This is a telnet server without root permission, also it can change your adb debug connection from USB cable to network/WiFi If you install it on Android 3. 1 or greater, please do run this app at least once after installation or update, then the Telnetd auto boot service can be registered to the Android system.
According to the antivirus report, the app doesn't contain viruses or any kind of malware. Telnet Server & Network adbd was originally created by WaxRain Tech. and it is included in the Tools category. This application has the overall rating 4.3 on Google Play.