Hi all,
I'm struggling a bit with a VPN between my site and a Data Center.
The VPN is rock solid but using iperf3 I can see that when a machine at the DC is acting as the iperf3 server, and a machine at the site is the client, we get a speed reading of around 8Mbps.
When we revers this and use the Data Center machine as a client, we get a speed reading of around 82Mbps.
I've tried changing MTU sizes but it doesn't seem to help.
Please could you help me get to the bottom of this?
Thanks
Just to provide a bit more updated info, I ran iperf3 on the host itself that has an LAN and a WAN interface in the Data Centre.
When I run iperf3 between the site and the host's WAN interface (i.e. bypassing the OPNsense firewall) I get 78Mbps, if I use the hosts LAN IP and go through OPNsense, I go back down to around 8Mbps.