You were asking how to open a port in the firewall in your original post, that is done through a init script on Rhel6, that would look something like this.
Code:
/etc/init.d/service-name start
/etc/init.d/service-name start
/etc/init.d/httpd start
Listen 80
Listen 80
Listen 8043
/etc/init.d/httpd restart
:wq!
apachectl configtest