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Fortigate loopback nat1/21/2024 ![]() Exampleįor traffic from the WAN or the LAN zones to your web server in the DMZ, you can create a DNAT rule to translate your public IP address (original destination) to the web server's IP address (translated destination). For the destination zone, it uses the zone to which the translated (post-NAT) destination belongs. It then matches the firewall rule based on the source and destination zones, source and destination networks, services, and schedule. Incoming traffic: Sophos Firewall looks up the DNAT rule first to determine the translated (post-NAT) destination. Outgoing traffic: Sophos Firewall applies the firewall rule first and then the SNAT rule.The order in which Sophos Firewall looks up and applies NAT and firewall rules is as follows: ![]() If it doesn't find a matching NAT rule, it allows the traffic to flow but doesn't translate the IP address.įor NAT rules, the matching criteria are the original (pre-NAT) source, destination, and service, and the inbound and outbound interfaces. If Sophos Firewall doesn't find a firewall rule that matches the traffic criteria, it drops the traffic and logs the event. So, you must create firewall rules even if you have created NAT rules. NAT rules translate IP addresses for traffic the firewall rule allows. This setting is useful when troubleshooting.įirewall rules allow or drop traffic entering and exiting the network. To reset the number of times a rule was in use, select Reset usage count.To unlink a rule from the firewall rule, select Unlink rule.To add a rule next to an existing rule, select the action.To edit or delete a rule, select the action.To turn on or turn off a rule, select the switch.So, position the specific rules above the less specific rules.Ĭlick More options to specify the following actions: Once it finds a match for the packet, it doesn't evaluate subsequent rules. Sophos Firewall evaluates rules from the top down until it finds a match. To change the sequence of a rule, click and drag the Rule handle.To delete rules, select the rules and then select Delete.To turn off rules, select the rules and then select Disable.To reset the rule filter, select Reset filter.To hide or show the rule filter, select Disable filter and Enable filter respectively.To see IPv4 or IPv6 rules in the rule table, select IPv4 or IPv6. ![]() The assistant also creates a reflexive SNAT rule (for outbound traffic from the servers), a loopback rule (for internal users accessing the servers), and a firewall rule (to allow inbound traffic to the servers) automatically. Use Server access assistant to create DNAT rules to translate incoming traffic to servers, such as web, mail, SSH, or other servers, and to access remote desktops.
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