The one-arm direct routing (DR) mode is the recommended mode for Loadbalancer.org installation because it's a very high performance solution with very little change to your existing infrastructure |
If DR is not possible the second choice would be NAT. This is also a fairly high performance solution but it requires the implementation of a two arm infrastructure with an internal and external subnet to carry out the translation. (the same way a firewall works). |
If your application requires that the load balancer handles cookie insertion then you need to use the SNAT configuration. This also has the advantage of a one arm configuration and does not require any changes to the application servers. |