偽裝 IP 讓網際網路在 VPN 上執行
我在 debian-squeeze 伺服器上設置了一個 pptp VPN 伺服器就好了,我可以從 Windows 7 連接到它,但是 ping 任何外部主機(如 google.com)都失敗了。Ping 10.0.0.1 或 10.0.0.10 按預期工作。
到目前為止,我已經嘗試了很多,但沒有任何幫助。難道我做錯了什麼?
我設置了
pptpd
;ms-dns 8.8.8.8 ms-dns 8.8.4.4 localip 10.0.0.1 remoteip 10.0.0.10-100
增加了 iptable 規則;
iptables -A INPUT -p gre -j ACCEPT iptables -A INPUT -p tcp --dport 1723 -j ACCEPT iptables -A INPUT -i ppp+ -j ACCEPT iptables -A FORWARD -i ppp+ -j ACCEPT iptables -A FORWARD -o ppp+ -j ACCEPT
啟用
net.ipv4.ip_forward=1
於/etc/sysctl.conf
並添加了偽裝;
iptables -t nat -A POSTROUTING -s 10.0.0.0/16 -o ppp0 -j MASQUERADE
有人能發現錯誤嗎?
消息日誌:
Jun 20 15:25:01 server1 pppd[6089]: pppd 2.4.5 started by root, uid 0 Jun 20 15:25:01 server1 pppd[6089]: Using interface ppp0 Jun 20 15:25:01 server1 pppd[6089]: Connect: ppp0 <--> /dev/pts/2 Jun 20 15:25:05 server1 pppd[6089]: local IP address 10.0.0.1 Jun 20 15:25:05 server1 pppd[6089]: remote IP address 10.0.0.10
調試日誌:
Jun 20 15:24:47 server1 pptpd[6053]: CTRL: Reaping child PPP[6054]
ppt日誌:
Jun 20 15:25:01 server1 pptpd[6088]: CTRL: Client 8X.XX.2XX.X4 control connection started Jun 20 15:25:01 server1 pptpd[6088]: CTRL: Starting call (launching pppd, opening GRE) Jun 20 15:25:04 server1 pptpd[6088]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
linux伺服器上的ifconfig:
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:16436 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) ppp0 Link encap:Point-to-Point Protocol inet addr:10.0.0.1 P-t-P:10.0.0.10 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1400 Metric:1 RX packets:156 errors:0 dropped:0 overruns:0 frame:0 TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:16390 (16.0 KiB) TX bytes:137 (137.0 B) venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:127.0.0.2 P-t-P:127.0.0.2 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 RX packets:29264 errors:0 dropped:0 overruns:0 frame:0 TX packets:30152 errors:0 dropped:88 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:4129198 (3.9 MiB) TX bytes:25084183 (23.9 MiB) venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:1X9.XX.1XX.XX9 P-t-P:1X9.XX.1XX.XX9 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1
Windows客戶端上的ipconfig:
PPP adapter Chicago: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 10.0.0.10 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : fe80::dc99:4aef:5221:b5e3%11 IPv4 Address. . . . . . . . . . . : 192.168.1.102 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 Tunnel adapter isatap.{290FC5BA-1A1F-48E5-9FAA-621E96CF4AED}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Teredo Tunneling Pseudo-Interface: Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2001:0:5ef5:79fd:2c53:3789:f5ff:fff5 Link-local IPv6 Address . . . . . : fe80::2c53:3789:f5ff:fff5%13 Default Gateway . . . . . . . . . : :: Tunnel adapter isatap.{A22A1F34-B6D4-4BD7-BCA4-FAECB71D2D14}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . :
tracert -d www.google.com
在客戶端:Tracing route to www.l.google.com [74.125.132.105] over a maximum of 30 hops: 1 117 ms 121 ms 117 ms 10.0.0.1 2 * * * Request timed out. 3 * * * Request timed out.
您沒有推送預設網關
PPP 適配器芝加哥:
連接特定的 DNS 後綴。: IPv4 地址。. . . . . . . . . . :10.0.0.10 子網遮罩。. . . . . . . . . . :255.255.255.255 預設網關。. . . . . . . . : 0.0.0.0
你需要讓它指向 10.0.0.1 而不是 0.0.0.0
如果這仍然不起作用,請嘗試
iptables -t 過濾器 -F
要驗證是否是您的防火牆阻止了流量,請記住規則的順序很重要
編輯:
我看到你的 NAT 線路如下:
iptables -t nat -A POSTROUTING -s 10.0.0.0/16 -o ppp0 -j MASQUERADE
錯了,ppp0是VPN介面,你需要在你的WAN介面上進行NAT。我從不使用那個偽裝的東西……我總是這樣 NAT:
iptables -t nat -A POSTROUTING -j SNAT -s 10.0.0.0/16 –to-source 1X9.XX.1XX.XX9
我猜 1X9.XX.1XX.XX9 是你的公共 IP 地址,否則用那個替換它。