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centos dual ethernet card

I have a server connected to the network from point to point.

After installing a second ethernet card to the server open to the internet via a modem http, ssh, ftp, I want to share, such as ports.

that goal as a base point to point connection to another server, you can access the outside.

Thank you for helping.

Can you be more specific?

You have a server that is connected to a network (internal/no internet?) via PtoP via NIC1.
You have a 2nd NIC in that server connected to the internet?

And now you want to do what, exactly?

You have ftp/httpd/ssh servers running on that server and want access to them? Or do you want port-forwarding, like to another server that is not directly attached to the internet?

Is there a physical firewall in the network, too?

Quote:

Originally Posted by nugat (Post 4793741)

Can you be more specific?

You have a server that is connected to a network (internal/no internet?) via PtoP via NIC1.

yes

You have a 2nd NIC in that server connected to the internet?

yes

And now you want to do what, exactly?

You have ftp/httpd/ssh servers running on that server and want access to them? Or do you want port-forwarding, like to another server that is not directly attached to the internet?

yes

Is there a physical firewall in the network, too?

no

Windows operating system, this process;

priority options for ethernet cards,
The first ethernet card (internal / no internet) set to 10.
second ethernet card (public / internet) set to 100.

worked in this way.

but I want to do it with centos.