Configure the F5 BIG-IP as an Explicit Forward Web Proxy Using LTM

In a previous article, I provided a guide on using F5's Access Policy Manager (APM) and Secure Web Gateway (SWG) to provide forward web proxy services. While that guide was for organizations that are...
Updated Dec 08, 2022
Version 2.0
application delivery
LTM
security
Steve_Lyons's avatar
Ret. Employee
My name is Steve Lyons and I reside in Tampa, FL with my 3 children, wife and Frenchie. We live the typical Florida life of swimming, fishing, boating, and BBQ. I started my F5 journey as a customer in 2009 where I was first introduced to it as a "load balancer." I have since deployed and maintained all modules realizing the BIG-IP is so much more. I joined F5 in 2015 where I have made it a personal mission to educate as many people as I can so they too can take advantage of the tremendous potential of the BIG-IP.
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Steve_Lyons's avatar
Ret. Employee
My name is Steve Lyons and I reside in Tampa, FL with my 3 children, wife and Frenchie. We live the typical Florida life of swimming, fishing, boating, and BBQ. I started my F5 journey as a customer in 2009 where I was first introduced to it as a "load balancer." I have since deployed and maintained all modules realizing the BIG-IP is so much more. I joined F5 in 2015 where I have made it a personal mission to educate as many people as I can so they too can take advantage of the tremendous potential of the BIG-IP.
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sonu_kumar4's avatar
sonu_kumar4
Icon for Altostratus rankAltostratus
Apr 04, 2019

Hello Steve,

 

We have a explicit F5 forward proxy server where I am able to access all external sites and it works fine however I can't reach any my internal sites , It said "DNS lookup failed " .

 

from Big IP I can resolve these sites but not working in browser., In DNS resolver list I have called the internal DNS server which can resolve all the DNS entries internal and external.

 

So please suggest where am I missing .