Port 11214 (memcached TLS / Couchbase)

Used by Couchbase for TLS memcached-protocol data access.

Registered (user) port, 1024-49151 TCP Caches Do not expose to the internet

What port 11214 is used for

Used by Couchbase for TLS memcached-protocol data access.

Do not expose to the internet. Internal only.

Port 11214 is in the registered range and has no IANA assignment. The usage above is unofficial but widespread.

Linux: is anything listening on TCP 11214?

sudo ss -tlnp 'sport = :11214'

Linux / macOS: which process owns the port

sudo lsof -nP -i :11214

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':11214 '

Windows (Command Prompt)

netstat -ano | findstr :11214

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 11214 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 11214

From Windows

Test-NetConnection HOST -Port 11214

ufw

sudo ufw deny 11214/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 11214 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 11214 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 11214' -Direction Inbound -Protocol TCP -LocalPort 11214 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.