Use iperf to diagnose Linux network speed | Top Docs

[@rftech1608]

thank you I enjoyed the video it was the explanation I was looking to run some test with.

[@captmulch1]

Good one!

[@MrTon4eff]

I'm getting: "connect failed: Connection refused" in both directions on Debian 11 servers... :/ Maybe the firewall is blocking the port?

[@AkamaiDeveloper]

This thread might help with your issue serverfault.com/questions/280961/iperf-connect-failed-connection-refused

[@MrTon4eff]

​@@AkamaiDeveloper Thank you! Yes, it was iperf version mismatch... Now everything works fine with iperf3.

[@ruixue6955]

3:42 test UDP speed

[@nehajain2974]

I have installed iperf3 on my Linux machine and on my windows machine. Used iperf3 on Linux as server and windows as client. Getting only 37Mbits/sec. My router is gigabit. What seems to be the problem??? Please help