# Emercoin daemon setup
sudo su
apt -y install software-properties-common apt-utils dnsutils apt-transport-https curl pkg-php-tools git traceroute mlocate libcurl4-openssl-dev libjansson-dev apache2-ssl-dev bruteforce-salted-openssl
apt-key adv --keyserver keyserver.ubuntu.com --recv B58C58F4
add-apt-repository 'deb http://download.emercoin.com/debian jessie emercoin'
apt update && apt -y install emercoin
echo emcdns=1 >> /etc/emercoin/emercoin.conf
echo emcdnsport=5335 >> /etc/emercoin/emercoin.conf
systemctl enable emercoind
systemctl start emercoind


# EmerSSL server configuration
# Fetch from https://github.com/emercoin/emcssl
cd /var/www/html
git clone https://github.com/emercoin/emcssl
sh /var/www/html/emcssl/WebServer/crt-list.sh > /etc/ssl/certs/emcssl_ca.crt

Take note of the emccoinrpc password in /etc/emercoin/emercoin.conf and configure config and config-lite.php with the right credentials

nano /etc/apache2/sites-available/default-ssl.conf
SSLCACertificatePath /etc/ssl/certs
SSLCACertificateFile /etc/ssl/certs/emcssl_ca.crt

   <Location /emcssl>
    SSLVerifyClient require
    SSLVerifyDepth 1
    SSLOptions +StdEnvVars +ExportCertData
   </Location>

a2enmod ssl
a2ensite default-ssl

service apache2 stop
service apache2 start

UPD Dec, 6, 2020:
I encountered errors on my servers about Post-Handshake Authentication with Mozilla.
To solve add in default-ssl.conf:
        SSLProtocol -all +TLSv1.2 in default-ssl.conf
See more:
https://stackoverflow.com/questions/53062504/apache-2-4-37-with-openssl-1-1-1-cannot-perform-post-handshake-authentication
To summarize: since Firefox 68.0 the support has been implemented, but it is disabled by default and needs to be enabled 
by changing the about:config setting security.tls.enable_post_handshake_auth to true. The reason for this is that TLS 1.3 
post-handshake authentication works with HTTP/1.1 but has problems with HTTP/2 multiplexing, and the necessary mechanism 
to fill the gap for HTTP/2 is still in draft phase.