[Help] Serial access  [SOLVED]

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Fionn
Posts: 19
Joined: 24 May 2022, 23:05

[Help] Serial access

Post by Fionn »

Hi,

I have the F4-210 OS ver: 4.2.34
Is there a way to open a serial connection to the device? It has 2 usb ports and a LAN port from the outside.
Unfortunately I locked myself out :)
It had a 192.168.1.x IP with the built in firewall enabled and blocking everything outside of this range. Now I had to change the IP to 192.168.2.x (gateway/dns as well) and forgot about the rule on the firewall and it was left in enabled state with the old range. Now access is not possible anymore :) During boot I can ping the IP (ssh fails) open the :8181 login page (loading animation only) but thats it. Once the boot is complete all communication is blocked even ping and the loading page :) - Works as designed :)
Good job me :D

Is there a serial port on the device (inside?) any way to get into the device without having to reset? Maybe remove the USB from within change some? setting and put it back in? I have a config backup but would like to avoid to use that as it might be outdated. Data on the device is not at risk (yet).

Thanks for the suggestions.
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crisisacting
Silver Member
Posts: 499
Joined: 20 Jan 2022, 16:42

Re: [Help] Serial access

Post by crisisacting »

If you have a spare Ethernet switch, plug your NAS into it & your PC wired into it as well (nothing else should be wired onto the switch).

You'll need to statically set your PC's Ethernet adapter to be within the 192.168.1.× address range to which your TOS firewall rule was set.

That should allow you to access the NAS GUI, local only.

You'll need to disable that rule & either turn on DHCP (if it was off) or assign a static IP within the new address range, on the network interface of your TNAS; after it's connected to your new network setup & you can access it (change that static IP on your PC back to dynamic assignment), you can update that rule to match your new local address range.
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Fionn
Posts: 19
Joined: 24 May 2022, 23:05

Re: [Help] Serial access

Post by Fionn »

Thank you!
A direct connection is not enough, do I need a switch? As mentioned I see the "loading..." screen in the browser for a bit (and can ping) with a direct connection, until the firewall kicks in, but once the firewall of the NAS is running not even those work.

The issue is that the new ip is already set on the NAS and even tho I set the PC to the old range they will not be able to see each other as the subnet (and mask) is not the same as in the firewall rule.

What i tested is an usb to rj45 adapter and I see the mac address of the adapter on the router however no IP is assigned. I assume dhcp has been turned of (as for any network device) on the NAS, thats why I think the best bet would be some sort of serial/console connection and a cli to disable the fw of the nas.
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TMzethar
TM Support
Posts: 2818
Joined: 27 Oct 2020, 16:43

Re: [Help] Serial access

Post by TMzethar »

F4-210 does not support USB to RJ45 adapters. If you cannot access the NAS directly or through a switch, you may consider resetting the system.
viewtopic.php?t=423
To contact our team, please send email to following addresses, remember to replace (at) with @:
Technical team: support(at)terra-master.com (for technical support)
Service team: service(at)terra-master.com (for purchasing, return, replacement, RMA service)
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Fionn
Posts: 19
Joined: 24 May 2022, 23:05

Re: [Help] Serial access

Post by Fionn »

TMzethar wrote: 17 Apr 2025, 19:17 F4-210 does not support USB to RJ45 adapters. If you cannot access the NAS directly or through a switch, you may consider resetting the system.
viewtopic.php?t=423
Thanks.
I did reset the system (Meth. B) and get the no disk/initialize screen and click on start, after that this is all I have:

Image
Its a 10TB drive don't remember if it has any prior filesystem or data on it, maybe it just gets formatted? Should there be some progress bar and just wait, or is this some error?

Edit: I decided to stop the operation and removed every partition table from the drive so its factory clean (WD100EFAX - supported drive), but still got this white thing only.

Edit2: Since this did not look ok at all, I did stop the operation again and inserted a small 256GB SSD in the hopes to confirm that its just a minor thing and nothing is wrong. Checked with firefox and chromium based browsers on windows and linux. All the same.
Since I removed the 10TB drive I checked if something was changed on the partition tables, but absolutely nothing has been created there after 20+ minutes. I assume the same will be true for the 256GB drive.
Checked with the linux tnas app as well (deb) but this is not able to discover anything even tho I can access via browser and after adding the IP it asks for a user/pass... well... admin/admin did not do the trick :) and also I get some "timeout error" after entering the u/p.

Thanks
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TMzethar
TM Support
Posts: 2818
Joined: 27 Oct 2020, 16:43

Re: [Help] Serial access

Post by TMzethar »

Fionn wrote: 18 Apr 2025, 06:20
Sorry that this might be an error message displayed on the page of F4-210. You can refer to this to fix it.
viewtopic.php?t=5250
To contact our team, please send email to following addresses, remember to replace (at) with @:
Technical team: support(at)terra-master.com (for technical support)
Service team: service(at)terra-master.com (for purchasing, return, replacement, RMA service)
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