I am using iperf to measure my uplink speed between my home PC behind NAT and a fully accessible root server. It does so using a TCP connection. For whatever reason it seems that iperf can only measure client to server speed, where client is the one starting the TCP connection and server is the listening part.
Unfortunately my PC is behind NAT and the TCP connection can only be initiated in this direction.
Is there another tool that does this but uses the TCP connection in both directions?