← Port Encyclopedia
11211
Memcached
TCP/UDP
Database
Critical Risk
Memcached — in-memory cache, amplification DDoS, data exposure
🔍 How to Scan Port 11211
nmap -sV -p 11211 target
nmap -sV -sC --script=banner -p 11211 target
nc -zv target 11211
🛡️ Security Considerations
- Scan port 11211 with
nmap -sVto identify the exact service and version - If Memcached is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit memcachedto find known exploits - Monitor traffic on port 11211 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation