Adding private IPs

  • Thread starter Thread starter pabloch2
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pabloch2

I have a little LAN with 3 PCs running windows XP Professional with
only one network adapter per PC. They are connected to a switch. Each
PC must use a special application and they must have a different public
IP address (they can not access Internet via NAT with only one external
IP, each IP must be used with only one client)
My ISP gave me a cablemodem. It has a built in DHCP that gives public
and dynamic IP addresses for each PC.
If each PC has a public and dynamic IP ¿How can I connect them
internally in the LAN? I can only think in three possibilities, but I
am not satisfied with any of them

1) I could use the public IPs for the LAN, but I would be exposing
resources to the Internet and I don't know how the name resolution
would work in the LAN.

2) I could use other protocols for the LAN, perhaps IPX or netbeui, but
I refuse to do that, it's a dirty solution.

3) I could add another IP for each adapter. But if I manually add IPs I
can not use the DHCP of the cablemodem. I need one IP assigned by the
DHCP and another one assigned by me.

¿What can be done?
 
You need to check in the cablemodem so as to see if the public IP addresses
can be "forwarded" to the private IP addresses.
 
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