我正在尝试通过网络管理器在以太网上设置 Ubuntu 18 上的 vpn，每当我使用有效凭据连接时，它都会不断要求输入密码，然后提示activation of network connection failed
我尝试重新安装必要的软件包，但没有任何作用。
VPN 是 openvpn
还尝试了 Via cli :error
sudo openvpn pl.ovpn
Wed Dec 18 06:23:53 2019 OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on May 14 2019
Wed Dec 18 06:23:53 2019 library versions: OpenSSL 1.1.1 11 Sep 2018, LZO 2.08
Enter Auth Username: megsbarliso
Enter Auth Password: *****************
Wed Dec 18 06:23:59 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]
Wed Dec 18 06:23:59 2019 Socket Buffers: R=[212992->212992] S=[212992->212992]
Wed Dec 18 06:23:59 2019 UDP link local: (not bound)
Wed Dec 18 06:23:59 2019 UDP link remote: [AF_INET]
Wed Dec 18 06:23:59 2019 TLS: Initial packet from [AF_INET], sid=45a01c11 79e0c228
Wed Dec 18 06:23:59 2019 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Wed Dec 18 06:23:59 2019 VERIFY OK: depth=1, CN=ovpn1.va.pl.net
Wed Dec 18 06:23:59 2019 VERIFY KU OK
Wed Dec 18 06:23:59 2019 Validating certificate extended key usage
Wed Dec 18 06:23:59 2019 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
Wed Dec 18 06:23:59 2019 VERIFY EKU OK
Wed Dec 18 06:23:59 2019 VERIFY OK: depth=0, CN=server
Wed Dec 18 06:24:02 2019 Control Channel: TLSv1.2, cipher TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA
Wed Dec 18 06:24:02 2019 [server] Peer Connection Initiated with [AF_INET]54.83.118.102:1194
Wed Dec 18 06:24:03 2019 SENT CONTROL [server]: 'PUSH_REQUEST' (status=1)
Wed Dec 18 06:24:03 2019 AUTH: Received control message: AUTH_FAILED
Wed Dec 18 06:24:03 2019 SIGTERM[soft,auth-failure] received, process exiting
vcg@vcg-MS-7C13:~$
按照建议，以下命令dpkg -l *network-manager* | grep ii输出以下内容
ii network-manager 1.10.6-2ubuntu1.2 amd64 network management framework (daemon and userspace tools)
ii network-manager-config-connectivity-ubuntu 1.10.6-2ubuntu1.2 all NetworkManager configuration to enable connectivity checking
ii network-manager-gnome 1.8.10-2ubuntu3 amd64 network management framework (GNOME frontend)
ii network-manager-l2tp 1.2.16-1~ubuntu18.04.1~ppa1 amd64 network management framework (L2TP plugin core)
ii network-manager-l2tp-gnome 1.2.16-1~ubuntu18.04.1~ppa1 amd64 network management framework (L2TP plugin GNOME GUI)
ii network-manager-openvpn 1.8.2-1 amd64 network management framework (OpenVPN plugin core)
ii network-manager-openvpn-gnome 1.8.2-1 amd64 network management framework (OpenVPN plugin GNOME GUI)
ii network-manager-pptp 1.2.6-1 amd64 network management framework (PPTP plugin core)
ii network-manager-pptp-gnome 1.2.6-1 amd64 network management framework (PPTP plugin GNOME GUI)
我尝试了一个不需要身份验证的公共 ovpn 文件，这是输出
sudo openvpn USA_135.180.79.35_tcp.ovpn
Thu Dec 19 01:28:44 2019 OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on May 14 2019
Thu Dec 19 01:28:44 2019 library versions: OpenSSL 1.1.1 11 Sep 2018, LZO 2.08
Thu Dec 19 01:28:44 2019 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Thu Dec 19 01:28:44 2019 TCP/UDP: Preserving recently used remote address: [AF_INET]135.180.79.35:1557
Thu Dec 19 01:28:44 2019 Socket Buffers: R=[131072->131072] S=[16384->16384]
Thu Dec 19 01:28:44 2019 Attempting to establish TCP connection with [AF_INET]135.180.79.35:1557 [nonblock]
Thu Dec 19 01:28:45 2019 TCP connection established with [AF_INET]135.180.79.35:1557
Thu Dec 19 01:28:45 2019 TCP_CLIENT link local: (not bound)
Thu Dec 19 01:28:45 2019 TCP_CLIENT link remote: [AF_INET]135.180.79.35:1557
Thu Dec 19 01:28:45 2019 TLS: Initial packet from [AF_INET]135.180.79.35:1557, sid=8ad9b726 45231acc
Thu Dec 19 01:28:46 2019 VERIFY OK: depth=2, C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Certification Authority
Thu Dec 19 01:28:46 2019 VERIFY OK: depth=1, C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
Thu Dec 19 01:28:46 2019 VERIFY OK: depth=0, OU=Domain Control Validated, OU=PositiveSSL Wildcard, CN=*.opengw.net
Thu Dec 19 01:28:46 2019 Control Channel: TLSv1.2, cipher TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA
Thu Dec 19 01:28:46 2019 [*.opengw.net] Peer Connection Initiated with [AF_INET]135.180.79.35:1557
Thu Dec 19 01:28:47 2019 SENT CONTROL [*.opengw.net]: 'PUSH_REQUEST' (status=1)
Thu Dec 19 01:28:48 2019 AUTH: Received control message: AUTH_FAILED
Thu Dec 19 01:28:48 2019 SIGTERM[soft,auth-failure] received, process exiting
答案1
公共 OpenVPN .ovpn 文件可以从以下位置下载https://www.freeopenvpn.org/en/cf/usa.php
有些有效，有些无效。身份验证失败。
联系 VPN 提供商并告诉他们，他们遇到了一些坏的 .ovpn 文件，或者一个或多个坏的服务器。
答案2
我在启用 VPN 时收到同样的错误消息“激活网络连接失败”。原来我之前无意中弄丢了 VPN 配置使用的 .crt 和 .key 文件。