← Port Encyclopedia
49

TACACS

TCP/UDP
Authentication High Risk
TACACS+ — network device authentication, authorization, and accounting

🔍 How to Scan Port 49

nmap -sV -p 49 target
nmap -sV -sC --script=banner -p 49 target
nc -zv target 49

🛡️ Security Considerations

  • Scan port 49 with nmap -sV to identify the exact service and version
  • If TACACS is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit tacacs to find known exploits
  • Monitor traffic on port 49 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Authentication Ports

Port 88
Kerberos
Port 464
Kerberos-Change
Port 749
Kerberos-Admin
Port 1812
RADIUS
Port 1813
RADIUS-Acct
Port 3868
Diameter
Port 9595
PingFederate

📍 Nearby Ports

Port 44
Port-44
Port 45
Port-45
Port 46
Port-46
Port 47
Port-47
Port 48
Port-48
Port 50
Port-50
Port 51
Port-51
Port 52
Port-52
Port 53
DNS
Port 54
Port-54
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