برای اتصال به VPN در ابونتو Gusty Gibbon این راهنما در اینترنت وجود دارد
http://www.ubuntugeek.com/howto-connect-to-windows-vpn-server-pptp-with-ubuntu-710-gutsy-gibbon.htmlVPN رایگان هم در وبلاگ آقای بهرزوی موجود هست!!
http://reza.behroozi.info/2008/01/vpn-1.htmlخب این ایرور رو میده
VPN Connect Failure
Could not start the VPN connection 'persianadmins vpn' due to a connection error.
و البته این لاگ
sudo tail -f /var/log/syslog
Jan 30 19:56:54 saeed-desktop pptp[6030]: anon log[call_callback:pptp_callmgr.c:78]: Closing connection (call state)
Jan 30 19:56:54 saeed-desktop NetworkManager: <WARN> nm_vpn_service_process_signal(): VPN failed for service 'org.freedesktop.NetworkManager.ppp_starter', signal 'ConnectFailed', with message 'VPN Connection failed'.
Jan 30 19:56:54 saeed-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.ppp_starter' signaled state change 3 -> 5.
Jan 30 19:56:54 saeed-desktop NetworkManager: <WARN> nm_vpn_service_stop_connection(): (VPN Service org.freedesktop.NetworkManager.ppp_starter): could not stop connection 'persianadmins vpn' because service was 5.
Jan 30 19:56:54 saeed-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.ppp_starter' signaled state change 5 -> 6.
Jan 30 19:56:54 saeed-desktop NetworkManager: <debug> [1201710414.373331] nm_dbus_signal_filter(): NetworkManagerInfo triggered update of VPN connection 'persianadmins vpn'
Jan 30 19:56:54 saeed-desktop pppd[6024]: Modem hangup
Jan 30 19:56:54 saeed-desktop pppd[6024]: Connection terminated.
Jan 30 19:56:54 saeed-desktop pppd[6024]: Child process /usr/sbin/pptp 75.127.87.161 --nolaunchpppd (pid 6026) terminated with signal 15
Jan 30 19:56:54 saeed-desktop pppd[6024]: Exit.