Ok, I'm new to Sophos UTM, downloaded the Home version recently and wanted to give it a try. I only have a few devices behind the UTM box, one being a Synology NAS. Synology offers a service call QuickConnect that connects through http connections, supposedly not requiring any ports being opened. Anyway, the Synology QuickConnect service does not work behind the UTM, and I believe it's a DNS issue. I don't understand DNS very well, I usually use public DNS servers (8.8.8.8, 8.8.4.4, 208.67.222.222, etc) and things work. However, as I read Sophos' DNS Best Practice post, it indicates there's an internal DNS server separate from the UTM. Am I reading this right, am i supposed to have an internal DNS server setup on a device other than the UTM? Anyway, I followed the Best Practice guidelines through point 3 where I entered the reverse DNS lookup entry under Request Routing, and my Synology still doesn't work. I'm fairly certain there's a DNS error, but I can't figure it out. Other computers behind the UTM are pointed to the UTM as the DNS and are able to resolve names. Any ideas (the helpful kind, please)?
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