What problem does it solve?

This Skill addresses the issue of long-lived TCP connections dropping unexpectedly due to intermediate network devices (like routers or firewalls) timing out idle connections, or to detect dead connections more rapidly.

Core Features & Use Cases

• Tune TCP Keepalive Parameters: Adjust tcp_keepalive_time, tcp_keepalive_intvl, and tcp_keepalive_probes system-wide.
• Maintain NAT State: Ensures that intermediate devices keep NAT entries active for idle connections.
• Detect Dead Connections: Speeds up the detection of unresponsive remote hosts.
• Use Case: Resolve dropped VPN tunnels, gRPC streams, WebSocket connections, or SSH sessions that disconnect after periods of inactivity.

Quick Start

Apply the recommended TCP keepalive settings for systems behind a home router.