Which (e.g., BioTime, ZKTime) are you using to control the devices?
Searching for official documentation of the ZMM220's default Telnet credentials yields frustrating results. ZKTeco has never publicly released the default Telnet username and password for the ZMM220 platform, primarily because these credentials were intended for internal development and testing purposes only, not for end-user access.
The device is when properly configured (typically at a static IP address such as 192.168.1.201). zmm220 default telnet password updated
Restrict device network access to a dedicated, firewall-monitored VLAN.
| | Default Username | Default Password | |:---|:---|:---| | Web Server (General) | Admin | 123456 | | Web Server (Higher Security) | admin | zkteco@12345 | | Web Server (KF1000 Series) | Admin | admin@123 | | Webserver (F34 Lite) | admin | admin@123 | | Standalone Controller | — | 0 (1-6 digits) | Which (e
Additionally, if you can shown in your system settings, I can help you look up the latest security patches . Installation & User Guide - ZKTeco
(Note: The exact command may vary based on the specific firmware version; consult your vendor manual for the precise persistent storage command). Step 6: Test and Verify the New Configuration The device is when properly configured (typically at
The 2025 security update—which implements a and requires a firmware update to version 15.00 for the ZMM220 platform—represents a significant step forward in securing these widely deployed devices. The key takeaway for administrators is straightforward: do not treat the ZMM220 platform as having a “default Telnet password” to be used for routine management. Instead, leverage the documented web interface and connection protocols, implement the security measures outlined above, and keep firmware current to maintain the strongest possible security posture for your biometric access control infrastructure.
If the physical device menu permits, turn off unused discovery protocols, web servers, and legacy push communication ports (such as port 4370 UDP/TCP) if your architecture relies strictly on WAN/ADMS protocols.
: Typical pairs like root:root , root:colorkey , root:solokey , or root:swsbzkgn .