Can't get SSL working with apache2 on Ubuntu server, port 443 seems to not be open

Question

I have ssh access to a server where I want to host my website over https. I am using apache, and so far, the http variant of the site works flawlessly.

It is when trying SSL that things don't work. I cannot load the https site at all. I believe I have narrowed the problem down to the fact that to the outside world, it appears as though port 443 is closed, as can be seen below using nmap.

matthias@outsideworld:~$ nmap domain.com

Starting Nmap 6.47 ( http://nmap.org ) at 2016-03-11 15:13 GMT
Nmap scan report for domain.com (ip.is.here.yes)
Host is up (0.0097s latency).
Not shown: 998 closed ports
PORT   STATE SERVICE
22/tcp open  ssh
80/tcp open  http

Nmap done: 1 IP address (1 host up) scanned in 0.13 seconds

But if I run for example nmap on the server itself through ssh, it looks as though 443 is open,

matthias@server:~$ nmap domain.com

Starting Nmap 6.40 ( http://nmap.org ) at 2016-03-11 15:12 GMT
Nmap scan report for domain.com (ip.is.here.yes)
Host is up (0.00036s latency).
rDNS record for ip.is.here.yes: domain.domain.com
Not shown: 997 closed ports
PORT    STATE SERVICE
22/tcp  open  ssh
80/tcp  open  http
443/tcp open  https

Nmap done: 1 IP address (1 host up) scanned in 0.05 seconds

More details

It looks like apache is definitely listening on 443,

matthias@server:~$ netstat -ln | grep -E ':80|443'
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN

I wouldn't be asking if I wasn't really stumped. I tried opening the port using iptables, but that didn't seem to do anything either, and ufw is disabled. Here is the current iptables --list, but I did try some other configurations of that too to no avail.

matthias@server:~$ sudo iptables --list
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere 

Ah and last but not least, here is the mysite.conf file I am using. And fyi this configuration did correctly serve https when used on a local network using a laptop as an access point.

<VirtualHost *:80>
    <If "req('Host') == '127.0.0.1'" >
        Redirect "/" "https://local.domain.com/"
    </If>
    <ElseIf "req('Host') == 'localhost'" >
        Redirect "/" "https://local.domain.com/"
    </ElseIf>
    <ElseIf "req('Host') == 'domain.com'" >
        #Redirect "/" "https://domain.com/"
    </ElseIf>
    <Else>
            Redirect "/" "https://ap.domain.com/"
    </Else>
</VirtualHost>

IncludeOptional path-to/Local/etc/apache2/vhosts/*.conf
#NameVirtualHost *:443 

<VirtualHost *:443>
    ServerAdmin webmaster@domain.com
    <IfModule mod_ssl.c>
        SSLEngine on
        SSLCertificateFile path-to-cert.crt
        SSLCertificateKeyFile path-to-key.key
    </IfModule>     

    <FilesMatch "\.(cgi|shtml|phtml|php)$">
        SSLOptions +StdEnvVars
    </FilesMatch>
    <Directory /usr/lib/cgi-bin>
        SSLOptions +StdEnvVars
    </Directory>

    BrowserMatch "MSIE [2-6]" \
        nokeepalive ssl-unclean-shutdown \
        downgrade-1.0 force-response-1.0
    BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown

    LogLevel info
    ErrorLog path-to/Local/Log/error.log
    CustomLog path-to/Local/Log/access.log combined

</VirtualHost>

<IfModule mpm_worker_module>
    ServerLimit          40
    StartServers          2
    MaxRequestWorkers   1000
    MinSpareThreads      25
    MaxSpareThreads      75 
    ThreadsPerChild      25
    MaxRequestsPerChild   0
</IfModule>

And all the contents of the 'IncludeOptional/*.conf' files you can see in mysite.conf above,

WSGIDaemonProcess ourapp user=matthias group=matthias processes=2 threads=5
WSGIProcessGroup ourapp
WSGIPassAuthorization On

# The WSGI directory
<Directory path-to/Local/WSGI>
    Options Indexes FollowSymLinks Includes ExecCGI
    AllowOverride All
    Require all granted
    Allow from all
</Directory>

# The Backend Stuff
WSGIScriptAlias /generate_204 path-to/Local/WSGI/backend_204.wsgi
# The Backend Stuff
WSGIScriptAlias /backend path-to/Local/WSGI/backend_db.wsgi
DocumentRoot path-to/website/app

<Directory path-to/website/app>
    Options Indexes FollowSymLinks Includes ExecCGI
    AllowOverride All
    Require all granted
    Allow from all
</Directory>

Alias /rootCA.pem path-to/Local/etc/ssl/certs/rootCA.pem

<Directory path-to/Local/etc/ssl/certs>
    Options Indexes FollowSymLinks Includes ExecCGI
    AllowOverride All
    Require all granted
    Allow from all
</Directory>

Any idea what's going on?

Answer 1

Turns out, it was indeed my ISP which hadn't opened port 443. After that was corrected, the site worked as expected.