How do I keep my NAS from disappearing from my network?

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How do I keep my NAS from disappearing from my network?

Hi folks,

Got a strange problem that's just popped up. Spent the better part of the day trying to troubleshoot. No dice. Thought I'd throw it here to see if anyone has suggestions.

I've got a Synology DS1511+ NAS that is attached to my network via one of the ports on the back of my Apple Time Capsule BaseStation. Here's how the BaseStation is configured:

DHCP with NAT
DCHP Range of 192.168.1.100 to 192.168.1.200
NAS has reserved DHCP of 192.168.1.10 using the MAC address of the device

All of my other network devices (iMac, MBPs, iPads, etc.) connect to the BaseStation wirelessly.

The NAS works just fine for about 10 minutes or so and then disappears from the network. Gone. Just like that! Funny thing is that this device was working perfectly fine (as far as I know) just yesterday.

If I remove (or replace) the reserved DHCP address for the NAS it comes back... for a few minutes and then disappears again.

I'm stumped! I've totally exhausted my network admin skills and have run out of ideas.

Anyone? Bueller???

Thanks in advance!

- Brent

Time Capsule 802.11n (2nd Gen), Mac OS X (10.7.5)

Posted on Oct 4, 2012 4:16 AM

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Answer 1

Paldeng

Level 2

285 points

Oct 4, 2012 5:54 AM in response to brentc123

Im not that good and kinda stupid on that but can you try to put the network drives on the Login items and check? I hope it helps🙂

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Answer 2

brentc123 Author

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Oct 4, 2012 5:57 AM in response to Paldeng

Good idea, friend. But I have already added the drive as well as some folders to my Login items. At present, those items are marked by a yellow triangle with exclamation point. Pretty sure that's NOT a good thing. 😢

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Answer 3

Paldeng

Level 2

285 points

Oct 4, 2012 6:01 AM in response to brentc123

Oh a broken link. The network seems to refresh. By experience we had that problem usually on wifi connetions and not on wired. Im sorry not figuring out the solution. Ill check if can manage to get some insights about that.

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Answer 4

brentc123 Author

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Oct 4, 2012 6:34 PM in response to Paldeng

Another clue...

If I restart the TCBS I can briefly access the NAS... but then it disappears again. 😠

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Answer 5

brentc123 Author

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Oct 9, 2012 4:53 AM in response to brentc123

PROBLEM SOLVED.

The NAS from Synology has its own management program called DSM. The DSM has a Firewall setting. I had turned the Firewall on but specifically allowed the entire range of my network's addresses. But, for some reason, this still seemed to block the network. Once I turned OFF the Firewall I was able to access the NAS without any further problem.

Go figure!

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Answer 6

Jan 30, 2014 3:00 PM in response to brentc123

Disabling the firewall worked for me too, thanks

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Answer 7

Sep 27, 2014 1:43 AM in response to Herouxapps

Guys, disabling the firewall is not a very smart idea. This is especially embedded in your NAS to protect the date from being disrupted or copied by unwanted guests. Maybe a little late to the party here, but I experienced the very same issue recently when swapping the router to a newer model.
What resolved the issue was to re-set the port forwarding in the DSM of my synology NAS. Go into configuration and select external access. In this section click on the tab router configuration. Then select router settings and allow the DSM to make changes to your router's port forwarding settings. Do not forget to click on save before leaving the DSM. Good luck!

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