this what we got in scan:

X-Content-Type-Options HTTP Header missing on port 9100.
X-Content-Type-Options HTTP Header missing on port 9100.

Kindly advice how we can address in node_exporter.

Thanks & Regards,
Selvam E.

On Mon, Nov 30, 2020 at 11:12 AM Selvam Elangovan <[email protected]>
wrote:

> however we could still access the endpoint 9100 withhost name in
> webbrowser.
>
> I understand that Strict-Transport-Security is used on web server to
> redirect the http to https by inserting that information in header so that
> the client connect using https instead of http.
>
> How I can justify this with security scanner? any help appreciated.
>
> On Tue, Nov 24, 2020 at 11:09 PM Selvam Elangovan <[email protected]>
> wrote:
>
>> Perfect.  you are spot on.  Thanks for your inputs.  It helps us.
>>
>> Thanks & Regards,
>> Selvam E.
>>
>> On Tue, 24 Nov 2020, 23:00 [email protected], <[email protected]>
>> wrote:
>>
>>> I'm guessing what's happened is:
>>> 1. You've run an (unnamed) security scanner against node_exporter
>>> 2. The scanner has come back with this message, telling you that
>>> node_exporter should return an STS header.
>>>
>>> I'm saying that the scanner's conclusion is wrong.
>>>
>>> Firstly, node_exporter isn't a web server, and you don't connect to it
>>> with a web browser.
>>>
>>> Secondly, I don't know how you have configured node_exporter, but it can
>>> either serve HTTP (default) or HTTPS (*), on one port that you select.  STS
>>> only makes sense for a website which has both HTTP and HTTPS endpoints,
>>> usually on the standard ports 80 and 443.  It tells the browser always to
>>> select the HTTPS endpoint, and to remember this fact.
>>>
>>> node_exporter only provides one or the other, so (1) STS is meaningless,
>>> and (2) this is not a vulnerability in node_exporter.
>>>
>>> If you've configured node_exporter on HTTP, then there's no HTTPS port
>>> for STS to prefer.  If you've configured node_exporter on HTTPS (and of
>>> course configured prometheus to scrape it on HTTPS), then there's no HTTP
>>> port for STS to stop you using.
>>>
>>> Regards,
>>>
>>> Brian.
>>>
>>> (*) TLS is available in node_exporter 1.0.0+: you need to
>>> set --web.config to point to a file which contains the tlsConfig settings.
>>> See https://github.com/prometheus/node_exporter#tls-endpoint
>>>
>>> A sample web.config file would look like this:
>>>
>>> tlsConfig:
>>>   tlsCertPath: /etc/prometheus/ssl/prom_node_cert.pem
>>>   tlsKeyPath: /etc/prometheus/ssl/prom_node_key.pem
>>>
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>>> .
>>>
>>

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