Unfortunately QNAP does not have Root and Intermediate Certificate Bundles, which means that no system software (such as Curl or Wget) can easily access SSL sites.
The following guide, taken partially by Stefan Wienert, allows you to install the complete bundled root certificates.
Connect via SSH to your QNAP NAS and type the following commands:
# cd /share/
# curl https://curl.haxx.se/ca/cacert.pem -O -k
# mkdir certs
# cat cacert.pem | awk 'split_after==1{n++;split_after=0} /-----END CERTIFICATE-----/ {split_after=1} {print > "certs/cert" n ".pem”}'
# cd certs
# for filename in cert*pem;do mv $filename `openssl x509 -hash -noout -in $filename`.0; done;
# cp *.0 /etc/ssl/certs/
I’ve tried in QTOS 4.2.x firmware released in May 2017 and it works perfectly.
