连接到VPNC后无法访问Internet
我正在使用VPNC-client连接到我的office-network 。 它工作正常。
我的机器是ubuntu16.04 。
但是当我连接到VPN ，我无法访问公共互联网或google.com
ifconfig （连接VPN时）
br-1b5f9a5d3ef3 Link encap:Ethernet HWaddr 02:42:02:97:fc:19 inet addr:171.18.0.1 Bcast:0.0.0.0 Mask:255.255.0.0 inet6 addr: fe80::42:2ff:fe97:fc19/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:1202 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:137378 (137.3 KB) docker0 Link encap:Ethernet HWaddr 02:42:e6:dd:41:9c inet addr:172.17.0.1 Bcast:0.0.0.0 Mask:255.255.0.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) enp3s0 Link encap:Ethernet HWaddr 3c:97:0e:52:9c:4b inet addr:192.168.1.124 Bcast:192.168.1.124 Mask:255.255.255.255 inet6 addr: fe80::f45:59f7:5048:911c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:523084 errors:0 dropped:80 overruns:0 frame:0 TX packets:628988 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:212687829 (212.6 MB) TX bytes:247005317 (247.0 MB) Interrupt:19 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:53197 errors:0 dropped:0 overruns:0 frame:0 TX packets:53197 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:5917170 (5.9 MB) TX bytes:5917170 (5.9 MB) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:11.129.222.84 PtP:10.129.222.84 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1412 Metric:1 RX packets:317 errors:0 dropped:0 overruns:0 frame:0 TX packets:1996 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:78204 (78.2 KB) TX bytes:532254 (532.2 KB) wlp2s0 Link encap:Ethernet HWaddr 67:94:23:38:c2:f5 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:2 errors:0 dropped:0 overruns:0 frame:777078 TX packets:1 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:226 (226.0 B) TX bytes:143 (143.0 B) Interrupt:17
路由 （连接VPNC之前）
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 192.168.1.1 0.0.0.0 UG 100 0 0 enp3s0 link-local * 255.255.0.0 U 1000 0 0 br-1b5f9a5d3ef3 182.17.0.0 * 255.255.0.0 U 0 0 0 docker0 182.18.0.0 * 255.255.0.0 U 0 0 0 br-1b5f9a5d3ef3 192.168.1.1 * 255.255.255.255 UH 100 0 0 enp3s0 192.168.1.124 * 255.255.255.255 UH 100 0 0 enp3s0 oo-234.officeweb 192.168.1.1 255.255.255.255 UGH 0 0 0 enp3s0 255.255.255.0 * 255.255.255.255 UH 100 0 0 enp3s0
路由 （VPNC连接后）
kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default * 0.0.0.0 U 0 0 0 tun0 default 192.168.1.1 0.0.0.0 UG 100 0 0 enp3s0 10.129.222.84 * 255.255.255.255 UH 0 0 0 tun0 link-local * 255.255.0.0 U 1000 0 0 br-1b5f9a5d3ef3 182.17.0.0 * 255.255.0.0 U 0 0 0 docker0 182.18.0.0 * 255.255.0.0 U 0 0 0 br-1b5f9a5d3ef3 192.168.1.1 * 255.255.255.255 UH 100 0 0 enp3s0 192.168.1.124 * 255.255.255.255 UH 100 0 0 enp3s0 oo-234.officeweb 192.168.1.1 255.255.255.255 UGH 0 0 0 enp3s0 255.255.255.0 * 255.255.255.255 UH 100 0 0 enp3s0
编辑：1
route （ route del default dev tun0 ）
Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 192.168.1.1 0.0.0.0 UG 100 0 0 enp3s0 default 192.168.43.1 0.0.0.0 UG 600 0 0 wlp2s0 11.12.222.107 * 255.255.255.255 UH 0 0 0 tun0 link-local * 255.255.0.0 U 1000 0 0 br-1b5f9a5d3ef3 171.17.0.0 * 255.255.0.0 U 0 0 0 docker0 172.18.0.0 * 255.255.0.0 U 0 0 0 br-1b5f9a5d3ef3 192.168.1.1 * 255.255.255.255 UH 100 0 0 enp3s0 192.168.1.124 * 255.255.255.255 UH 100 0 0 enp3s0 192.168.43.0 * 255.255.255.0 U 600 0 0 wlp2s0 oo-234.officeweb 192.168.1.1 255.255.255.255 UGH 0 0 0 enp3s0 255.255.255.0 * 255.255.255.255 UH 100 0 0 enp3s0
有些VPN禁止访问互联网（由于安全原因），但在您的情况下，VPN看起来像默认添加路由可能会导致此问题：
default * 0.0.0.0 U 0 0 0 tun0
尝试运行route del default dev tun0 。
您的同事是否有同样的问题？…如果出于安全原因，我宁愿建议为该VPN使用虚拟机。