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Public IP addresses on internal network not working

Discussion in 'Networking Issues' started by luca2020, Oct 2, 2008.

  1. luca2020

    luca2020 Addicted to LI Member

    Hi there,

    We have just received a new router (WAG200G) and we have set it up as followed:

    NAT = Off, DHCP = Off, Firewall = Off, Router IP = the gateway the ISP gave us x.x.x.129

    Now we have be allocated 16 public IPs, x.x.x.130 to x.x.x.142

    We can't access any of our public IP addresses from the internet, but all of those public IP addresses can get out onto the internet. (E.g. an FTP server is given x.x.x.132 or firewall is x.x.x.131 which allows ping response for testing purposes).

    What could be the issue? We can't even ping the addresses.

  2. wthess

    wthess Addicted to LI Member

    Subnetting is most often the reason for your issue. Make sure the mask on all the devices is identical to the mask on the primary IP.

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