How to forward OpenVPN Port to NAT'd XEN domU
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John
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Published on 2011-11-24T12:27:26Z
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2012/09/24
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I want to install a OpenVPN domU on XEN. Dom0 and domU are running Debian Squeeze, all domU are on a NAT'd privat network 10.0.0.1/24 My VPN-Gate is von 10.0.0.1 and running. How can I make it accessible under the dom0 public IP?
I tried forwarding the port using iptables, but without any success.
Here is what i did:
~ # iptables -L -n -v
Chain INPUT (policy ACCEPT 1397 packets, 118K bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 930 packets, 133K bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif5.0
0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-in vif5.0 udp spt:68 dpt:67
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif5.0
0 0 ACCEPT all -- * * 10.0.0.1 0.0.0.0/0 PHYSDEV match --physdev-in vif5.0
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif3.0
0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-in vif3.0 udp spt:68 dpt:67
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif3.0
0 0 ACCEPT all -- * * 10.0.0.5 0.0.0.0/0 PHYSDEV match --physdev-in vif3.0
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif2.0
0 0 ACCEPT udp -- * * 0.0.0.0/0 0.0.0.0/0 PHYSDEV match --physdev-in vif2.0 udp spt:68 dpt:67
0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED PHYSDEV match --physdev-out vif2.0
0 0 ACCEPT all -- * * 10.0.0.2 0.0.0.0/0 PHYSDEV match --physdev-in vif2.0
147 8236 ACCEPT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:80
13 546 ACCEPT udp -- eth0 * 0.0.0.0/0 0.0.0.0/0 udp dpt:1194
Chain OUTPUT (policy ACCEPT 1000 packets, 99240 bytes)
pkts bytes target prot opt in out source destination
~ # iptables -L -t nat -n -v
Chain PREROUTING (policy ACCEPT 324 packets, 23925 bytes)
pkts bytes target prot opt in out source destination
139 7824 DNAT tcp -- eth0 * 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 to:10.0.0.5:80
1 42 DNAT udp -- * * 0.0.0.0/0 0.0.0.0/0 udp dpt:1194 to:10.0.0.1:1194
Chain POSTROUTING (policy ACCEPT 92 packets, 5030 bytes)
pkts bytes target prot opt in out source destination
863 64983 MASQUERADE all -- * eth0 0.0.0.0/0 0.0.0.0/0
0 0 MASQUERADE all -- * eth0 0.0.0.0/0 0.0.0.0/0
0 0 MASQUERADE all -- * eth0 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT 180 packets, 13953 bytes)
pkts bytes target prot opt in out source destination
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