How to establish VPN Connection using Vodafone K3773 HSPA USB Stick?

Posted by user1889139 on Ask Ubuntu See other posts from Ask Ubuntu or by user1889139
Published on 2013-03-26T13:55:22Z Indexed on 2014/06/06 15:42 UTC
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networking

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vpn

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pptpd

I am using Ubuntu 12.04 Desktop. I am trying to establish VPN PPTP connection to Ubuntu 12.04 Server.

VPN connection available when PC is connected to LAN -> ADSL modem -> Internet -> VPN Server.

No VPN connection available when using 3G modem Vodafone K3773 HSPA USB Stick -> Internet -> VPN Server.

Internet is connected. VPN is not. How to establish the VPN Connection?

Server side log: GRE: Bad checksum from pppd.

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