FWD » Core Development » Runtime Infrastructure

In #9533-19, a customer had a server configured with admin port 7443 but a web client port range of 7403 - 7470 which certainly cannot work well. They reported that it was not just a small effect. The entire system ground to a halt.

They retested after fixing the configuration problem and the testing went better. We don't have a sure answer that the port conflict caused the really bad results but it seems likely.

I suspect that our approach of using scanning for detecting the open ports is making us very fragile in this case. If that is correct, even a single port that responds in an unusual way can potentially cause a denial of service. That would not be OK for us to allow.

Please see if we can duplicate this bad behavior and if so we need to resolve it.