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AWS msk documentation change

Service: msk · 2026-02-25 · Documentation medium

File: msk/latest/developerguide/port-info.md

Summary

Added new IPv6 port mappings for broker communication: plaintext (20092), IAM access control (20098), SASL/SCRAM (20096), and TLS encryption (20094).

Security assessment

Documents new ports for encrypted communication (TLS) and authentication (IAM/SASL) over IPv6. While not fixing a security issue, it adds documentation for security-relevant network configurations supporting IPv6 deployments.

Diff

diff --git a/msk/latest/developerguide/port-info.md b/msk/latest/developerguide/port-info.md
index f1f3b5941..78dd7d267 100644
--- a//msk/latest/developerguide/port-info.md
+++ b//msk/latest/developerguide/port-info.md
@@ -17 +17,7 @@ Use the following port numbers so that Amazon MSK can communicate with client ma
-  * To communicate with Apache ZooKeeper by using TLS encryption, use port 2182. Apache ZooKeeper nodes use port 2181 by default.
+  * To communicate with brokers using IPv6 network type in plaintext, use port 20092
+
+  * To communicate with brokers in a cluster that is set up to use IAM access control using IPv6, use port 20098.
+
+  * To communicate with brokers with SASL/SCRAM using IPv6, use port 20096.
+
+  * To communicate with brokers with TLS encryption using IPv6, use port 20094.