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hello<br />
<br />
i am using a zywall usg 200 security gateway as the firewall to our network but am having some difficulty with NAT allocation<br />
<br />
everything is working well as it is currently set up but devices like mobile phones cannot get email whilst connected to the wifi here. &nbsp;i believe that this is because &quot;Nat loopback&quot; is not currently enabled.<br />
<br />
when i enable it an error pops up stating that i cannot have the &quot;original IP&quot; in the mapping rule set to any as it might cause a conflict.<br />
<br />
my question is what should the original IP be set to? &nbsp;should it be our public ip address or something.<br />
<br />
<br />
<br />
any help greatly appreciated
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hello

i am using a zywall usg 200 security gateway as the firewall to our network but am having some difficulty with NAT allocation

everything is working well as it is currently set up but devices like mobile phones cannot get email whilst connected to the wifi here.  i believe that this is because "Nat loopback" is not currently enabled.

when i enable it an error pops up stating that i cannot have the "original IP" in the mapping rule set to any as it might cause a conflict.

my question is what should the original IP be set to?  should it be our public ip address or something.



any help greatly appreciated

nat loopback rule on firewall

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.