几天前我还在使用 Cisco Anyconnect，一切正常。但现在，它不断以几秒钟为周期连接并重新连接，完全无法使用。我知道这不是服务器的问题，因为我在 Windows 计算机上测试了连接，一切正常。
那么，作为 ubuntu 新手，调试此问题的步骤是什么？
更新 1：
根据@waltinator的建议，我看到了以下内容。这是建立连接和收到重新连接消息之间的部分。
Apr 02 22:15:58 s-ThinkPad-X230 acvpnui[13564]: Message type information sent to the user: Connected to x US Global Remote Access.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: internalReadSocket File: ../../vpn/Common/IPC/UdpTcpTransports_unix.cpp Line: 507 Invoked Function: ::read Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: callbackHandler File: ../../vpn/Common/IPC/SocketTransport.cpp Line: 1861 Invoked Function: CSocketTransport::internalReadSocket Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: OnSocketReadComplete File: ../../vpn/Agent/TlsProtocol.cpp Line: 806 Invoked Function: CSocketTransport::readSocket Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: OnTunnelReadComplete File: ../../vpn/Agent/CstpProtocol.cpp Line: 1466 Invoked Function: CSslProtocol::OnTunnelReadComplete Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: OnTunnelReadComplete File: ../../vpn/Agent/TunnelStateMgr.cpp Line: 1581 Invoked Function: Read tunnel callback status Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer. SSL
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: OnTunnelReadComplete File: ../../vpn/Agent/TlsTunnelMgr.cpp Line: 1891 Invoked Function: CTunnelStateMgr::readTunnel Return Code: -31588336 (0xFE1E0010) Description: SOCKETTRANSPORT_ERROR_TRANSPORT_SHUTDOWN:The socket was shutdown by the operating system or a remote peer. callback
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: The Primary SSL connection to the secure gateway is being re-established.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: Function: OnTunnelStateChange File: ../../vpn/Agent/TND.cpp Line: 2030 tunnel state change notification (new 1, old 1)
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: The VPN client has sent the following close message to the gateway: Reconnecting to recover from error.
Apr 02 22:15:58 s-ThinkPad-X230 acvpnagent[1339]: A SSL Alert was sent by the client during a write operation. Severity: warning Description: close notify
Apr 02 22:15:58 s-ThinkPad-X230 acvpnui[13564]: VPN state: Reconnecting Network state: Network Accessible Network control state: Network Access: Restricted Network type: Undefined
Apr 02 22:15:58 s-ThinkPad-X230 acvpnui[13564]: Message type information sent to the user: Reconnecting to x US Global Remote Access...
有任何线索可以知道是什么问题吗？