Firefox and chromium can't browse the web on a L2TP vpn connection

[piquezino]

Hello everybody !

I'm registered to this forum for explain my problem with the L2TP protocol.

I use Ubuntu 11.10 and I have Internet by a WiFi Hotspot. But a lot of ports are blocked. (FTP, SIP and other...). Therefore, I need to bypass the firewall of the hotspot. I'm suscribed to hidemynet, and I started to configure the VPN.
I downloaded l2tp-ipsec-vpn available on launchpad (I need this software for establish the L2TP/IPSec VPN connection). I entered the connect informations of the ISP, it's good, i'm connected !
I ping google.com (Today, 50% of the pings are lost), I have a access to Skype and apt. but when I launch Firefox, the status of the connection is "Waiting for google.com", such as geektionnerd.net, siteduzero.com execpt perdu.com and monip.org .

How is this done ?

Thanks for your help and your replies.

Cordially,

Alexandre

[piquezino]

Up

[piquezino]

I solved the problem. It's due to the MTU. I configure it with Ifconfig. But I use my Linux desktop as router. Therefore, I must set the MTU on the Windows machines behind my router. it work very fine !