Details
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Bug
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Status: Closed
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Major
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Resolution: Won't Fix
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None
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Security Level: Public (Anyone can view this level - this is the default.)
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Description
When users create a VPC, and configure a NAT from a public IP to application in a VM. This VM(applications) are not accessible via public IP for other VMs in the same VPC.
The problem is in the NAT table. If you take a closer look at rules, you will see something like:
-A PREROUTING -d publicIP/32 -i eth1 -p tcp -m tcp --dport 80 -j DNAT --to-destination internalIp:80
The problem is that according to this rule only packets coming via eth1(public interface), will be “redirected” to the internal IP. We need an extra entry to each one of the NAT configurations. For the presented rule, we would need something like:
-A PREROUTING -d publicIP/32 -i eth2 -p tcp -m tcp --dport 80 -j DNAT --to-destination internalIp:80
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