Navigate to the respective directory and configure the environment variable and its value.
Navigate to the directory and open the file.
/lib/systemd/system/mfetpd.serviceIn Service section, add an entry.
<environment variable>=<user's proxy settings>For example:
http_proxy="http://username:usernamepassword@sampleproxy.url:5678"Reload the mfetpd service.
systemctl daemon-reload