Iperf3 server


I’m trying to run a quick iperf3 server (iperf3 -s) on sys-net to run some speed tests, but the iperf client (my phone) never connects to it. When I try the same thing on a live Linux Mint usb on the same computer, it works.

What should I do to make it work on sys-net?


Hi @g8d7w,
welcome to the Qubes-OS world.

Launch a terminal in sys-net, and look the firewall setting (ex: sudo iptables -L), you will understand…

Thank you @ludovic! You pointed me in the right direction.

For anyone reading this in the future, I looked up an iptables tutorial and created a rule (as number 1) in the INPUT table to accept all connections from my phone’s local IP (let’s say

sudo iptables -I INPUT 1 -s -j ACCEPT

After running my iperf3 server and tests successfully, I deleted the rule:

sudo iptables -D INPUT 1