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Forum Replies

  1. Hi Boris,

    You need extendable if you map an inside address to multiple outside IP addresses, like this:

    ip nat inside source static 192.168.1.1 1.2.3.4 extendable
    ip nat inside source static 192.168.1.1 5.6.7.8 extendable
    

    Where 192.168.1.1 is the inside address and 1.2.3.5 / 5.6.7.8 are outside addresses. Cisco IOS will add the keyword automatically.

    You also need it for port forwarding where you use the same inside and outside addresses for different port numbers:

    ip nat inside source static tcp 192.168.1.1 80 1.2.3.4 80 extendable
    ip nat inside source static
    ... Continue reading in our forum

  2. Hi Rene

    Can we use maybe route map if we need open more ports for one IP address, what is very often case for CCTV.

    Regards

  3. Hi Boris,

    No need for a route-map, you can repeat this command as often as you need:

    ip nat inside source static tcp 192.168.12.1 80 192.168.23.2 80 extendable

    Just change the ports required and that’s it.

    Rene

  4. Hi,

    What if I want to do static nat for multiple web servers. Let us say, we have 3 web servers with private IP address that i want to connect from a public IP. How can we do that as the port number is used once only?

    Thank you for your support.

    Akram

  5. Hi Molenaar, why in the image i see Fa1/0 and the saved configuration we have FastEthernet0/1, could it be a typo?

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