Tag Archives: port

HOWTO: firewalld – allowing individual host access

So, you’re rolling out a new webserver and want only certain people to take a look at the content? Here’s how you do it.
CentOS 7.2 is the OS being used.

What zone are you in?
[root@blog-test ~]# firewall-cmd --get-default-zone

OK, let’s make a new zone:

firewall-cmd --permanent --new-zone=blog
systemctl reload firewalld

Now, let’s add your IP & a friends IP to start testing … given you’re using apache & it’s still on port 80:

firewall-cmd --permanent --zone=blog --add-source=YOUR_IP/32
firewall-cmd --permanent --zone=blog --add-source=FRIENDS_IP/32
firewall-cmd --permanent --zone=blog --add-port=80/tcp

NOTE:  If you are using that port in another zone, remove it from that other zone first, because it can’t be in 2 zones at once.

That’s all there is. Move along now.