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RED NAT PUBLIC IP PORT CASE ID : 05887593

support support18



Hi

I have a firewall who is behind an ISP router
The wan port is connected directly to my ISP router via PORT 2 and i've assigned to it a private IP@ 

Now when deploying RED devices , the support asked me to give the Port 2 a public IP@ , wish i don't have , because the ISP gave me only one public IP@ 

What should i do ? is there a nat solution or a port to open in ISP router to make this work ? 

In the picture below the discussions with the sophos support 



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  • 0 in reply to support support18

    RED is connecting to your IP; you are giving in your screenshot. THis has to be an Internet IP or an DNS. 

    You can use DDNS services to have a DNS record, which keeps up 2 date. 

    But You have to configure a NAT on your ISP router, to DNAT the traffic from the router to the firewall. 
    Otherwise this will not work. 

    __________________________________________________________________________________________________________________

  • 0 in reply to support support18

    Sometimes you have a setting on your router to forward packets to a so called „exposed host“. Then you do not have to worry about ports, it just forwards everything to the WAN port of the firewall.

    Mit freundlichem Gruß, best regards from Germany,

    Philipp Rusch

    New Vision GmbH, Germany
    Sophos Silver-Partner

    If a post solves your question please use the 'Verify Answer' button.

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