OpenVPN Support Forum

I am connecting to a openvpn server that I administer that is about 140ms away. It is UDP tunneling. On windows 7 I always get 2.5Mbps Down and about 5 UP. On winxp however I cannot get it over .7 down and 5 up. Is there a way I can tune winxp for a faster experience with openvpn.

it's very hard to tell what is going on:
* same network on the client side, only change is Win7->WinXP?
* what kind of antivirus/defender type programs are running on both
* exact same OpenVPN version on both (incl 32bit)?
* exact same OpenVPN configuration on both?
* what does your config look like exactly?

OpenVPN on XP performs as good as it does on Win7 in most cases, but third-party programs can screw up performance .

Both Windows machines are running AVG. I tried to uninstall it but it didn't make any difference. The WinXP machine is a bare minimum install. I though their maybe some tcp tweaking I can do to remedy this. It seams that everyone I have connecting to this server with WINXP get the same slow downloads but fast uploads issue. Config is below.

client
dev tun
fast-io
proto udp
pull
resolv-retry infinite
nobind
persist-key
persist-tun
ca "ca.crt"
cert "client2010.crt"
key "client2010.key"
ns-cert-type server
tls-auth "ta.key" 1
comp-lzo
verb 3
cipher DES-EDE3-CBC # Triple-DES

hi there,

tcp tweak?
you use udp in your config..

if you believe that the cipher is causing delays try using the default (blowfish),
AES (Rijndael)is also faster than 3DES.

also you dont mention hardware specs of the xp based pc..

ps: how do you measure speed?

cheers,

michael.