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OpenVPN 配置中不存在 ufw eth0，因此无法将其添加到 before.rules 中

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OpenVPN 配置中不存在 ufw eth0，因此无法将其添加到 before.rules 中

在本指南

我被要求编辑/etc/ufw/before.rules并添加：

# START OPENVPN RULES
# NAT table rules
*nat
:POSTROUTING ACCEPT [0:0] 
# Allow traffic from OpenVPN client to eth0
-A POSTROUTING -s 10.8.0.0/8 -o eth0 -j MASQUERADE
COMMIT
# END OPENVPN RULES

问题是这个 vps 没有eth0

root@vps:~# ifconfig -a
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:917 errors:0 dropped:0 overruns:0 frame:0
          TX packets:917 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:304657 (304.6 KB)  TX bytes:304657 (304.6 KB)

tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:10.8.0.1  P-t-P:10.8.0.2  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:1812 errors:0 dropped:0 overruns:0 frame:0
          TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:104145 (104.1 KB)  TX bytes:3072 (3.0 KB)

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:13233 errors:0 dropped:0 overruns:0 frame:0
          TX packets:13936 errors:0 dropped:1855 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:2282467 (2.2 MB)  TX bytes:4621340 (4.6 MB)

venet0:0  Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:17.14.12.9  P-t-P:17.14.12.9  Bcast:17.14.12.9  Mask:255.255.255.255
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1

我试过

# START OPENVPN RULES
# NAT table rules
*nat
:POSTROUTING ACCEPT [0:0] 
# Allow traffic from OpenVPN client to eth0
-A POSTROUTING -s 10.8.0.0/8 -o venet0 -j MASQUERADE
COMMIT
# END OPENVPN RULES

和

# START OPENVPN RULES
# NAT table rules
*nat
:POSTROUTING ACCEPT [0:0] 
# Allow traffic from OpenVPN client to eth0
-A POSTROUTING -s 10.8.0.0/8 -o venet0:0 -j MASQUERADE
COMMIT
# END OPENVPN RULES

但连接后从客户端 ping 时总是超时

PS 假设 17.14.12.9 是一个真实的公共 IP，并且 venet0:0 是具有该 IP 的接口

答案1

-A POSTROUTING -s 10.8.0.0/8 -o venet0 -j MASQUERADE

其中iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o venet0 -j SNAT --to-source X.Y.Z XYZ 是分配给您的 VPS 的实际 IP 地址。（如果这不起作用，请尝试 venet0:0 ）

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