1985
Cisco HSRP
Medium RiskUDP — 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.