Hikvision NVRs support a range of network protocols that allow them to communicate with IP cameras, client software, network services, and third-party systems.
The exact protocols and available functions vary by NVR model, firmware version, and product series. Therefore, users should always check the technical specifications of the specific recorder being deployed.
This article introduces several commonly supported protocols and explains their role in a Hikvision NVR system.
1. ONVIF
ONVIF is an open industry standard designed to improve interoperability between IP-based security products from different manufacturers.
Many Hikvision NVRs support ONVIF-compatible IP cameras, allowing users to connect supported third-party cameras to the recorder.
Depending on the camera and NVR combination, ONVIF may support functions such as:
- Video streaming
- Basic device discovery
- Camera configuration
- PTZ control
- Event integration
However, not every advanced camera feature is guaranteed to work through ONVIF.
Functions such as advanced analytics, smart events, metadata, or proprietary configuration features may require native Hikvision integration or manufacturer-specific support.
2. RTSP
RTSP, or Real-Time Streaming Protocol, is commonly used to access live video streams over an IP network.
A Hikvision NVR can provide RTSP video streams that may be accessed by compatible applications, media players, VMS platforms, or other systems.
RTSP streams may include:
- Main stream
- Sub-stream
- Individual camera channels
- NVR channel streams
The exact RTSP URL format, channel number, and stream type depend on the recorder model and configuration.
Authentication is normally required when accessing RTSP streams.
3. SNMP
SNMP, or Simple Network Management Protocol, is used for monitoring and managing network-connected devices.
Some Hikvision NVR models support SNMP, allowing network-management systems to monitor device status and certain system information.
Depending on the model, SNMP may be useful for:
- Device status monitoring
- Network-health monitoring
- System supervision
- Integration with centralized IT management platforms
SNMP support is not available on every Hikvision NVR, so the specifications of the exact model should be checked.
4. HTTPS
HTTPS provides encrypted communication between the user and the NVR.
When HTTPS is enabled, browser-based management and other supported network communications can be protected using TLS encryption.
This helps protect:
- Login credentials
- Configuration data
- Management sessions
- Network communication
For security-sensitive deployments, HTTPS is generally preferred over unencrypted HTTP.
Users should also configure strong passwords, certificates, and appropriate network-access controls.
5. FTP
FTP is a file-transfer protocol used to transfer files between devices on a network.
Some Hikvision NVR models or firmware versions may support FTP-related functions for uploading certain files or data to an FTP server.
The supported functions can vary significantly by model.
Depending on the system, FTP-related functions may be used for items such as:
- Snapshots
- Event-related files
- Selected data uploads
- System integration tasks
It should not be assumed that every Hikvision NVR can automatically transfer all recorded video files to an FTP server.
Always verify the FTP capabilities of the specific recorder model.
6. DHCP
DHCP, or Dynamic Host Configuration Protocol, allows a Hikvision NVR to automatically obtain network parameters from a DHCP server or router.
These parameters may include:
- IP address
- Subnet mask
- Default gateway
- DNS server address
DHCP can simplify initial installation and network setup.
However, for permanent surveillance systems, many installers prefer to use a static IP address or DHCP reservation so the NVR maintains a predictable network address.
7. DNS
DNS, or Domain Name System, translates domain names into IP addresses.
A Hikvision NVR may use DNS servers when it needs to communicate with network services identified by domain names.
DNS may be involved in functions such as:
- NTP server access
- Email server communication
- Cloud services
- Remote services
- Other hostname-based network connections
DNS itself does not automatically provide remote access to an NVR.
Remote access may also require appropriate routing, VPN configuration, DDNS, Hik-Connect, firewall settings, or other network services.
Other Common Protocols and Services
Depending on the NVR model, Hikvision recorders may also support additional protocols and services, including:
TCP/IP
TCP/IP provides the basic network communication framework used by the recorder.
HTTP / HTTPS
Used for web-based device access and management.
NTP
NTP allows the NVR to synchronize its system clock with a network time server.
Accurate time synchronization is important for recording timestamps and event logs.
SMTP
SMTP may be used to send email notifications for supported alarm or event conditions.
ISAPI
Hikvision ISAPI is an HTTP-based application programming interface used for device integration and management.
It can provide access to functions that may not be available through open protocols such as ONVIF.
Hik-Connect
Hik-Connect is Hikvision’s remote-access platform for supported devices.
It allows compatible NVRs to be accessed through supported mobile applications and client platforms without relying solely on direct public-IP access.
Conclusion
Hikvision NVRs support multiple network protocols for camera integration, video streaming, device management, network configuration, and remote access.
Common protocols include ONVIF, RTSP, HTTPS, DHCP, and DNS, while features such as SNMP and FTP may depend on the specific recorder model and firmware.
For third-party camera integration, ONVIF and RTSP are especially important. For secure management, HTTPS should be preferred. For network configuration, DHCP and DNS help simplify communication with other network services.
Because protocol support varies between Hikvision NVR models, always check the datasheet and user manual for the exact recorder before designing or deploying the system.