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How to create a GRE Tunnel in CentOS pointing all connections to server A for the server B?

I have a public server with DDoS protection and need to use this as a firewall to filter acess to the other server.

Example:

users -> server A(DDoS protected) -> server B

All servers have CentOS 6

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    Where do these servers exist in relation to each other, i.e. same VLAN, same internal network, or have to traverse the internet to reach each other? – theterribletrivium Nov 02 '14 at 02:09

1 Answers1

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GRE may not be what you are looking for. You may be better served looking at HTTP Reverse Proxying (ProxyPass), SSH forwarding, D-NAT or other techniques.

That said, there is a tutorial on GRE on CentOS Linux at here.

DTK
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