Install and configure Nginx as usual, but can't visit website through IP address.
First, I went to Nginx access.log and error.log , I found nothing.
Then I try to use curl to test Nginx wheather can receive the outspace requests
$ curl google.com # It returns nothing!
and I try
$ curl localhost
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
I got the whole Nginx default page!
Obviously, the problem is not came from Nginx itself, it's possible the 80 port had been forbidden.
Then I check /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Tue Dec 9 17:55:22 2014
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [2885:466223]
-A INPUT -p tcp -m tcp --dport 8080 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 8080 -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 -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
# Completed on Tue Dec 9 17:55:22 2014
These two rules only allow packets pass which are matched.
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
$ sudo vi /etc/sysconfig/iptables
add config like below to active the 80 port.
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT