Anomalous client working

stojkovic

I have some problems with the client on my desktop: server and configuration should be ok because all is working on my laptop.

I have Windows 7 64 bit and I didn't had any problems since last days.

What is happening is very strange because the vpn seems perfectly working but when I need to receive a large amount of data seems that the data will not arrive:
-opening a small web page works, opening a large web page give me a timeout
-a query that returns few records works, a query that returns 100 records will go in timeout or return just a part of the rows and then timeout
-putty freeze if I try to do "less filename" on a big file.

The problem is 100% local on my computer but I don't know what to do: I tried with firewall disabled, I verified to don't have virus or similar and I don't have installed any program that could create some conflict with Openvpn.

Someone have an idea of what could be the problem here?

Thank you in advance.

maikcat

post your configs please,

possibly MTU related problem.

Michael.

stojkovic

Thank you for the reply. I verified the MTU value and is 1500.

As I said I don't have any problem from my laptop (but I have Windows 8) and the strange thing is that also reinstalling the operative system the result didn't change.

The configuration is:
dev tun
persist-tun
persist-key
proto udp
cipher BF-CBC
tls-client
client
resolv-retry infinite
remote x.x.x.x 1194
tls-remote Server-OVPN-Cert
pkcs12 file.p12
tls-auth file.key 1
comp-lzo

Thanks

maikcat

you can try to use

ping -f -l <size> server

on your Windows 7, vary <size> to find the optimal value.
I'd start out with 1472 , as that is the default for ethernet networks.

If the MTU needs to be lowered then lower it on both ends

Michael.

stojkovic

Thank you I have solved and your help was fundamental.

Was an MTU problem, but the problem was on the router configuration not on the computer.

The strange part was that the laptop worked, and the desktop no: the reason was because the Laptop was connected using WIFI.

Connecting the laptop with wired cable have the same issues.

I'll be curious to know why a problem in the configuration of the WAN can give problems on LAN and not on wireless but I can live also without an answer! :-)

Thank you again and compliments for your avatar that allow me to remember with a bit of nostalgia the Amiga times! :-)

maikcat

Greetings from (rainy) greece.

Thank you I have solved and your help was fundamental.

Was an MTU problem, but the problem was on the router configuration not on the computer.

Im glad that i pointed out to the right direction.

Thank you again and compliments for your avatar that allow me to remember with a bit of nostalgia the Amiga times!

You welcome,I still own and play games on my amiga 500 🙂

regards,
Michael.

Closing topic.