问题描述
是的，这个问题已经被问了一百遍了，我到处搜索了，但无济于事。
标题说明了一切。
我有一个OpenVPN服务器(在ubuntu上)，可以通过客户端(Windows 8)连接到它。
当我尝试通过VPN路由所有流量时，问题就开始了。
我在server.conf中添加了push标志：
push "redirect-gateway def1"
push "dhcp-option DNS 8.8.8.8"
当我从客户端连接时，客户端输出：
Wed May 07 21:38:40 2014 SENT CONTROL [StretchVPN-CA]: 'PUSH_REQUEST' (status=1)
Wed May 07 21:38:41 2014 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1,dhcp-option DNS 8.8.8.8,route-gateway <Remote Router IP>,ping 10,ping-restart 120,ifconfig 192.168.0.201 255.255.255.0'
Wed May 07 21:38:41 2014 OPTIONS IMPORT: timers and/or timeouts modified
Wed May 07 21:38:41 2014 OPTIONS IMPORT: --ifconfig/up options modified
Wed May 07 21:38:41 2014 OPTIONS IMPORT: route options modified
Wed May 07 21:38:41 2014 OPTIONS IMPORT: route-related options modified
Wed May 07 21:38:41 2014 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
Wed May 07 21:38:41 2014 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Wed May 07 21:38:41 2014 open_tun, tt->ipv6=0
Wed May 07 21:38:41 2014 TAP-WIN32 device [Local Area Connection 4] opened: \\.\Global\{1F145805-92FC-454E-8FD9-0A6017DD4AD1}.tap
Wed May 07 21:38:41 2014 TAP-Windows Driver Version 9.9
Wed May 07 21:38:41 2014 Notified TAP-Windows driver to set a DHCP IP/netmask of 192.168.0.201/255.255.255.0 on interface {1F145805-92FC-454E-8FD9-0A6017DD4AD1} [DHCP-serv: 192.168.0.0, lease-time: 31536000]
Wed May 07 21:38:41 2014 Successful ARP Flush on interface [35] {1F145805-92FC-454E-8FD9-0A6017DD4AD1}
Wed May 07 21:38:46 2014 TEST ROUTES: 1/1 succeeded len=0 ret=1 a=0 u/d=up
Wed May 07 21:38:46 2014 C:\WINDOWS\system32\route.exe ADD <Remote Router IP> MASK 255.255.255.255 172.20.10.1
Wed May 07 21:38:46 2014 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=25 and dwForwardType=4
Wed May 07 21:38:46 2014 Route addition via IPAPI succeeded [adaptive]
Wed May 07 21:38:46 2014 C:\WINDOWS\system32\route.exe ADD 0.0.0.0 MASK 128.0.0.0 192.168.0.3
Wed May 07 21:38:46 2014 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4
Wed May 07 21:38:46 2014 Route addition via IPAPI succeeded [adaptive]
Wed May 07 21:38:46 2014 C:\WINDOWS\system32\route.exe ADD 128.0.0.0 MASK 128.0.0.0 192.168.0.3
Wed May 07 21:38:46 2014 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4
Wed May 07 21:38:46 2014 Route addition via IPAPI succeeded [adaptive]
Wed May 07 21:38:46 2014 Initialization Sequence Completed
打开连接时，我尝试使用客户端上的标志：
openvpn --config "C:\Program Files\OpenVPN\config\client.ovpn" --redirect-gateway def1 --route-method exe
但是，当我访问whatsmyip.org时，仍然说我的客户ip。
有人遇到过这个问题并设法解决了吗？
非常感谢
最佳办法
我已经使用OpenVPN服务器对此进行了测试，并在客户端和服务器配置中设置了redirect-gateway def1选项。当我访问whatismyip.org时，我会看到我的OpenVPN服务器的IP。以下是我使用的客户端配置：
client
dev tun
proto udp
# THE IP OF THE REMOTE OPENVPN SERVER:
remote ip_address port
resolv-retry infinite
nobind
persist-key
persist-tun
# THE CSR FILE:
pkcs12 certificate.p12
ns-cert-type server
cipher AES-256-CBC
comp-lzo
redirect-gateway def1
verb 3
我还通过将redirect-gateway def1选项附加到openvpn命令进行了测试，并获得了相同的结果。服务器配置为：
port 1194
proto udp
dev tun
dh /etc/openvpn/easy-rsa/keys/dh1024.pem
ca /etc/openvpn/easy-rsa/keys/ca.crt
# ENSURE THE DOMAIN NAME/FILENAME IS CORRECT:
cert /etc/openvpn/easy-rsa/keys/cert.crt
key /etc/openvpn/easy-rsa/keys/cert.key
server 10.5.3.0 255.255.255.0
# YOUR LOCAL SERVER IP HERE:
client-config-dir ccd
route 10.5.3.0 255.255.255.0
ifconfig-pool-persist ipp.txt
cipher AES-256-CBC
comp-lzo
persist-key
persist-tun
status log/openvpn-status.log 5
status-version 2
log-append log/openvpn.log
verb 3 # verbose mode
management localhost port /etc/openvpn/management-password
# ROUTE THE CLIENT'S INTERNET ACCESS THROUGH THIS SERVER:
push "redirect-gateway def1"
push "remote-gateway vpn_server_ip"
push "dhcp-option DNS 8.8.8.8"
keepalive 10 60
次佳办法
也许您忘了修改NAT？以root身份运行这3个命令
命令：
iptables -I FORWARD -i tun0 -o eth0 \
-s 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED \
-j ACCEPT
iptables -t nat -I POSTROUTING -o eth0 \
-s 10.8.0.0/24 -j MASQUERADE
字幕：
-
tun0：您的虚拟VPN网卡
-
eth0：您的普通网卡
-
10.8.0.0：您的VPN网络IP阻止