Historically, many ZMM220-based devices shipped with easily guessable or well-documented credentials. As firmware security improved to combat botnets and unauthorized access, manufacturers began "hardening" these devices. 1. The Legacy Credentials
Enter the administrator password. (The default password is 1234.) www.zkteco.com.br zmm220 default telnet password updated
Use the passwd command immediately.
Once logged in via the sticker password, change it to a strong, unique password: change it to a strong