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AWS elasticloadbalancing documentation change

Service: elasticloadbalancing · 2025-11-16 · Documentation low

File: elasticloadbalancing/latest/network/load-balancer-listeners.md

Summary

Added support for QUIC and TCP_QUIC protocols, updated WebSocket support, and clarified QUIC version requirements

Security assessment

The changes introduce new protocol support (QUIC/TCP_QUIC) and technical limitations (QUIC version enforcement), but there's no evidence of addressing existing vulnerabilities or security weaknesses. The RFC9000 reference indicates standards compliance rather than security remediation.

Diff

diff --git a/elasticloadbalancing/latest/network/load-balancer-listeners.md b/elasticloadbalancing/latest/network/load-balancer-listeners.md
index ec8b3b1ad..ff9b41ccf 100644
--- a//elasticloadbalancing/latest/network/load-balancer-listeners.md
+++ b//elasticloadbalancing/latest/network/load-balancer-listeners.md
@@ -44 +44 @@ Listeners support the following protocols and ports:
-  * **Protocols** : TCP, TLS, UDP, TCP_UDP
+  * **Protocols** : TCP, TLS, UDP, TCP_UDP, QUIC, TCP_QUIC 
@@ -54,0 +55,2 @@ If you must ensure that the targets decrypt TLS traffic instead of the load bala
+You can use a QUIC listener to accept QUIC traffic. The Network Load Balancer acts as a pass through load balancer in accordance with [RFC9000](https://tools.ietf.org/html/rfc9000). Utilize a QUIC listener and QUIC enabled backends to enable seamless connection migration for mobile devices.
+
@@ -56,0 +59,2 @@ To support both TCP and UDP on the same port, create a TCP_UDP listener. The tar
+To support both TCP and QUIC on the same port, create a TCP_QUIC listener. The target groups for a TCP_QUIC listener must use the TCP_QUIC protocol.
+
@@ -59 +63,3 @@ A UDP listener for a dualstack load balancer requires IPv6 target groups.
-WebSockets is supported only on TCP, TLS, and TCP_UDP listeners.
+WebSockets is supported only on TCP, TLS, TCP_UDP, and TCP_QUIC listeners.
+
+QUIC traffic does not support version negotiation. QUIC v1 is the only supported QUIC version.