Is port 1985 (Cisco HSRP) dangerous?

Port 1985 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 1985 be open on my firewall?

Port 1985 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

What transport protocol does port 1985 use?

Port 1985 (Cisco HSRP) uses the UDP transport protocol and falls under the System & Infrastructure category.

:1985 (UDP)

Cisco HSRP

Medium Risk

UDP — System & Infrastructure

Port Overview

Port Number 1985

Service Name Cisco HSRP

Transport Protocol UDP

Category System & Infrastructure

Security Risk Medium

Port Range Registered (1024-49151)

What is Port 1985?

Port 1985 is used by Cisco Hot Standby Router Protocol (HSRP) for first-hop redundancy. HSRP allows multiple routers to present a virtual IP and MAC address, providing automatic failover if the active router fails. It is a fundamental protocol in highly available Cisco network designs.

UDP System & Infrastructure Commonly Used

Security Considerations

Port 1985 (Cisco HSRP) 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