Is port 847 (DHCP Failover 2) dangerous?

Port 847 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 847 be open on my firewall?

Port 847 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 847 use?

Port 847 (DHCP Failover 2) uses the TCP transport protocol and falls under the System & Infrastructure category.

:847 (TCP)

DHCP Failover 2

Medium Risk

TCP — System & Infrastructure

Port Overview

Port Number 847

Service Name DHCP Failover 2

Transport Protocol TCP

Category System & Infrastructure

Security Risk Medium

Port Range Well-Known (0-1023)

What is Port 847?

DHCP Failover Protocol secondary port, used alongside port 647 in some DHCP failover implementations for lease state synchronization.

TCP System & Infrastructure

Security Considerations

Port 847 (DHCP Failover 2) 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.

Related Ports — System & Infrastructure

0 Reserved 1 TCPMUX 2 Management Utility 3 CompressNET 4 Unassigned 5 RJE 6 Unassigned 7 Echo

Related Terms

Bandwidth Latency Packet Loss Ping Throughput ASN