Remote shutdown on OS 6.9.4?

Is there a way to do a remote shutdown on OS 6.9.4?

I tried these command on windows 10

curl -u admin: password -k "https://192.168.xxx.xxx/dbbroker" -H "Content-Type: application/x-www-form-urlencoded;" -H "X-Requested-With: XMLHttpRequest" --data "<?xml version="1.0" encoding="UTF-8"?><xs:nml xmlns:xs="http://www.netgear.com/protocol/transaction/NMLSchema-0.9" xmlns="urn:netgear:nas:readynasd" src="dpv_1368497621000" dst="nas"><xs:transaction id="njl_id_1278"><xs:custom id="njl_id_1277" name="Halt" resource-id="Shutdown" resource-type="System"><Shutdown halt="true" fsck="false"/></xs:custom></xs:transaction></xs:nml>"

(Already installed curl for windows, admin is 'admin', password is what I set up. )

 

but, returned message "403 Forbidden".