I come from iptables (didn't know it well but enough to get by).  I am trying to learn firewalld now which appears to be much more powerful. First of all I need some help, please. I would like to remove all the rules and zones since I have probably messed up my installation so far and do the following:

I would like to "DROP" all outside traffic I would then  like to  only allow all ports from (2) two IP addresses. Could someone explain to me how to do this.

My configuration only has: (1) one public IP Address (ens3) Thanks in advance. Also, is there a good tutorial that would walk me through learning firewalld?  Thanks again for this as well. Have a great day.

Eric, I wanted to make sure I understand what you are suggesting below: 1. Are you saying to delete all files under /etc/firewalld ?    a. or just firewalld.conf and/or lockdown-whitelist.xm?

2.  Then run the following commands to block out all traffic:  firewall-cmd --set-default-zone=block Will this "DROP" all traffic vs. "REJECT"?

firewall-cmd --permanent --zone trusted --add-source <ip_address>firewall-cmd --reload This will all access to all ports from what ever IP address that I add?

If I also would want to allow pings from anywhere what would I use there?

If I want to allow say ftp from only an IP address would it be added to trusted as well and how would I do that?

I think that will do it for now, thanks again for your help and time. Steve On Monday, November 16, 2020, 12:30:07 PM EST, Eric Garver <egarver(a)redhat.com&gt; wrote: On Mon, Nov 16, 2020 at 02:56:42PM +0000, Steve Frazier wrote: > I come from iptables (didn't know it well but enough to get by).  I am trying to learn firewalld now which appears to be much more powerful. > First of all I need some help, please. > I would like to remove all the rules and zones since I have probably messed up my installation so far and do the following: You can remove the user configuration files in the directories `/etc/firewalld/*/`. Do firewalld.conf or lockdown-whitelist.xml files. > I would like to "DROP" all outside traffic I would then  like to  only allow all ports from (2) two IP addresses. > Could someone explain to me how to do this. 1. Make "block" or "reject" the default zone.     # firewall-cmd --set-default-zone=block 2. Then add your allowlist IPs to the trusted zone which allows   everything.     # firewall-cmd --permanent --zone trusted --add-source <ip_address>     # firewall-cmd --reload > My configuration only has: > (1) one public IP Address (ens3) > Thanks in advance. > Also, is there a good tutorial that would walk me through learning firewalld?  Thanks again for this as well. > Have a great day. The upstream website has some documentation:     https://firewalld.org/documentation/

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