Maybe this is a lame question, but I don't have enough knowledge now.
We have one server xxx.com with a static IP.
Somebody has another server yyy.com with a static IP.
We have clients with dynamic IPs.
yyy.com has a policy that they allow access only from certain IPs (whitelist).
We added xxx.com into this list.
But because of dynamic IP clients we must run a "proxy" on xxx.com to take packets from dynamic IP clients and send them to yyy.com, get the results from yyy.com and return them to the clients.
The problem is that we must program this in the xxx.com server.
I don't know, but maybe port forwarding can solve this problem.
I don't know that port forwarding can work as a proxy or not.
So will yyy.com see that packet come from xxx.com (whitelisted) or will it contain the original, dynamic IP (which is forbidden access)?
What do you think?
I also have a "Port forwarding" question here: Port forwarding software (service) for Windows
Can port forwarding solve my problem?