cloudstack-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Will Stevens <wstev...@cloudops.com>
Subject Re: Supported Source NAT Type?
Date Thu, 18 Apr 2013 21:50:08 GMT
Thanks for the answer Sheng.

I currently have the Palo Alto firewall using the 'per account' method and
when 'IpAssocCommand' is run (when the first VM is added to a palo alto
network ), I am dynamically creating a public sub-interface and assigning a
public IP (provided by cloudstack).  I am also creating a private
sub-interface on the PA which I am using the the gateway for the CS
network.  I am dynamically creating/deleting the SourceNat rules between
the two sub-interfaces (gateway/cidr# -> public_ip/32) on implement and
shutdown.

In your eyes, is this the best way to handle this?  If I was to use the
'per zone' option, how would the Source Nat IP get set in Cloudstack?  So
there would be one public IP per zone which all the public traffic would go
through for all networks?  I would still have to handle the source nat
rules from each CS network to that single public IP I believe.

I am slowly getting this all documented at:
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Palo+Alto+Firewall+Integration

Thanks...


On Thu, Apr 18, 2013 at 5:19 PM, Sheng Yang <sheng@yasker.org> wrote:

> Hi Will,
>
> "Per zone" is mostly for external network devices(e.g. SRX). We can
> configure one public network address on SRX, and use that one(which is out
> of Cloudstack's control) for all the public traffic go through the device.
> That's "Per zone".
>
> "Per account" is the other way, used by VR in CloudStack. It would acquire
> one public ip from public ip pool in the zone for each isolated network,
> and make it source nat IP for the network. The name "per account" because
> in the past one user would have only one isolated network, so the network
> is de facto per account. It's not necessary true now, but the name remained
> I think.
>
> There are probably bad names, we should get better name than them...
>
> --Sheng
>
>
> On Thu, Apr 18, 2013 at 2:07 PM, Will Stevens <wstevens@cloudops.com>
> wrote:
>
> > Oh, my bad.  I forgot about that.
> >
> > On the 'create network service offering' overlay, if you select
> 'SourceNat'
> > in Supported Services, there is a drop down which get added.  The drop
> down
> > has the title of 'Supported Source Nat Type' and has two options: 'Per
> > zone' and 'Per account'
> >
> > Thanks,
> >
> > Will
> >
> >
> > On Thu, Apr 18, 2013 at 4:09 PM, Chip Childers <
> chip.childers@sungard.com
> > >wrote:
> >
> > > Will,
> > >
> > > Images and other attachments are stripped on this list (text only
> > > please!)
> > >
> > > Can you post the image somewhere or describe the list?
> > >
> > > On Thu, Apr 18, 2013 at 04:05:36PM -0400, Will Stevens wrote:
> > > > In the 'Create network service offering' flow there is this dropdown:
> > > >
> > > > [image: Inline image 1]
> > > >
> > > > What are the implications for picking one or the other?
> > > >
> > > > This code seems related in
> > > >
> > >
> >
> 'com.cloud.network.ExternalFirewallDeviceManagerImpl.manageGuestNetworkWithExternalFirewall()'
> > > > :
> > > > NetworkOffering offering =
> > > > _networkOfferingDao.findById(network.getNetworkOfferingId());
> > > > boolean sharedSourceNat = offering.getSharedSourceNat();
> > > >
> > > > IPAddressVO sourceNatIp = null;
> > > > if (!sharedSourceNat) {
> > > >     // Get the source NAT IP address for this account
> > > >     List<? extends IpAddress> sourceNatIps =
> > > > _networkMgr.listPublicIpsAssignedToAccount(network.getAccountId(),
> > > >             zoneId, true);
> > > >
> > > >     if (sourceNatIps.size() != 1) {
> > > >         String errorMsg = "External firewall was unable to find the
> > > source
> > > > NAT IP address for account "
> > > >     + account.getAccountName();
> > > >         s_logger.error(errorMsg);
> > > >         return true;
> > > >     } else {
> > > >         sourceNatIp =
> > > _ipAddressDao.findById(sourceNatIps.get(0).getId());
> > > >     }
> > > > }
> > > >
> > > > How does the 'sourceNatIp' get set if 'sharedSourceNat' is true?
> > > >
> > > > Thanks,
> > > >
> > > > Will
> > >
> > >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message