Uplink: The physical WAN interface on which the traffic will arrive.LAN IP: The IP address of the server or device that hosts the internal resource that you wish to make available on the WAN.Public IP: The IP address that will be used to access the internal resource from the WAN.Click Add a 1:1 NAT mapping to create a new mapping. Use this option to map an IP address on the WAN side of the MX (other than the WAN IP of the MX itself) to a local IP address on your network. Permitting "" in the rule would only permit and not the TLD or other subdomain of .Īn example configuration is included below: For example, a rule to permit "" would permit any subdomain under such as. This wildcard is not shown on the Dashboard but is visible in syslog messages if syslog is configured for a network. FQDN rules imply a wildcard when no subdomain is used by prepending a * to the domain.tld.The MX may not be able to properly block or allow communications to the web resource in these cases if the client devices do not generate a DNS request for the MX to inspect. This could be due to the client having cached a previous DNS response, or a local statically configured DNS entry on the device. In some cases, a client device may already have IP information about the web resource it is attempting to access.The communication between the client and DNS server cannot be intra-VLAN (this DNS traffic is not snooped). The MX must see the client's DNS request and the server's response in order to learn the proper IP mapping.There are several important considerations for utilizing and testing this configuration: When a client device attempts to access a web resource, the MX will track the DNS requests and response to learn the IP of the web resource returned to the client device. Firmware versions below 13.4 do not support FQDNs in 元 firewall rules.įQDN-based 元 firewall rules are implemented based on snooping DNS traffic. If 元 firewall rules are configured using FQDNs and the MXs firmware version is downgraded to MX 13.3 or earlier, all pieces of the firewall configuration with FQDNs will be removed. Port ranges cannot be entered comma-separated. Multiple ports can be entered comma-separated.
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