403 forbidden on admin page

Hi there,

My NAS runs through a UPS and is set to power down following an outage. There was an outage last night. This morning I turned the machine on but am unable to get to the normal admin login screen located here https://192.168.0.20/cgi-bin

The error is: 403 Forbidden - Your client does not have permission to get URL / from this server.

  • I can ping the IP and I can see the machine in Qfinder
  • I’m not able to see any of my shared drives or services

When I try to login through Qfinder I’m told the password is incorrect (but I’m sure it’s correct).

Disks activity looks to be happening (green lights above drives flashing) and the network light is flashing orange.

I’ve tried rebooting it from the box itself but this had no effect. I tried changing the admin page port to 8080 based on another forum post but this had no effect.

I’m at a loss to know what to do next, any help greatly appreciated, I’ve added my setup details below:

Operating System you are using to access your NAS: Windows 11
NAS model: TVS-471
Firmware Version/Build: 5.2.7.3297
Network Setup: Single

It’s ok. I tried using another machine to access the admin page and was able to.

I looked through the logs and it seems the IP was grabbed by another device whilst the NAS was offline. When I used the browser it had somehow cached the 403 page and wasn’t trying again. When I cleared the cookies from the browser and restarted it I was then able to see the admin page again.

Hope that helps someone in the future.

Uh, never ever never ever never ever use DHCP for the IP address of the NAS.

You should always use a static IP address for things like routers, servers (ie: A NAS), switches, etc.

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Lesson learned. Thanks!

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Technically, there isn’t anything wrong with using DHCP for the NAS, but, you need to know how it is configured.

It is a really good idea to use a static IP. Personally, I set the static IP on the device (server, NAS, etc) and I also put an IP reservation in the router so that if I ever reset the device to factory, or it resets for some other reason, then it will still get the “expected’ IP address. Also, make sure the static IPs used are outsilde the DHCP server assignable range to ensure no conflicy arise.

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That’s actually a really good idea to put in a reservation.