I am trying to reproduce a network-related performance problem from a remote site to a cloud-hosted system I'm responsible for. They get awful performance from their location, I get fine performance from mine. I have a hardware WAN emulator (Apposite Linktropy Mini2 in this case) I can use to try to simulate their network to reproduce the problem. But first, I need to know the performance characteristics of the network between them and the server.
What I need is a concise way that I could have an average user run from their PC or whatever that could sum up bandwidth, latency, packet loss, and whatever else I can get. Ideally they'd just put in a DNS name and generate some numbers they can feed me - I can't have them do all kinds of techie work, make them find a Linux box, etc.
What would a good tool be that would characterize the network between two points?