A Listener is a process on a Load Balancer that accepts incoming connections on a set of ports and forwards them, via its Rules, to Target Groups. There is a separate resource type per protocol — pick the one that matches the traffic you terminate.

Protocols

• HTTP Listener — L7, host + path routing, header rewrites

• HTTPS Listener — HTTP with TLS terminated at the load balancer (supply a Certificate or auto-generate one via Let's Encrypt), optional HTTP/2

• TCP Listener — L4 pass-through for any TCP service

• TLS Listener — L4 TCP with TLS terminated at the load balancer (supply a Certificate or auto-generate one via Let's Encrypt)

• UDP Listener — L4 pass-through for UDP services (e.g. DNS)

Common properties

• Load balancer — the LB the listener belongs to (spec.loadbalancerId)

• Interface — which side to bind: all (default), public, or private

• Ports — the ports the listener accepts connections on (spec.ports)

• Order — tie-breaking priority when multiple listeners match (spec.order)

• Security rules — optional IP allow/deny list applied before routing

Each protocol is a distinct resource with its own fields — open the specific listener page for its parameter table and examples.

Related pages

Resource docs

• HTTP Listener resource docs
• HTTPS Listener resource docs
• TCP Listener resource docs
• TLS Listener resource docs
• UDP Listener resource docs