| | 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) |
The ZMM220 platform operates on an embedded Linux ecosystem. For over a decade, these boards shipped with standard factory credentials intended for debugging, field diagnostics, and integration troubleshooting. Common Legacy Credentials
In response to modern cybersecurity standards and strict IoT security regulations, ZKTeco updated its firmware architecture.
Implement strict Firewall Access Control Lists (ACLs) that restrict incoming traffic to the hardware. Only allow communications originating from the verified static IP address of your central access control server. zmm220 default telnet password updated
What (e.g., iClock 880, SilkBio) is printed on your device casing?
To mitigate these risks, administrators must override the default factory credentials. This can be achieved through internal software command lines or via configuration updates. Method 1: Changing the Password via Active Telnet Session
Attackers can download the device's internal database ( ssruser.dat or SQLITE databases), compromising the biometric templates (fingerprint or facial hashes) and Personal Identifiable Information (PII) of your workforce. | | Default Username | Default Password |
If you are prompted for a login and successfully enter using root and solos , your device is running outdated, vulnerable firmware. 2. Disable Telnet via the Device Menu If your device has a local display and keypad: Press the button to enter the main menu. Navigate to Comm. (Communication Settings). Select PC Connection or Ethernet .
: Malicious bots constantly scan enterprise subnets for ports 23 (Telnet) and 554 (RTSP).
By staying informed and taking proactive steps to manage their Telnet passwords, ZMM220 users can ensure the continued secure and reliable operation of their device. Implement strict Firewall Access Control Lists (ACLs) that
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.
Often, the best way to secure a ZMM220 device is to turn off the Telnet daemon entirely, forcing the device to rely on secure communication protocols.
: Place all ZMM220-powered access control terminals on a dedicated, isolated Virtual Local Area Network (VLAN).
Before closing your current session, open a second, separate terminal window and attempt to log in using the new credentials. This ensures the update was successful without accidentally locking yourself out of an active session. Once confirmed, type exit in both windows to close the connections. Advanced Hardening and Security Best Practices