546
DHCPv6 Client
Medium RiskUDP — System & Infrastructure
Port Overview
Port Number
546
Service Name
DHCPv6 Client
Transport Protocol
UDP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 546?
Port 546 is assigned to DHCPv6 client, used by IPv6 hosts to receive dynamic address configuration from DHCPv6 servers (RFC 3315). Critical for IPv6.
UDP
System & Infrastructure
Commonly Used
Security Considerations
Port 546 (DHCPv6 Client) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.