Astrill Setup Manual:How to configure IPSec Cisco with vpnc client on Linux (Ubuntu)

Attention! IPSEC protocol won't be supported by Astrill after 1st January, 2021.

Install vpnc

Update vpnc-script

After vpnc is installed you must replace vpnc-script with new version. Ubuntu vpnc package installs old vpnc-script, which results in following error: Error: either "to" is duplicate, or "ipid" is a garbage.

https://bugs.launchpad.net/ubuntu/+source/vpnc/+bug/805435

Open terminal and then enter the following commands:

   sudo su
   chmod 777 /etc/vpnc
   cd /etc/vpnc
   mv vpnc-script vpnc-script.old
   wget http://tinyurl.com/vpnc-script
   chmod 777 vpnc-script

Download Links for vpnc-script

http://git.infradead.org/users/dwmw2/vpnc-scripts.git/blob_plain/HEAD:/vpnc-script

http://tinyurl.com/vpnc-script

Setup Cisco IPSec

Make sure you are inside "/etc/vpnc" directory, then call the below commands:

   nano example.conf

   IPSec gateway lac.astrill.net
   IPSec ID 
   IPSec secret way2stars
   #IKE Authmode hybrid
   Xauth username enter_your_astrill_username
   Xauth password enter_your_astrill_password

Connect to Astrill Cisco IPSec VPN server

   vpnc example.conf

Done !

Disconnect from vpnc

   vpnc-disconnect

Note:You can repeat step 3 if you wish to create more conf files, so you can connect to other VPN servers locations.