GTM to resolve WWW proxies for clients - LTM required?
Hello,
We are currently changing from using the F5 as an explicit proxy to loadbalance to upstream WWW proxies only, such that client proxy to the upstream devices.
I have config working to do this as: client proxy.pac ---> proxy = proxy1.acme.uk ---> GTM resolve wide ip proxy1.acme.uk ---> pool --> 3 x VS each containing one proxy
GTM are a total of three. the LTM VS live on the same BigIPs.
In the above configuration client proxy IP is resolved to the LTM VS chosen by the GTM. We are forced to use SNAT pools and XFF for WWW proxy identity awareness.
My question is, do we need to use LTM at all if we just need to resolve clients to a proxy IP. The aim is to resolve proxy1.acme.uk for a client directly to the upstream WWW proxiy IP with a level of client persistence as long as the proxy is alive and can reach the internet. NAT is not required and all clients can route to each up stream proxy.
I can see the benefit of using LTM with GTM for this but I have been asked if it is possible to remove client NAT and XFF.
Thank you for any help