Eu sou novo em VPNs em geral e gostaria de aprender como fazer isso no Ubuntu seria um ótimo começo Estou usando pptd do gerenciador de rede. Sempre que eu tento conectar-me à vpn que está usando o servidor do Windows, recebo "authenication required" e ele não se conecta. Sob as opções avançadas de PPTP eu tenho MSCHAP MSCHAPV2 verificado assim como MPPE, e sob a segurança eu tenho slects de 128 bits. Para obter mais informações, verifiquei o registro de sys e aqui estão as informações que meu sistema retorna quando tento me conectar.
May 27 15:49:29 austin-ubuntu NetworkManager[973]: <info> Starting VPN service 'pptp'...
May 27 15:49:29 austin-ubuntu NetworkManager[973]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 7139
May 27 15:49:29 austin-ubuntu NetworkManager[973]: <info> VPN service 'pptp' appeared; activating connections
May 27 15:49:29 austin-ubuntu NetworkManager[973]: <info> VPN plugin state changed: init (1)
May 27 15:49:29 austin-ubuntu NetworkManager[973]: <info> VPN plugin state changed: starting (3)
May 27 15:49:30 austin-ubuntu NetworkManager[973]: <info> VPN connection 'Help Desk' (Connect) reply received.
May 27 15:49:30 austin-ubuntu pppd[7143]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded.
May 27 15:49:30 austin-ubuntu pppd[7143]: pppd 2.4.5 started by root, uid 0
May 27 15:49:30 austin-ubuntu pppd[7143]: Using interface ppp0
May 27 15:49:30 austin-ubuntu pppd[7143]: Connect: ppp0 <--> /dev/pts/2
May 27 15:49:30 austin-ubuntu NetworkManager[973]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
May 27 15:49:30 austin-ubuntu NetworkManager[973]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
May 27 15:49:30 austin-ubuntu pptp[7146]: nm-pptp-service-7139 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
May 27 15:49:30 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
May 27 15:49:30 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
May 27 15:49:30 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 60546).
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:953]: send_accm is 00000000, recv_accm is FFFFFFFF
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported!
May 27 15:49:31 austin-ubuntu pppd[7143]: MS-CHAP authentication failed: E=649 No dialin permission
May 27 15:49:31 austin-ubuntu pppd[7143]: CHAP authentication failed
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_disp:pptp_ctrl.c:953]: send_accm is FFFFFFFF, recv_accm is FFFFFFFF
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported!
May 27 15:49:31 austin-ubuntu pppd[7143]: Connection terminated.
May 27 15:49:31 austin-ubuntu avahi-daemon[668]: Withdrawing workstation service for ppp0.
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <warn> VPN plugin failed: 1
May 27 15:49:31 austin-ubuntu NetworkManager[973]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
May 27 15:49:31 austin-ubuntu pptp[7146]: nm-pptp-service-7139 warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
May 27 15:49:31 austin-ubuntu pptp[7146]: nm-pptp-service-7139 warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
May 27 15:49:31 austin-ubuntu pptp[7154]: nm-pptp-service-7139 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <warn> VPN plugin failed: 1
May 27 15:49:31 austin-ubuntu pppd[7143]: Exit.
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <info> VPN plugin state changed: stopped (6)
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <info> VPN plugin state change reason: 0
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <warn> error disconnecting VPN: Could not process the request because no VPN connection was active.
May 27 15:49:31 austin-ubuntu NetworkManager[973]: <info> Policy set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS.
May 27 15:49:37 austin-ubuntu NetworkManager[973]: <info> VPN service 'pptp' disappeared
Qualquer ajuda seria muito apreciada.
Eu localizei meu problema. Mentiu com a linha
MS-CHAP authentication failed: E=649 No dialin permission
Eu conversei com o meu sistema de administração e descobri que eu não tinha as permissões corretas para me conectar ao vpn no lado do servidor windows. Lá vai um par de horas pensando que algo estava errado no meu fim quando não era
Parece ridículo, mas, às vezes, tentativa e erro com configurações diferentes (especialmente autenticação e criptografia) no menu Advanced podem ajudar. Foi assim que eu configurei minha última VPN >. >