at first the config looks good, I assume you have ssh enabled
ssh in the machine :
- do
wget --no-check-certificate https://127.0.0.1:8443
orcurl -k https://127.0.0.1:443
(post the content) - watch open connections and see if it's an actual apache process behind it (
sudo netstat -anp | grep 8443
orsudo lsof | grep ":8443"
) - is your config not overrided else where
- check your config is valid (what's the output of the
/etc/init.d/apache2 restart
) - check the apache error/request logs if you see your traces or other errors
From your laptop :
- try a nmap with this machine as target, and see if the port appear as filtered
- are you sure the dns is ok (tried with the ip address ?)
Give this book a try, it's awesome to learn new troubleshooting technics.