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Re: [lvs-users] Difference between NAT and FullNAT - help needed

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] Difference between NAT and FullNAT - help needed
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Fri, 1 Feb 2013 17:05:51 +0900
On Fri, Feb 01, 2013 at 08:42:25AM +0100, Stefan Bauer wrote:
> -----Ursprüngliche Nachricht-----
> Von:  Simon Horman <horms@xxxxxxxxxxxx>
> > Traditionally IPVS-NAT has worked in the form of destination-NAT,
> > that is modifying the destination IP address to that of the real-server.
> > This works well for in a wide range of circumstances.
> > 
> > More recently Full NAT support was added. This modifies
> > source IP address to that of the linux-director as well
> > as the destination IP address to that of the selected real-server.
> 
> So the linux-director does not have to be the default-gw for the real-servers 
> anymore with Full-NAT?

Return packets still need to travel through the linux-director
as the Full-NAT as the address translations need to be reversed.

> > An example of where full NAT may be useful is if a real-server wants to
> > access a virtual service handled by the linux-director of the real-server.
> 
> Stefan
> 
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