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Masquerading Problem?

Hy, i have troubles with my sophos utm. Behind my sophos firewall there is an Windows 2011 SBS. When i try to open OWA from internal network (with public fqdn) connection times out. From internet it works without problems.

The DNS - Resolve from internal network to this host works too.

Is there a problem with masquerading?

Thanks

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0 TheDrew over 10 years ago

Morning,

Accessing a internal server by it's external IP (or FQDN resolving to external IP) requires a full NAT to work properly.

Masquerading is only intended for source NATing connections where you don't know ahead of time which interface will be used for routing the connection.
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0 BarryG over 10 years ago

UTM: Accessing Internal or DMZ servers from Internal Networks using DNAT

I recommend using internal DNS to solve it.

Barry
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