Hi,
Here are the some important services on cPanel based server and with its respective configuration file and port number that service uses.
The cpanel configuration file
Configuration file : cpanel.config
Path : /var/cpanel/cpanel.config
Service : cpanel
Apache – The web server
Default Port : #80
Configuration file : httpd.conf
Path : /etc/httpd/conf/httpd.conf Or /usr/local/apache/conf/httpd.conf
Service : httpd
Exim – The mail server
Configuration file : exim.conf
Path : /etc/exim.conf
Service : exim
Bind – The name server
Default Port : 53
Configuration file : named.conf
Path : /etc/named.conf
Service : named
DB location : /var/named
FTP server
proftp
Default Port : 20, 21
Configuration file : proftpd.conf
Path : /etc/proftpd.conf
Service : proftpd
pureftp
Default Port : 20, 21
Configuration file : pure-ftpd.conf
Path : /etc/pure-ftpd.conf
Service : pure-ftpd
MySQL – DB
Default Port : 3306
Configuration file : my.cnf
Path : /etc/my.cnf
Service : mysql
PHP
Configuration file : php.ini
Path : /usr/local/lib/php.ini (php –ini : to find conf location)
Networking Setup
/etc/sysconfig/network
/etc/hosts – Host entries
/etc/resolv.conf – Resolver Configuration
/etc/nameserverips – Nameserver IPs
clamav – The antivirus configuration file
Configuration file : clamav.conf
Path : /etc//etc/clamav.conf
Service : clamd