Use the flag --allow_same_net_traffic : "This flag will allow all traffic from other vms (and host machines) in the same network. It defaults to true. If you would prefer to block all vm-vm traffic and use security groups to manage vm-vm traffic, set this flag to false." On Wed, Apr 4, 2012 at 6:59 PM, William Herry <william.herry.china at gmail.com > wrote: > Greeting: > > I want my instances not be able to communicate to each other, I know it is > possible to set the firewall manually. I just want know if there are more > graceful way to do that > > thanks > > William Herry > > -- > Where there is a will, there is a way. > > WilliamHerryChina at Gmail.com > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20120404/ce7dc3ca/attachment.html>