Most IP cameras can support remote access via Telnet protocol. Telnet protocol enables the technician to config or tweak the camera’s settings easily, yet it makes your camera be vulnerable in terms of security. Therefore some brands of IPC don't support telnet, for instance, after the hacking scandal incident, Hikvision products installed with latest firmware no longer supported the telnet access.
Connect the Dahua NVR via telnet in Windows, you can use PuTTY tool. Type the IP address of your device, then login with root, input the default password vizxv. Since many users don’t know the existence of this password, unlikely it will be modified by users, so the DVR is vulnerable and anyone can connect it via the telnet protocol. Dahua IP cameras utilize the same operating system, hence you can connect to them too.
By the way, if you use the Windows 7 OS computer, you can use the Microsoft Telnet Client. To enable Telnet in Windows 7 OS:
Please note the telnet works via TCP on port 23.
After successfully logon, you can try many different commands, herein we introduce you some as below:
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