Port 11211 — Memcached
Quick reference for TCP/UDP port 11211, used by Memcached. Includes what the service does, security guidance and related ports.
What is port 11211?
Memcached. UDP often abused for amplification — disable.
What port does Memcached use?
Memcached listens on port 11211 by default.
Security guidance
High risk — do not expose to the internet
Port 11211 (Memcached) is high-risk because the service it carries is a frequent target for credential attacks, brute force or unpatched-vulnerability scanning. Keep it bound to localhost or your VPN, never forward it directly on a router, and require strong authentication.
Related ports
Frequently asked
What is port 11211 used for?+
Port 11211 is the standard TCP/UDP port for Memcached. Memcached. UDP often abused for amplification — disable.
What port does Memcached use?+
Memcached listens on port 11211 by default.
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