37777
Dahua DVR TCP
Critical RiskTCP — Other
Port Overview
Port Number
37777
Service Name
Dahua DVR TCP
Transport Protocol
TCP
Category
Other
Security Risk
Critical
Port Range
Registered (1024-49151)
What is Port 37777?
Default TCP client access port for Dahua brand DVR, NVR, and IP camera systems. Used by Dahua's proprietary client software (SmartPSS, DSS) for remote viewing and management. Heavily targeted in botnet and vulnerability scanning campaigns.
TCP
Other
Commonly Used
Security Considerations
Port 37777 (Dahua DVR TCP) is classified as critical risk. This port should not be exposed to the public internet. The service transmits data without encryption, making it vulnerable to eavesdropping, credential theft, and man-in-the-middle attacks.
Recommendation: Block this port at the firewall. Use encrypted alternatives (SSH, SFTP, HTTPS) instead.