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rsenio

I've been having a hard time getting better throughput on my Hyper-V OpenVPN Access Server 2.1.1. Guest OS is Ubuntu 14.04.4 LTS.

I've tried many of the usual directives, rcvbuf, sndbuf, msfix etc etc.

I've tried TCP and UDP, but I don't get the same performance as I would if I connect to another SSL VPN that I've quickly setup here. And, from my test it seems as though I get the "best" OpenVPN AS performance without any of those particular directives in place. Currently, all I've got is

Server:
resolv-retry infinite
persist-key
persist-tun
keepalive 10 120
tcp-nodelay

Client:
route-method exe
keepalive 10 120
resolv-retry infinite
persist-key
persist-tun

Connection to the office is 200Mbps up and down (fiber). Test client uses 50Mbps down and 5Mbps up.

Tests show about an average download of 16Mbps at best (UDP) on the client. Is this simply because I'm running a linux host with Windows clients? Or.....help?

reinaldo.gomes

have you tried downloading the same file from the same server, with the same client, both within and without the OpenVPN? what are the results?

The Johan

Yeah, what reinaldo said; try to figure out if the performance issue is one related to the network connectivity of the host operating system (Windows Server itself). If that already is not able to get a good speed, then the guest OS where Access Server runs almost certainly isn't going to be able to do any better.

rsenio

reinaldo.gomes wrotehave you tried downloading the same file from the same server, with the same client, both within and without the OpenVPN? what are the results?

I'd like to jump back to this. As speed over the VPN isn't what it should be.

If I perform the same file copy while on LAN, from the same client to the same server I am seeing very good speeds. As to be expected.

When performing the same copy over the VPN tunnel, the performance is far from ideal