nginx is installed but site does not load - linux

Question

I installed LEMP with this tutorial I have done all it says but when I enter my server ip address in my browser it takes some time to load the page and it seems like my browser is doing some processes to load the page but at last the page is blank.
I'v checked all the installation again and they were all installed.
I'v installed apache at the past and I know for apache server if you enter server ip address it shows " apache is functioning " but It's my first time installing nginx ; I want to install DirectAdmin and I don't know nginx is installed or not.
If anyone is familiar with nginx and can help me, I'll be apreciate that.
Update: When I use service nginx status it shows nginx is running.
Update: Flowing are the results of my checkings:
Results of netstat -tulpn | grep :80 :
tcp 0 0 0.0.0.0:80 0.0.0.0:* LIST EN 10302/nginx
Results of ps aux | grep nginx :
nginx 8556 0.0 0.0 222416 3552 ? S 09:04 0:00 php-fpm: pool w ww
nginx 8557 0.0 0.0 222416 3552 ? S 09:04 0:00 php-fpm: pool w ww
nginx 8558 0.0 0.0 222416 3552 ? S 09:04 0:00 php-fpm: pool w ww
nginx 8559 0.0 0.0 222416 3552 ? S 09:04 0:00 php-fpm: pool w ww
nginx 8560 0.0 0.0 222416 3552 ? S 09:04 0:00 php-fpm: pool w ww
root 10302 0.0 0.0 96032 1980 ? Ss 09:11 0:00 nginx: master p rocess /usr/sbin/nginx -c /etc/nginx/nginx.conf
nginx 10304 0.0 0.0 96436 2692 ? S 09:11 0:00 nginx: worker p rocess
nginx 10305 0.0 0.0 96436 2692 ? S 09:11 0:00 nginx: worker p rocess
nginx 10306 0.0 0.0 96436 2660 ? S 09:11 0:00 nginx: worker p rocess
nginx 10307 0.0 0.0 96436 2672 ? S 09:11 0:00 nginx: worker p rocess
root 12564 0.0 0.0 103312 856 pts/0 S+ 09:59 0:00 grep nginx

Answer 1

FIIIIINNNNNNAAAAAALLLLLLLY I Found the problem!
The problem was with my firewall.
If anyone else has the same problem it may be the firewall settings problem like mine So Do the flowing to fix this:
vim /etc/sysconfig/iptables
in the opened file find this line :
-A INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT
Check that --dport 80 is set to the port that you entered in /etc/nginx/conf.d/default.conf if its something else like --dport 22 change it to your default port.
Update:
After you changed the port you should run this code:
service iptables restart
And this is the page shows nginx is running :