Services Module shows no open ports but TLS Module shows cert on port 443

[duncangreene]

Describe the bug
Services Module shows no open ports...

...but TLS Module shows information for cert presented on port 443.

To Reproduce
Steps to reproduce the behaviour:

1. Run test against device running HTTPS on port 443. DUT in this case is this.

Expected behaviour
Services Module would show port 443 open.

Error logs
test_result.zip

Environment (please provide the following information about your setup):

• Version: 2.1

Additional context
Only modifications from official 2.1 release are as below.

• resources/test_packs/qualification.json (Set tests to excluded/recommended/informational as appropriate)
• resources/devices/device_profile.json (Add custom questions)

[jhughesbiot]

On review of the logs provided, it appears the nmap scan is not detecting any ports open where the TLS tests directly connect to port 443 without any scan. Is it possible the device has some sort of service or firewall that blocks port scanning?

[duncangreene]

There's no firewall that blocks port scanning per se, and a port scan against this device is available in the potentially related issue #1087.