Nmap open ports exploitation

[brightstar0 () live com]

While running an nmap scan over some website it returned the following open ports:

Port State (toggle closed [2] | filtered [0]) Service Reason Product Version Extra info 
53 tcp open domain  syn-ack       
80 tcp open http  syn-ack Apache httpd  2.2.3  (CentOS)  
443 tcp open http  syn-ack Apache httpd  2.2.3  (CentOS)  


How to exploit those specially port 53 and 443?

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