← Port Encyclopedia
88
Kerberos
TCP/UDP
Authentication
Critical Risk
Kerberos authentication — Active Directory, ticket-granting, Kerberoasting attacks
🔍 How to Scan Port 88
nmap -sV -p 88 target
nmap -sV -sC --script=banner -p 88 target
nc -zv target 88
🛡️ Security Considerations
- Scan port 88 with
nmap -sVto identify the exact service and version - If Kerberos is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit kerberosto find known exploits - Monitor traffic on port 88 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation