How to take back up of remote influx db?

influxd has an option to take backup of remote db. However it doesn’t have an option to pass credentials.

This works
influxd backup -host avilpage.com:50243 ./influx.db

But this fails
influxd backup -host avilpage.com:50243 -password password -username user ./influx.db

Is there an alternate way to backup remote influxdb?