TOS constantly downloading

[sanctimon]

Hi all,

I have a F5-221 set with the following servers on it:

Nextcloud_okm
and
Jellyfin_okm

the rest of the unit is used for simple smb/afp storage.

Whenever I log into the TOS I see the machine is constantly downloading at high speed.

I cannot identify the process that consumes this bandwidth, as there are no tools to do so. There is also no way for me to compile/install another application, such as nethogs, as "make" is not available in TOS.

Any ideas how I can identify if this is a legitimate application using bandwidth or if the machine has been compromised?

[TWlhq]

{L_BUTTON_AT}sanctimon

Please go to Control Panel - System Information to check the progress.

[sanctimon]

Sorry, I cannot find anything there of use. Would you mind posting a screenshot?

[TMSupport]

[sanctimon]

Thank you, but this does not show network usage, only CPU usage. My issue, if you can check my screenshot, is that a certain process starts using net resources, not CPU resources.

I am looking for that process.

[TMSupport]

You can check the CPU resources to judge, if your application is downloading something, it will occupy relative system resources.

[sanctimon]

I am sorry, but I do not know that this is correct.

There is no direct correlation between high CPU usage and high bandwidth usage.

This is easily demonstrable by using iperf or any other similar network test that takes bandwidth usage to the limit without making the CPU sweat even a little bit.

What is also problematic with TNAS is that the netdata utility that could have shown more information has not been updated by TerraMaster since v. 1.16 (we are now at 1.36). This is very frustrating.