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I have a NAS box set up and connected to my DG834N router, I use this as an FTP server for access when I'm not at home. This will now only work for a period MAX of 24 hours at a time before I, and others, are unable to gain access whatsoever? Once I reset NAS & router, then access is gained for a further 24 hours until the same happens again. It's driving me nuts!, as this has only happened since moving to O2 (ISP).
Router is set as DHCP, but have limited the IP range to 100 IP's, thus allowing me to set a static IP for the NAS outside of the DHCP range. Has always worked this way long before O2. I use SSL for FTP connection and have forwarded correct ports in router, 2125 (instead of 21), 22, 55536-56559 (Passive), all forwarded to NAS LAN IP. Connecting via my WAN IP (which is Dynamic but never changes) is fine, but only for 24 hours???
QNAP TS-109 Pro NAS
Netgear DG834N (Firmware DGTeam)
*Update*
I just called O2 and explained the problem to them, and they aren't interested. They don't have the technical know how to deal with this I was told, and that I should get a network engineer in to sort it out!
I did tell them that this has only happened since being assigned an IP in the new 93.xx.xx.xx range, dynamic, but has never changed since that was allocated. Problems have all been since then.
I'm now not at home, and pinging my IP gives 'time out' errors, as does a Traceroute, its completely invisible.
I HATE SERVERS!!!
, dunno if its gonna cure the problem, as the new IP is still in the new 93 range, but at least I can change the damn thing, so its a start lol 
worked great for about 2 hours and thought that was it......no changes made whatsoever.
unpingable, invisible and no Fu%%*in connection to this piece of sh*t!!!!
