Hello.
I’m using WireGuard(UDP) to connect my three VPS together, one of which is DigitalOcean’s droplet. And I noticed that when I’m using iPerf3 to test DigitalOcean’s inbound bandwidth, the speed dropped to nearly zero after 1-2 seconds. Here is the output of iPerf3 (on my another VPS): (10.200.200.2 is the IP of DigitalOcean’s droplet connected with WireGuard)
$ iperf3 -c 10.200.200.2
Connecting to host 10.200.200.2, port 5201
[ 4] local 10.200.200.1 port 43684 connected to 10.200.200.2 port 5201
[ ID] Interval Transfer Bandwidth Retr Cwnd
[ 4] 0.00-1.00 sec 33.6 MBytes 281 Mbits/sec 4 2.48 MBytes
[ 4] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 27 2.45 MBytes
[ 4] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 27 2.41 MBytes
[ 4] 3.00-4.00 sec 4.92 MBytes 41.3 Mbits/sec 24 2.99 MBytes
[ 4] 4.00-5.00 sec 0.00 Bytes 0.00 bits/sec 27 2.95 MBytes
[ 4] 5.00-6.00 sec 0.00 Bytes 0.00 bits/sec 27 2.92 MBytes
[ 4] 6.00-7.00 sec 0.00 Bytes 0.00 bits/sec 27 2.88 MBytes
[ 4] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec 27 2.85 MBytes
[ 4] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 27 2.81 MBytes
[ 4] 9.00-10.00 sec 0.00 Bytes 0.00 bits/sec 27 652 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 38.5 MBytes 32.3 Mbits/sec 244 sender
[ 4] 0.00-10.00 sec 35.4 MBytes 29.7 Mbits/sec receiver
iperf Done.
But there’s no problem to send data:
$ iperf3 -c 10.200.200.2 -R
Connecting to host 10.200.200.2, port 5201
Reverse mode, remote host 10.200.200.2 is sending
[ 4] local 10.200.200.1 port 43688 connected to 10.200.200.2 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 15.3 MBytes 129 Mbits/sec
[ 4] 1.00-2.00 sec 16.3 MBytes 137 Mbits/sec
[ 4] 2.00-3.00 sec 15.9 MBytes 133 Mbits/sec
[ 4] 3.00-4.00 sec 25.1 MBytes 211 Mbits/sec
[ 4] 4.00-5.00 sec 33.3 MBytes 280 Mbits/sec
[ 4] 5.00-6.01 sec 30.7 MBytes 256 Mbits/sec
[ 4] 6.01-7.00 sec 31.0 MBytes 262 Mbits/sec
[ 4] 7.00-8.00 sec 23.0 MBytes 193 Mbits/sec
[ 4] 8.00-9.00 sec 33.6 MBytes 281 Mbits/sec
[ 4] 9.00-10.00 sec 34.3 MBytes 288 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 262 MBytes 220 Mbits/sec 21 sender
[ 4] 0.00-10.00 sec 260 MBytes 218 Mbits/sec receiver
iperf Done.
Using my 3rd VPS, I can still reproduce the problem, so basically I think this is a problem of DigitalOcean’s droplet.
I guess that maybe some of your DDoS protection system is blocking high-bandwidth UDP, but I’m not sure. Can you help me tracing the problem down?
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I guess that maybe some of your DDoS protection system is blocking high-bandwidth UDP, but I’m not sure. Can you help me tracing the problem down?
I think what you stated here is correct. They are probably shielding off their network. You might have more success to getting info at the support.
If they give any insight on this, would be great if you could share it back here for the community ;)
Cheers