OpenWRT One Router blocks iperf test

Installing and Using OpenWrt
1

Hello,
i am new at the forum and i apologize when this question was already asked before.
I am trying to make an iperf bandwith test from one PC (Win 11, iperf server with allowed incoming rules in windows firewall for iperf) and another PC (iperf client) which is connected to ETH1 via ethernet cable with the OpenWRT Router "one". For the router i created a Wlan interface to which the iperf server is connected. The ping between server and client over the router is possible (1-3ms respond time), but iperf is not working (from server to client)

If i try the same configuation with another router (netgear), the iperf connection und test is possible. So i think it is not a Win 11 firewall problem, it should be in the router configuration. Under firewall rules i accepted everything (incoming packet, outgoing etc.).
With the standard configuration (i did also a reset with the switch on the back side) it also doesnt work ;(

Can you pls help me with my issue.
Thanks in advance,
Thomas

2

Thete is no filtering involved. Since you can ping your firewall is acting up. Set up wireguard on the "server" and catch traffic to iperf typical port.

3

It was a Windows issue. One should activate "private network" configruation and then iperf is working. Otherwise windows firewall blocks.

4

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