← Port Encyclopedia
68

DHCP-Client

UDP
Network Medium Risk
DHCP client — receives IP configuration, DHCP spoofing vulnerability

🔍 How to Scan Port 68

nmap -sV -p 68 target
nmap -sV -sC --script=banner -p 68 target
nc -zv target 68

🛡️ Security Considerations

  • Scan port 68 with nmap -sV to identify the exact service and version
  • If DHCP-Client is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit dhcp-client to find known exploits
  • Monitor traffic on port 68 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Network Ports

Port 67
DHCP-Server
Port 161
SNMP
Port 162
SNMP-Trap
Port 179
BGP
Port 199
SMUX
Port 201
AppleTalk
Port 264
BGMP
Port 427
SLP
Port 520
RIP
Port 521
RIPng
Port 524
NCP
Port 646
LDP

📍 Nearby Ports

Port 63
Port-63
Port 64
Port-64
Port 65
Port-65
Port 66
Port-66
Port 67
DHCP-Server
Port 69
TFTP
Port 70
Gopher
Port 71
Port-71
Port 72
Port-72
Port 73
Port-73
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