F5F Stay Refreshed Power Users Networks problem with iperf

problem with iperf

problem with iperf

K
ko94
Member
222
07-03-2025, 11:33 AM
#1
You're facing a common issue when testing network performance. The error suggests the server isn't accepting connections properly, possibly due to firewall rules or misconfigurations. Since you're running Iperf3 as a server but encountering connection timeouts, double-check the port settings and ensure the server is listening on the correct interface. Also verify that your client configuration matches the expected parameters.
K
ko94
07-03-2025, 11:33 AM #1

You're facing a common issue when testing network performance. The error suggests the server isn't accepting connections properly, possibly due to firewall rules or misconfigurations. Since you're running Iperf3 as a server but encountering connection timeouts, double-check the port settings and ensure the server is listening on the correct interface. Also verify that your client configuration matches the expected parameters.

1
10Justin
Member
105
07-09-2025, 01:27 AM
#2
Your security system might be preventing the link from forming.
1
10Justin
07-09-2025, 01:27 AM #2

Your security system might be preventing the link from forming.

B
bigssmol
Junior Member
49
07-09-2025, 04:16 AM
#3
You included the rules for both TCP and UDP. Iperf supports both protocols, and it likely uses TCP by default. You opened both UDP and TCP for Iperf as intended.
B
bigssmol
07-09-2025, 04:16 AM #3

You included the rules for both TCP and UDP. Iperf supports both protocols, and it likely uses TCP by default. You opened both UDP and TCP for Iperf as intended.

G
guguis_3000
Member
145
07-09-2025, 07:44 AM
#4
I included it as an incoming rule for port 5001 (both TCP and UDP) according to the instructions provided when launching the iperf2 server, but the connection remains unreachable.
G
guguis_3000
07-09-2025, 07:44 AM #4

I included it as an incoming rule for port 5001 (both TCP and UDP) according to the instructions provided when launching the iperf2 server, but the connection remains unreachable.

F
FuzzyMug
Senior Member
476
07-12-2025, 07:31 AM
#5
No, you cannot ping the server from the PC where you are running iPerf. The ping operation must be performed from the server itself.
F
FuzzyMug
07-12-2025, 07:31 AM #5

No, you cannot ping the server from the PC where you are running iPerf. The ping operation must be performed from the server itself.

D
Derpy_MC
Member
228
07-13-2025, 02:33 AM
#6
Neither clients are iperf2, one might be iperf3
D
Derpy_MC
07-13-2025, 02:33 AM #6

Neither clients are iperf2, one might be iperf3

J
John_Scarce
Junior Member
45
07-13-2025, 07:58 AM
#7
It's noted that your initial reference to iPerf3 was later updated to iPerf2.
J
John_Scarce
07-13-2025, 07:58 AM #7

It's noted that your initial reference to iPerf3 was later updated to iPerf2.

N
nickzach10
Member
163
07-14-2025, 02:46 AM
#8
Yes, I'm fine. Both the server and client are using iperf2. I changed to iperf2 to check for any problems unique to iperf3.
N
nickzach10
07-14-2025, 02:46 AM #8

Yes, I'm fine. Both the server and client are using iperf2. I changed to iperf2 to check for any problems unique to iperf3.

I
ImRio
Member
64
07-14-2025, 05:34 AM
#9
It seems to be a problem. That's strange.
I
ImRio
07-14-2025, 05:34 AM #9

It seems to be a problem. That's strange.