If your use case is "remotely trigger execution of a very small set of fixed commands, securely" then there's Ostiary: https://openwrt.org/docs/guide-user/servi

If your use case is "remotely trigger execution of a very small set of fixed commands, securely" then there's Ostiary: https://openwrt.org/docs/guide-user/services/remote_control/ostiary.server https://openwrt.org/docs/guide-user/services/remote_control/... Its value is in the simplicity of the crypto protocol used for this - basically "hash a password with a one time pad".