一般來說很多VPN 連上去以後，
就不能連到外網，
這個教學是為了讓我自己不要忘記如何設定，
連上VPN 以後又可以連到外網同時工作。
如果有任何問題可以寄Mail 給我，歡迎大家討論。
一. 先將原本的 routing 印出，等等會用到
C:Documents and SettingsAdministrator>netstat -r
Route Table
===========================================================================
Interface List
0x1 ……………………… MS TCP Loopback interface
0x2 …00 1f e1 e4 af a2 …… 藍芽 LAN 存取伺服器驅動程式 – Wireless Intermed
ate Driver
0x3 …00 1f 3b 90 11 11 …… Intel(R) Wireless WiFi Link 4965AG – Wireless I
termediate Driver
0x4 …00 1d 72 90 17 1e …… Intel(R) 82566MM Gigabit Network Connection – W
reless Intermediate Driver
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.123.254 192.168.123.10 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.123.0 255.255.255.0 192.168.123.10 192.168.123.10 25
192.168.123.10 255.255.255.255 127.0.0.1 127.0.0.1 25
192.168.123.255 255.255.255.255 192.168.123.10 192.168.123.10 25
224.0.0.0 240.0.0.0 192.168.123.10 192.168.123.10 25
255.255.255.255 255.255.255.255 192.168.123.10 4 1
255.255.255.255 255.255.255.255 192.168.123.10 2 1
255.255.255.255 255.255.255.255 192.168.123.10 192.168.123.10 1
Default Gateway: 192.168.123.254
===========================================================================
Persistent Routes:
None
C:Documents and SettingsAdministrator>
二.連接上 VPN
三.將連接上VPN 後的 routing 印出
C:Documents and SettingsAdministrator>netstat -r
Route Table
===========================================================================
Interface List
0x1 ……………………… MS TCP Loopback interface
0x2 …00 1f e1 e4 af a2 …… 藍芽 LAN 存取伺服器驅動程式 – Wireless Intermedi
ate Driver
0x3 …00 1f 3b 90 11 11 …… Intel(R) Wireless WiFi Link 4965AG – Wireless In
termediate Driver
0x4 …00 1d 72 90 17 1e …… Intel(R) 82566MM Gigabit Network Connection – Wi
reless Intermediate Driver
0x110006 …00 53 45 00 00 00 …… WAN (PPP/SLIP) Interface
===========================================================================
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.1.11.217 10.1.11.217 1
0.0.0.0 0.0.0.0 192.168.123.254 192.168.123.10 2
10.1.11.217 255.255.255.255 127.0.0.1 127.0.0.1 50
10.255.255.255 255.255.255.255 10.1.11.217 10.1.11.217 50
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.123.0 255.255.255.0 192.168.123.10 192.168.123.10 25
192.168.123.10 255.255.255.255 127.0.0.1 127.0.0.1 25
192.168.123.255 255.255.255.255 192.168.123.10 192.168.123.10 25
211.xxx.xxx.xxx 255.255.255.255 192.168.123.254 192.168.123.10 1
224.0.0.0 240.0.0.0 192.168.123.10 192.168.123.10 25
224.0.0.0 240.0.0.0 10.1.11.217 10.1.11.217 1
255.255.255.255 255.255.255.255 10.1.11.217 10.1.11.217 1
255.255.255.255 255.255.255.255 192.168.123.10 2 1
255.255.255.255 255.255.255.255 192.168.123.10 4 1
255.255.255.255 255.255.255.255 192.168.123.10 192.168.123.10 1
Default Gateway: 10.1.11.217
===========================================================================
Persistent Routes:
None
C:Documents and SettingsAdministrator>
四. 先刪除全部的 default route
C:Documents and SettingsAdministrator>route DELETE 0.0.0.0
C:Documents and SettingsAdministrator>
五. 增加對外網路的 default route ( 可參考第一次的 routing , 每個人的對外 gateway 都不同請自行判斷 )
C:Documents and SettingsAdministrator>route add 0.0.0.0 MASK 0.0.0.0 192.168.1
23.254 METRIC 25
C:Documents and SettingsAdministrator>
六.設定 VPN subnet 的 default route ( 可參考第二次的 routing , 每個人的vpn取得的ip與對外 gateway 都可能不同，請自行判斷 )
C:Documents and SettingsAdministrator>route add 10.1.0.0 MASK 255.255.0.0 10.1
.11.217 METRIC 1
C:Documents and SettingsAdministrator>
七. 應該可以同時對外又可以連VPN，可以快樂使用。