Ubuntu
埠轉發 VBox 虛擬機
我有一個執行 VirtualBox 的 Ubuntu Server 14.04 和一些機器。這些機器安裝了 OpenStack Fuel,我無法更改 NIC 介面(兩個 hostonly 和一個 NAT)。
其中一台機器正在執行 Fuel Control 面板,但只能通過 hostonly 介面之一( 10.20.0.2 )訪問。
我的家庭網路是 192.168.25.x。主機(Ubuntu)外部是192.168.25.25。
現在我的家庭網路中有一台 Windows 機器,需要訪問執行在 VM(IP 10.20.0.2)中的 Fuel 面板。
我需要的是將來自硬體 192.168.25.25 介面的傳入轉發到 virtualbox hostonly 10.20.0.X VM 介面以達到 IP 10.20.0.2。
這是我的主機 ifconfig 顯示所有介面:
root@AKRAB:~# ifconfig lo Link encap:Loopback Local inet end.: 127.0.0.1 Masc:255.0.0.0 endereço inet6: ::1/128 Escopo:Máquina UP LOOPBACK RUNNING MTU:65536 Métrica:1 pacotes RX:19685 erros:0 descartados:0 excesso:0 quadro:0 Pacotes TX:19685 erros:0 descartados:0 excesso:0 portadora:0 colisões:0 txqueuelen:0 RX bytes:7674590 (7.6 MB) TX bytes:7674590 (7.6 MB) vboxnet0 Link encap:Ethernet Endereço de HW 0a:00:27:00:00:00 inet end.: 10.20.0.1 Bcast:10.20.0.255 Masc:255.255.255.0 endereço inet6: fe80::800:27ff:fe00:0/64 Escopo:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1 pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0 Pacotes TX:167 erros:0 descartados:0 excesso:0 portadora:0 colisões:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:22260 (22.2 KB) vboxnet1 Link encap:Ethernet Endereço de HW 0a:00:27:00:00:01 inet end.: 172.16.0.254 Bcast:172.16.0.255 Masc:255.255.255.0 endereço inet6: fe80::800:27ff:fe00:1/64 Escopo:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1 pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0 Pacotes TX:437 erros:0 descartados:0 excesso:0 portadora:0 colisões:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:137886 (137.8 KB) vboxnet2 Link encap:Ethernet Endereço de HW 0a:00:27:00:00:02 inet end.: 172.16.1.1 Bcast:172.16.1.255 Masc:255.255.255.0 endereço inet6: fe80::800:27ff:fe00:2/64 Escopo:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1 pacotes RX:0 erros:0 descartados:0 excesso:0 quadro:0 Pacotes TX:464 erros:0 descartados:0 excesso:0 portadora:0 colisões:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:150336 (150.3 KB) wlan0 Link encap:Ethernet Endereço de HW 00:13:46:94:18:c1 inet end.: 192.168.25.25 Bcast:192.168.25.255 Masc:255.255.255.0 endereço inet6: fe80::213:46ff:fe94:18c1/64 Escopo:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Métrica:1 pacotes RX:2354945 erros:0 descartados:4 excesso:0 quadro:0 Pacotes TX:1237088 erros:0 descartados:0 excesso:0 portadora:0 colisões:0 txqueuelen:1000 RX bytes:3455421823 (3.4 GB) TX bytes:103231994 (103.2 MB) root@AKRAB:~#
你可以看到 wlan0 外部介面(我的家庭網路)和 vboxnet0 隱藏我想去的網路( 10.20.0.2 )。
所有這些地址都是靜態的,包括目標。我想在 VM 中訪問的埠號是 8443(Mirantis Fuel Dashboard)。
試過這個沒有成功:
root@AKRAB:~# iptables -I FORWARD -d 10.20.0.2 -m comment --comment "Accept to forward Fuel DashBoard traffic" -m tcp -p tcp --dport 8443 -j ACCEPT root@AKRAB:~# iptables -t nat -I PREROUTING -m tcp -p tcp --dport 8443 -m comment --comment "redirect pkts to virtual machine" -j DNAT --to-destination 10.20.0.2:8443 root@AKRAB:~# iptables -t nat -I POSTROUTING -m comment --comment "NAT the src ip" -d 10.20.0.2 -o vboxnet0 -j MASQUERADE
結果:
root@AKRAB:~# iptables -nvL FORWARD Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination 0 0 ACCEPT tcp -- * * 10.20.0.2 0.0.0.0/0 /* Accept to forward Fuel DashBoard return traffic */ tcp spt:8443 0 0 ACCEPT tcp -- * * 0.0.0.0/0 10.20.0.2 /* Accept to forward Fuel DashBoard traffic */ tcp dpt:8443
和
root@AKRAB:~# iptables -t nat -nvL Chain PREROUTING (policy ACCEPT 73 packets, 6145 bytes) pkts bytes target prot opt in out source destination 18 912 DNAT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:8443 /* redirect pkts to virtual machine */ to:10.20.0.2:8443 Chain INPUT (policy ACCEPT 73 packets, 6145 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 759 packets, 47828 bytes) pkts bytes target prot opt in out source destination Chain POSTROUTING (policy ACCEPT 759 packets, 47828 bytes) pkts bytes target prot opt in out source destination 0 0 MASQUERADE all -- * vboxnet0 0.0.0.0/0 10.20.0.2 /* NAT the src ip */
iptables 規則似乎沒問題,但可能您錯過了啟用 ip 轉發,請嘗試:
echo 1 > /proc/sys/net/ipv4/ip_forward
然後檢查 iptables 規則是否匹配:
iptables -t nat -nvL iptables -nvL FORWARD