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Dropping traffic from external ip address

I am struggling to get a working firewall rule to drop or reject traffic from an external ip address. My mail server keeps getting hammered by IP addresses it reports as being from Iran. I created a firewall rule at the top position but it isn't having any effect. I thought the system processed from the top down. What am I missing?



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Parents
  • Google couldnt help me find anything about a dead end nat. I will keep looking. As to the destination network, i have tried several things; the destination server address both internal and external and I tried the interface. Are you suggesting it should be the internal lan network object? 

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  • Google couldnt help me find anything about a dead end nat. I will keep looking. As to the destination network, i have tried several things; the destination server address both internal and external and I tried the interface. Are you suggesting it should be the internal lan network object? 

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  • Not a google search but a sophos kba search. I apologise for not being able to assist with more details but the iPad is not a good device for searching or copying links. My main Mac is off being repaired waiting for parts.

    ian

    XG115W - v19.5.1 mr-1 - Home

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

  • I haven't been able to find the article so I guess I will open a support ticket. To be honest I haven't even found knowledge base articles at all, just a lot of articles in no particular order.

  • I am trying to block all traffic that is both coming and going to an internal IP address (this server acts as a router for the network). so far I have tried the following: iptables -A INPUT -s 192.168.1.111 -j DROP & iptables -A OUTPUT -d 192.168.1.111 -j DROP, with 192.168.1.111 being the IP address I am trying to block traffic from. The local area network connects to br0....                Monkey.cool

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