VPN Speeds capped?

VPN
1

I’ve done some mild searching and havent found anything. Can someone give me some suggestions on what would be causing my VPN connections to be capped at 280 Mbps (up and down)?

I am using the wireguard road warrior vpn setup. I have verified that both sides have close to 1gbps up/down speeds, but continue to be lmited to 280/280 when connected to the vpn. I followed the vpn setup guide provided by opnsense. https://docs.opnsense.org/manual/how-tos/wireguard-client.html

OPNsense is running on my old gaming pc with a i7-4790K CPU @ 4.00GHz w/ 32GB RAM.

2

Did you watch top during these transfers to see how the CPU is doing? Do you have any IPS enabled?

3

We had the same issue, and the fix for us was setting a lower MSS on the wireguard interface. I think 1380 worked well and increased the speeds substantially.

4

This is dumb but if there’s a cable involved, check to make sure it’s not super ancient

5

Are both devices capable enough to exceed 280mbps? The opnsense box is plenty capable, but what about the other device?

6

Try and check this video for guidance: https://www.youtube.com/watch?v=b58PpuIsQ3A

7

4-12% CPU usage. No IPS

8

cpu % was through the GUI. If i monitor through shell its about 8% if i try a large file.

9

I had a setting for MSS @ 1380 in the “normalization” tab of the firewall, but did not set it on the interface. I added 1380 to the WG vpn interface and it did nothing. Even lowering to 1340 on one/both had zero impact.

10

Unfortunately its nothing like that. The test PC has gig speeds, and my connection from home has gig speeds tested on multiple devices. The VPN would only be using the WAN cable, which is proven

11

Yes. Both devices are capable. The device I’ve been using to test has 1gbps fiber, and is an i9-9900k.

12

Watch the usage per core, not overall

13

Bummer. Hope you find a solution!

14

I have MSS @ 1300 in FIREWALL: SETTINGS: NORMALIZATION. There is a + button to add a new detailed setting. But do not have it set on the interface WG1. VPN speed is as expected.

I followed this video to get it setup.

https://www.youtube.com/watch?v=b58PpuIsQ3A

15

22% max on a single core during speed test