OpenVPN speed tweaks for VPS(Windows)

Ramon

10/7/23, 12:01 PM

Background:

I have an OpenVPN server running on my Windows 10 VPS. The Internet connection of VPS is ~750 Mbps for Download and ~450 Mbps for upload (Obtained by multiple speedtest.net tests). The VPS has 2 vCPU and 8 GB RAM. The VPS serves only two clients of OpenVPN. However, the speedtest for clients normally shows 30 Mbps of the test while VPN is enabled.

What I have tried:

Please see the config

Config:

Server

;local a.b.c.d

--duplicate-cn

port 443

;proto tcp

proto udp

sndbuf 393216

rcvbuf 393216

push "sndbuf 393216"

push "rcvbuf 393216"

txqueuelen 4000

tun-mtu 9000 

mssfix 0

fragment 0

;dev tap

dev tun

ca "ca.crt"

cert "ERVER.crt"

key "C:\\SE.key"  # This file should be kept secret

dh "dh.pem"

;topology subnet

server 10.8.0.0 255.255.255.0

ifconfig-pool-persist ipp.txt

;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100

;server-bridge

;push "route 192.168.10.0 255.255.255.0"

;push "route 192.168.20.0 255.255.255.0"

push "redirect-gateway def1 bypass-dhcp"

push "dhcp-option DNS 208.67.222.222"

push "dhcp-option DNS 8.8.8.8"

keepalive 10 120

tls-auth "tls-auth.key" 0 # This file is secret

cipher AES-128-CBC

persist-key

persist-tun

;mute 20

explicit-exit-notify 1

Client

dev tun
proto udp
remote IP 443
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
key-direction 1
cipher AES-128-CBC
verb 3
<ca>
-----BEGIN CERTIFICATE-----
</ca>
<cert>
</cert>
<key>
-----BEGIN PRIVATE KEY-----
</key>
<tls-auth>
</tls-auth>

469

1 + 1

networking

windows

openvpn

bjoster

10/21/23, 4:19 PM

How fast is the internet connection of your VPN clients? OpenVPN is not known for incredible performance, but 80Mbps should be perfectly possible.

Score:0

Server

Ace

10/7/23, 11:16 PM

client
dev tun
remote-cert-tls server

compress
proto udp 
cipher aes-128-cbc
ncp-disable
fast-io

sndbuf 512000
rcvbuf 512000
txqueuelen 2000

pull
nobind
reneg-sec 0
resolv-retry infinite
verb 3
persist-key
persist-tun
remote-random
mute-replay-warnings
route-delay 10

Use UDP for better OpenVPN performance.
Disable compression
Disable cipher negotiation

+ 0

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: OpenVPN speed tweaks for VPS(Windows)

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.