I cannot get this working. I want to reverse proxy from the server to a second server, but handle ports also, eg
From [http://126.96.36.199:81/] to [http://188.8.131.52:81/] and [http://184.108.40.206:90/] to [http://220.127.116.11:90/]
The reverse proxy works as if I use just the default port free IP address of the proxy server I get fed the correct back end server.
I cannot get the syntax right. Tried all combos rewrite maps and other rules to no avail.
Many thanks for any assistance.