一直在尝试，从来未成功的Debian下用pptp连vpn

odder

贴下配置文件，高手路过请不吝指教。实际上一些选项做过各种组合，都说连接失败

Description=ItsHidden
Connection-Type=pptp
PPTP-Server=vpn.itshidden.com
Use-Peer-DNS=yes
Encrypt-MPPE=no
Encrypt-MPPE-128=yes
Encrypt-MPPE-Stateful=yes
Compress-MPPC=no
Compress-Deflate=yes
Compress-BSD=yes
PPP-Lock=yes
Auth-Peer=no
Refuse-EAP=no
Refuse-CHAP=no
Refuse-MSCHAP=no
MTU=1416
MRU=1416
LCP-Echo-Failure=10
LCP-Echo-Interval=10
PPP-Custom-Options=
Peer-DNS-Over-Tunnel=yes
X-NM-Routes=192.168.0.0/24
Use-Routes=no