This is a backlogged feature. We do support symmetrical port mapping today.
An error occurred while saving the commentJohannes Norrbacka commented
Outrageous! A true basic key feature that makes the whole thing close to unusable. As a customer of Azure, with all of its "supposed" feature sets, one cannot stop getting the feeling of being told: You can do anything you want, but you have to do it this specific way with these limitations. It's like saying: "Sure, you can use math on our platform, but we do not support multiplication, division, subtraction or addition. Are not Azure awesome?"