← Port Encyclopedia
3128
Squid
TCP
Proxy
High Risk
Squid proxy — web caching proxy, open proxy abuse, SSRF
🔍 How to Scan Port 3128
nmap -sV -p 3128 target
nmap -sV -sC --script=banner -p 3128 target
nc -zv target 3128
🛡️ Security Considerations
- Scan port 3128 with
nmap -sVto identify the exact service and version - If Squid is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit squidto find known exploits - Monitor traffic on port 3128 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation