Virtual machines can not access the web service

problem:

　　This Firewall off: they can ping each other the same network segment. However, the machine is unable to access the web page;

solve:

1. First check the firewall state of a virtual machine

　　$firewall-cmd --state

2. Stop the firewall

　　$systemctl stop firewalld.service

　　Prohibition boot: $ systemctl disable firewalld .service

Open port

# firewall-cmd --permanent --add-port=80/tcp

Newly loaded
# firewall-cmd --reload 

$systemctl stop firewalld.service

$systemctl start firewalld.service

 

Note that when the need to modify the firewall settings to see if iptables file exists, there is no unsuccessful;

E.g:

　　# /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT

　　# / Etc / rc.d / init.d / iptables # firewall initialization file