Port 80 blocked - apache

Question

So I've been trying for the past several hours to get my port 80 opened, so that I can access my Apache server. I'm running RHEL 6.5, and below is the configuration for my iptables.
# Generated by iptables-save v1.4.7 on Wed Jul 2 12:59:50 2014
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [9:1332]
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
## Open 443 port i.e. HTTPS
-A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
COMMIT
# Completed on Wed Jul 2 12:59:50 2014
I've saved them and restarted, to no avail. I am using a port checker (http://www.checkmyports.net/) to check if it is open, but it isn't. Before you mark this as a duplicate, I have tried everything online. I've reconfigured my iptables multiple times, removed additional firewalls, disabled and re-enabled, and multiple other solutions, all to no avail. Any ideas on where I'm going wrong? Thanks.
Output of ps aux | grep 'httpd'
:
root 20353 0.0 0.7 175704 3668 ? Ss 12:59 0:00 /usr/sbin/httpd
apache 20355 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20356 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20357 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20358 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20359 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20360 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20361 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
apache 20362 0.0 0.4 175704 2408 ? S 12:59 0:00 /usr/sbin/httpd
root 21624 0.0 0.1 103244 856 pts/0 S+ 13:55 0:00 grep httpd
Output of netstat -tulpn:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 960/rpcbind
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 28361/sshd
tcp 0 0 0.0.0.0:36088 0.0.0.0:* LISTEN 978/rpc.statd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1108/sendmail
tcp 0 0 :::111 :::* LISTEN 960/rpcbind
tcp 0 0 :::80 :::* LISTEN 20353/httpd
tcp 0 0 :::51733 :::* LISTEN 978/rpc.statd
tcp 0 0 :::22 :::* LISTEN 28361/sshd
udp 0 0 0.0.0.0:111 0.0.0.0:* 960/rpcbind
udp 0 0 0.0.0.0:39182 0.0.0.0:* 978/rpc.statd
udp 0 0 0.0.0.0:68 0.0.0.0:* 20708/dhclient
udp 0 0 0.0.0.0:711 0.0.0.0:* 960/rpcbind
udp 0 0 0.0.0.0:730 0.0.0.0:* 978/rpc.statd
udp 0 0 :::111 :::* 960/rpcbind
udp 0 0 :::711 :::* 960/rpcbind
udp 0 0 :::35278 :::* 978/rpc.statd

Answer 1

Ensure there is something running on that port.
If you have port 80 open on your firewall but nothing is listening on that port (apache,http) then the port will show as closed.
Whats the output of
ps aux | grep 'httpd'
and
netstat -tulpn

Answer 2

You could try clearing out iptables entirely, get the web access working, and then turn it back on.
I have an iptables-clear.sh script that I run to do this.
Note this doesn't use the /etc/init.d version of iptables which you might have to turn off while you're fixing this. Just remember to turn it back on once you're done.
# Flush all tables
iptables -F
iptables -t nat -F
# Default policy to ACCEPT
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -t nat -P PREROUTING ACCEPT
iptables -t nat -P POSTROUTING ACCEPT
iptables -t nat -P OUTPUT ACCEPT