This pages describes how to secure a node-red installation: https://nodered.org/docs/security

I failed to install node-red-admin on IoT2020 therefore I couldn't use "node-red-admin hash-pw" to generate password hash.

The same procedures worked fine on Raspberry Pi 3 Model B

root@iot2000:~# npm install -g node-red-admin

npm ERR! Linux 4.4.13-yocto-standard

npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "install" "node-red-admin"

npm ERR! node v4.2.4

npm ERR! npm  v3.10.10

npm ERR! code EAI_AGAIN

npm ERR! errno EAI_AGAIN

npm ERR! syscall getaddrinfo

npm ERR! getaddrinfo EAI_AGAIN registry.npmjs.org:443

npm ERR!

npm ERR! If you need help, you may report this error at:

npm ERR!     <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:

npm ERR!     /home/root/npm-debug.log

root@iot2000:~# node-red-admin hash-pw

-sh: node-red-admin: command not found

Anyone know how to set DNS permanently on IoT2020?