Slow OpenVpn

albgen

Hello Everybody,

I can download from my server while connected through the vpn at maximum 1.5Mbs.
Instead on the server i have symmetric 10Mbs.

Any idea what could it be the reason?

Thank you

maikcat

hi there,

you give no info about your setup.. (protocol used/ciphers/hardware specs of the server)

Michael.

albgen

Hi MaikCat,

here it is the server configuration i have used:

port 1194
proto tcp
dev tun
ca ca.crt
cert server.crt
key server.key  
dh dh2048.pem
server 10.8.10.0 255.255.255.0
ifconfig-pool-persist ipp.txt
keepalive 10 120
comp-lzo
max-clients 10
persist-key
persist-tun
status openvpn-status.log
verb 6

thank you

maikcat

hi there,

using blowfish is ok...

tcp is not the optimal choice though..

also what are the hardware specs of your server?

Michael.

albgen

Intel® Xeon® Processor L3426 (8M Cache, 1.86 GHz)
8GB o RAM
fast HD

i dont think it's a hardware problem.

maikcat

no its not.. 😃

albgen

Hello again,

Sorry, but i have not solved this problem.
Any help will be appreciated...

Though i grow fond on openvpn, i'm seriously considering to use IPSec.
These speeds are unacceptable!!

Thank's again

Mimiko

Try to use:

comp-lzo no
cipher no

On the speed influence both partie's hardware performance.

albgen

Hello,

nothing changed with

comp-lzo no

instead

cipher no

is not valid, on the logs i see: Mon Oct 15 14:55:12 2012 Cipher algorithm 'no' not found (OpenSSL)

please note that, during the trasfer process of a file or something within the openvpn tunnel, the cpu for both client and server is less than 3-4% so i dont think it's a cpu problem.

any other idea?

Mimiko

Sorry, its

cipher none

If CPU is not high, then look for connection itself. The routes it might go. May be some proxy limits the speed after a while.

albgen

There is no proxy between clients and openvpn server.
The server has a network card of 10mbit/s and have no limits or traffic quota or other stuff....just 10mbit/s symmetric!

On the same server i have created a pptp connection and during tests i see it's using the whole 10mbits, instead the openvpn is stuck!
I dont know how even to diagnose this... 🙁 🙁

Mimiko

Are you serious about 10mbit on server?

There might be proxies on the path even you don't specify explicitly, or admins does not tell you. You can use IPsec if the speed is better. But try latest version of OpenVPN.

albgen

mimiko, of course i'm serious. 10mbit/s symmetric i have!
I have made a stupid speedtest and i see almost 10mbits in up and down.

i'll try to update openvpn but i doubt it would solve this issue...
Anyway, thank you for your suggestions