我不知道该如何提出我的问题,但事情是这样的。
我在 Ubuntu 22.04.3 LTS 上。我有一个 GlobalProtect VPN 配置。我按照这篇文章操作,以便能够从 Ubuntu 的网络管理器进行连接:https://system-administrator.pages.cs.sun.ac.za/globalprotect-openconnect/我安装了该network-manager-openconnect-gnome
软件包并在 Ubuntu 的网络管理器中配置了 VPN。
完成后,我能够连接到 VPN 并通过 SSH 连接到私有网络内的某些服务器。
然后,几天后它突然停止工作了。我仍然可以连接到 VPN,但我无法通过 ssh 连接到我以前使用的服务器,错误信息如下:
ssh: connect to host 172.19.27.13 port 22: No route to host
我以为是 VPN 或服务器本身的问题,但当我尝试从我的 Mac 连接(使用同一个 WiFi)时,却没有任何问题。
我开始认为也许我的 Docker 网络与 VPN 的 IP 范围重叠,因此我停止了服务docker
甚至重新启动了我的 PC,但这没有帮助。
到目前为止我唯一测试过的东西列在下面,但它没有给我任何线索:
$ traceroute 172.19.27.13
traceroute to 172.19.27.13 (172.19.27.13), 64 hops max
1 * 172.19.16.1 65,092ms !H 0,001ms !H
$ ping 172.19.27.13
PING 172.19.27.13 (172.19.27.13) 56(84) bytes of data.
From 172.19.16.1 icmp_seq=1 Destination Host Unreachable
$ nmcli con show --active | grep -i vpn
MyVPN de48b3b6-3caf-422a-a75b-465985493b1f vpn wlo1
vpn0 b3ba4a7b-5104-4809-86a2-ea308b56c36d tun vpn0
$ ip route get 172.19.27.13
172.19.27.13 dev br-633a51729988 src 172.19.16.1 uid 1000
cache
的结果ip route
前连接到VPN:
$ ip route
default via 192.168.50.1 dev wlo1 proto dhcp metric 600
169.254.0.0/16 dev wlo1 scope link metric 1000
172.16.16.0/20 dev br-1995468707f3 proto kernel scope link src 172.16.16.1 linkdown
172.16.32.0/20 dev br-0778c863d099 proto kernel scope link src 172.16.32.1 linkdown
172.16.48.0/20 dev br-df4298cf3f34 proto kernel scope link src 172.16.48.1 linkdown
172.16.64.0/20 dev br-b21e9bd4408a proto kernel scope link src 172.16.64.1 linkdown
172.16.80.0/20 dev br-ab26a099e4af proto kernel scope link src 172.16.80.1 linkdown
172.16.160.0/20 dev br-0809242b5614 proto kernel scope link src 172.16.160.1 linkdown
172.16.176.0/20 dev br-7745b1996e38 proto kernel scope link src 172.16.176.1 linkdown
172.16.224.0/20 dev br-e824a824630d proto kernel scope link src 172.16.224.1 linkdown
172.17.32.0/20 dev br-390ac1b17b4a proto kernel scope link src 172.17.32.1 linkdown
172.17.48.0/20 dev br-aba3c6c7ea81 proto kernel scope link src 172.17.48.1 linkdown
172.17.64.0/20 dev br-fc9f97b6c962 proto kernel scope link src 172.17.64.1 linkdown
172.18.80.0/20 dev br-c7b1780d377a proto kernel scope link src 172.18.80.1 linkdown
172.18.112.0/20 dev br-bad9690b4488 proto kernel scope link src 172.18.112.1 linkdown
172.18.224.0/20 dev br-4739b8f6c565 proto kernel scope link src 172.18.224.1 linkdown
172.18.240.0/20 dev br-57b8ed7e5f78 proto kernel scope link src 172.18.240.1 linkdown
172.19.0.0/20 dev br-345e49d0a9de proto kernel scope link src 172.19.0.1 linkdown
172.19.16.0/20 dev br-633a51729988 proto kernel scope link src 172.19.16.1 linkdown
172.19.32.0/20 dev br-9402f4890bea proto kernel scope link src 172.19.32.1 linkdown
172.19.48.0/20 dev br-f973a49c39f8 proto kernel scope link src 172.19.48.1 linkdown
172.19.64.0/20 dev br-337fb81fa103 proto kernel scope link src 172.19.64.1 linkdown
172.19.80.0/20 dev br-32304ed3e93e proto kernel scope link src 172.19.80.1 linkdown
172.19.96.0/20 dev br-25a1c30e2370 proto kernel scope link src 172.19.96.1 linkdown
172.19.112.0/20 dev br-d41e5b9aaa3f proto kernel scope link src 172.19.112.1 linkdown
172.19.128.0/20 dev br-1591a2081e6c proto kernel scope link src 172.19.128.1 linkdown
172.19.160.0/20 dev br-9224acb921b3 proto kernel scope link src 172.19.160.1 linkdown
172.19.176.0/20 dev br-cde9717fb323 proto kernel scope link src 172.19.176.1 linkdown
172.19.192.0/20 dev br-dfd218450cc9 proto kernel scope link src 172.19.192.1 linkdown
172.19.224.0/20 dev br-1119ec704f95 proto kernel scope link src 172.19.224.1 linkdown
172.19.240.0/20 dev br-3b1afe5dcd39 proto kernel scope link src 172.19.240.1 linkdown
172.20.0.0/20 dev br-3ef61fec14e6 proto kernel scope link src 172.20.0.1 linkdown
172.20.16.0/20 dev br-1ad840df8f05 proto kernel scope link src 172.20.16.1 linkdown
172.20.32.0/20 dev br-ac262d677384 proto kernel scope link src 172.20.32.1 linkdown
172.20.48.0/20 dev docker0 proto kernel scope link src 172.20.48.1 linkdown
172.20.64.0/20 dev br-32b0736cab0b proto kernel scope link src 172.20.64.1 linkdown
172.20.80.0/20 dev br-bdd46d8dd94d proto kernel scope link src 172.20.80.1 linkdown
172.20.96.0/20 dev br-de771380d5d0 proto kernel scope link src 172.20.96.1 linkdown
172.20.128.0/20 dev br-c89e819f4c75 proto kernel scope link src 172.20.128.1 linkdown
172.20.144.0/20 dev br-a41b7066e799 proto kernel scope link src 172.20.144.1 linkdown
172.20.160.0/20 dev br-2df191fb5c5c proto kernel scope link src 172.20.160.1 linkdown
172.22.0.0/16 dev br-650e4ea3a3bf proto kernel scope link src 172.22.0.1 linkdown
172.23.0.0/16 dev br-082e3b5a62c0 proto kernel scope link src 172.23.0.1 linkdown
172.25.0.0/16 dev br-5c28ca91c585 proto kernel scope link src 172.25.0.1 linkdown
172.26.0.0/16 dev br-4f2c13db6831 proto kernel scope link src 172.26.0.1 linkdown
172.27.0.0/16 dev br-82b4239e4105 proto kernel scope link src 172.27.0.1 linkdown
172.28.0.0/16 dev br-7cc44739f78c proto kernel scope link src 172.28.0.1 linkdown
172.29.0.0/16 dev br-7e70216d3f8f proto kernel scope link src 172.29.0.1 linkdown
172.31.0.0/16 dev br-e687be49ba8e proto kernel scope link src 172.31.0.1 linkdown
192.168.0.0/20 dev br-a66dd5b6bf3b proto kernel scope link src 192.168.0.1 linkdown
192.168.16.0/20 dev br-58856c396a34 proto kernel scope link src 192.168.16.1 linkdown
192.168.50.0/24 dev wlo1 proto kernel scope link src 192.168.50.91 metric 600
192.168.64.0/20 dev br-b71cb646f966 proto kernel scope link src 192.168.64.1 linkdown
192.168.80.0/20 dev br-84c7113cab9d proto kernel scope link src 192.168.80.1 linkdown
192.168.96.0/20 dev br-8b729ef36abf proto kernel scope link src 192.168.96.1 linkdown
的结果ip route
后连接到VPN:
$ ip route
default via 192.168.50.1 dev wlo1 proto dhcp metric 600
10.0.0.0/16 dev vpn0 proto static scope link metric 50
10.1.0.0/16 dev vpn0 proto static scope link metric 50
10.2.0.0/16 dev vpn0 proto static scope link metric 50
10.3.0.0/16 dev vpn0 proto static scope link metric 50
10.4.0.0/16 dev vpn0 proto static scope link metric 50
10.5.0.0/16 dev vpn0 proto static scope link metric 50
10.6.0.0/16 dev vpn0 proto static scope link metric 50
10.50.0.32/28 dev vpn0 proto static scope link metric 50
10.50.0.48/28 dev vpn0 proto static scope link metric 50
10.50.0.64/28 dev vpn0 proto static scope link metric 50
10.50.0.104/29 dev vpn0 proto static scope link metric 50
10.50.1.0/24 dev vpn0 proto static scope link metric 50
10.50.3.0/29 dev vpn0 proto static scope link metric 50
10.50.3.56/29 dev vpn0 proto static scope link metric 50
10.50.3.80/29 dev vpn0 proto static scope link metric 50
10.50.3.88/29 dev vpn0 proto static scope link metric 50
10.50.3.112/29 dev vpn0 proto static scope link metric 50
10.50.6.0/28 dev vpn0 proto static scope link metric 50
10.50.6.64/26 dev vpn0 proto static scope link metric 50
10.50.12.0/24 dev vpn0 proto static scope link metric 50
10.50.13.0/24 dev vpn0 proto static scope link metric 50
10.79.1.0/24 dev vpn0 proto static scope link metric 50
10.122.0.0/16 dev vpn0 proto static scope link metric 50
10.125.0.0/16 dev vpn0 proto static scope link metric 50
10.126.0.0/16 dev vpn0 proto static scope link metric 50
10.255.0.0/16 dev vpn0 proto static scope link metric 50
169.254.0.0/16 dev wlo1 scope link metric 1000
172.16.0.0/16 dev vpn0 proto static scope link metric 50
172.16.10.12 dev vpn0 proto static scope link metric 50
172.16.10.13 dev vpn0 proto static scope link metric 50
172.16.16.0/20 dev br-1995468707f3 proto kernel scope link src 172.16.16.1 linkdown
172.16.32.0/20 dev br-0778c863d099 proto kernel scope link src 172.16.32.1 linkdown
172.16.48.0/20 dev br-df4298cf3f34 proto kernel scope link src 172.16.48.1 linkdown
172.16.64.0/20 dev br-b21e9bd4408a proto kernel scope link src 172.16.64.1 linkdown
172.16.80.0/20 dev br-ab26a099e4af proto kernel scope link src 172.16.80.1 linkdown
172.16.160.0/20 dev br-0809242b5614 proto kernel scope link src 172.16.160.1 linkdown
172.16.176.0/20 dev br-7745b1996e38 proto kernel scope link src 172.16.176.1 linkdown
172.16.224.0/20 dev br-e824a824630d proto kernel scope link src 172.16.224.1 linkdown
172.17.32.0/20 dev br-390ac1b17b4a proto kernel scope link src 172.17.32.1 linkdown
172.17.48.0/20 dev br-aba3c6c7ea81 proto kernel scope link src 172.17.48.1 linkdown
172.17.64.0/20 dev br-fc9f97b6c962 proto kernel scope link src 172.17.64.1 linkdown
172.18.0.0/16 dev vpn0 proto static scope link metric 50
172.18.80.0/20 dev br-c7b1780d377a proto kernel scope link src 172.18.80.1 linkdown
172.18.112.0/20 dev br-bad9690b4488 proto kernel scope link src 172.18.112.1 linkdown
172.18.224.0/20 dev br-4739b8f6c565 proto kernel scope link src 172.18.224.1 linkdown
172.18.240.0/20 dev br-57b8ed7e5f78 proto kernel scope link src 172.18.240.1 linkdown
172.19.0.0/20 dev br-345e49d0a9de proto kernel scope link src 172.19.0.1 linkdown
172.19.0.0/16 dev vpn0 proto static scope link metric 50
172.19.16.0/20 dev br-633a51729988 proto kernel scope link src 172.19.16.1 linkdown
172.19.32.0/20 dev br-9402f4890bea proto kernel scope link src 172.19.32.1 linkdown
172.19.48.0/20 dev br-f973a49c39f8 proto kernel scope link src 172.19.48.1 linkdown
172.19.64.0/20 dev br-337fb81fa103 proto kernel scope link src 172.19.64.1 linkdown
172.19.80.0/20 dev br-32304ed3e93e proto kernel scope link src 172.19.80.1 linkdown
172.19.96.0/20 dev br-25a1c30e2370 proto kernel scope link src 172.19.96.1 linkdown
172.19.112.0/20 dev br-d41e5b9aaa3f proto kernel scope link src 172.19.112.1 linkdown
172.19.128.0/20 dev br-1591a2081e6c proto kernel scope link src 172.19.128.1 linkdown
172.19.160.0/20 dev br-9224acb921b3 proto kernel scope link src 172.19.160.1 linkdown
172.19.176.0/20 dev br-cde9717fb323 proto kernel scope link src 172.19.176.1 linkdown
172.19.192.0/20 dev br-dfd218450cc9 proto kernel scope link src 172.19.192.1 linkdown
172.19.224.0/20 dev br-1119ec704f95 proto kernel scope link src 172.19.224.1 linkdown
172.19.240.0/20 dev br-3b1afe5dcd39 proto kernel scope link src 172.19.240.1 linkdown
172.20.0.0/20 dev br-3ef61fec14e6 proto kernel scope link src 172.20.0.1 linkdown
172.20.16.0/20 dev br-1ad840df8f05 proto kernel scope link src 172.20.16.1 linkdown
172.20.32.0/20 dev br-ac262d677384 proto kernel scope link src 172.20.32.1 linkdown
172.20.48.0/20 dev docker0 proto kernel scope link src 172.20.48.1 linkdown
172.20.64.0/20 dev br-32b0736cab0b proto kernel scope link src 172.20.64.1 linkdown
172.20.80.0/20 dev br-bdd46d8dd94d proto kernel scope link src 172.20.80.1 linkdown
172.20.96.0/20 dev br-de771380d5d0 proto kernel scope link src 172.20.96.1 linkdown
172.20.128.0/20 dev br-c89e819f4c75 proto kernel scope link src 172.20.128.1 linkdown
172.20.144.0/20 dev br-a41b7066e799 proto kernel scope link src 172.20.144.1 linkdown
172.20.160.0/20 dev br-2df191fb5c5c proto kernel scope link src 172.20.160.1 linkdown
172.22.0.0/16 dev br-650e4ea3a3bf proto kernel scope link src 172.22.0.1 linkdown
172.22.0.0/16 dev vpn0 proto static scope link metric 50
172.23.0.0/16 dev br-082e3b5a62c0 proto kernel scope link src 172.23.0.1 linkdown
172.25.0.0/16 dev br-5c28ca91c585 proto kernel scope link src 172.25.0.1 linkdown
172.25.3.0/24 dev vpn0 proto static scope link metric 50
172.26.0.0/16 dev br-4f2c13db6831 proto kernel scope link src 172.26.0.1 linkdown
172.27.0.0/16 dev br-82b4239e4105 proto kernel scope link src 172.27.0.1 linkdown
172.28.0.0/16 dev br-7cc44739f78c proto kernel scope link src 172.28.0.1 linkdown
172.29.0.0/16 dev br-7e70216d3f8f proto kernel scope link src 172.29.0.1 linkdown
172.31.0.0/16 dev br-e687be49ba8e proto kernel scope link src 172.31.0.1 linkdown
192.168.0.0/20 dev br-a66dd5b6bf3b proto kernel scope link src 192.168.0.1 linkdown
192.168.6.0/24 dev vpn0 proto static scope link metric 50
192.168.13.0/24 dev vpn0 proto static scope link metric 50
192.168.15.0/24 dev vpn0 proto static scope link metric 50
192.168.16.0/24 dev vpn0 proto static scope link metric 50
192.168.16.0/20 dev br-58856c396a34 proto kernel scope link src 192.168.16.1 linkdown
192.168.17.0/24 dev vpn0 proto static scope link metric 50
192.168.27.0/24 dev vpn0 proto static scope link metric 50
192.168.31.0/24 dev vpn0 proto static scope link metric 50
192.168.32.0/24 dev vpn0 proto static scope link metric 50
192.168.50.0/24 dev wlo1 proto kernel scope link src 192.168.50.91 metric 600
192.168.50.1 dev wlo1 proto static scope link metric 50
192.168.64.0/24 dev vpn0 proto static scope link metric 50
192.168.64.0/20 dev br-b71cb646f966 proto kernel scope link src 192.168.64.1 linkdown
192.168.65.0/24 dev vpn0 proto static scope link metric 50
192.168.71.0/24 dev vpn0 proto static scope link metric 50
192.168.80.0/20 dev br-84c7113cab9d proto kernel scope link src 192.168.80.1 linkdown
192.168.96.0/20 dev br-8b729ef36abf proto kernel scope link src 192.168.96.1 linkdown
193.104.155.113 via 192.168.50.1 dev wlo1 proto static metric 50
我尝试过的:
- 停止
docker
服务 - 重启电脑
- 删除并重新创建 VPN 配置
- 使用不同的 WiFi(本例中为移动连接)
这些都无济于事。
所以我认为问题是 - 它是否真的尝试连接到专用网络,或者它是否尝试在本地某处找到 IP?我该如何调试它?
答案1
我不确定我是否完全理解了你的问题,但是如果你想知道系统“如何”连接到给定的 IP,你可以使用命令
ip route get x.x.x.x
它将显示数据包通过哪个接口(以及哪个网关,如果有的话)路由到 IP 地址x.x.x.x
。以下是我目前正在使用的计算机上的两个示例:
raj@ubu64:~$ ip route get 172.28.200.1
172.28.200.1 dev eth1 src 172.28.200.55
cache mtu 1500 advmss 1460 hoplimit 64
raj@ubu64:~$ ip route get 10.0.0.1
10.0.0.1 via 192.168.137.1 dev eth0 src 192.168.137.44
cache mtu 1500 advmss 1460 hoplimit 64
您可以看到,与 IP 地址的连接通过我的计算机上的接口(具有 IP 地址)172.28.200.1
进行,并且与的连接通过接口(具有 IP 地址)并通过网关进行。eth1
172.28.200.55
10.0.0.1
eth0
192.168.137.44
192.168.137.1
因此,如果您知道 VPN 接口的名称(从ip route
您发布的输出来看vpn0
)或 VPN 隧道本地端的 IP 地址,您就可以识别通过 VPN 的连接。
在您的特定情况下,您想要连接到172.19.27.13
。您的ip route
输出都是前和后连接到 VPN 时,显示 IP 范围172.19.16.0/20
(172.19.27.13
属于该范围)通过接口路由br-633a51729988
(您必须确定此特定接口实际上是什么)。请注意,连接到 VPN 后,这不会改变 - 相同的范围仍通过相同的接口路由。
dev vpn0
通过 VPN 路由的网络是输出中包含的网络ip route
。这些范围不包括地址172.19.27.13
。
我猜想所有这些通过各种br-*
接口路由的 IP 范围都是分配给您的 Docker 容器的范围(抱歉,我没有使用过 Docker,所以我不确定这一点)。这也适用于172.19.27.13
- 它是您的 Docker 子网中的某个地址。
如果您想要172.19.27.13
一些位于 Docker 虚拟网络外部的地址,那么您必须更改 Docker 子网的寻址,以便该地址不落入该范围(这是最佳解决方案),或者 - 作为一种解决方法 - 您需要通过 VPN 接口手动添加到该特定地址的路由。
答案2
就我的情况而言,由于使用的是不同的 VPN,我不再使用 Ubuntu GUI 进行 VPN 设置,现在我只使用命令行操作。不再有问题。