Running scheduled sites cron in Aegir

?How to run scheduled cron for sites hosted in the Aegir system and is it still possible to run cron manually or maybe remotely, when needed?

!Aegir system manages scheduled cron for all your sites, and runs it by default every hour. There is no remote access to the cron.php file for security and performance reasons, and you can run cron manually only in 7.x core based sites. Note that you should use a button “Run cron” at admin/config/system/cron there and not a link at admin/reports/status. For the same reasons the 7.x built-in poormanscron and contrib poormanscron in 6.x is forced as disabled and never used to avoid conflicts or duplicate content – like rss based subscriptions etc.