Difference between revisions of "CentOS 7.x Basic firewalld configuration"

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<yambe:breadcrumb>CentOS_7.x_firewalld|CentOS 7.x firewalld</yambe:breadcrumb>
[[Main Page|Home]] > [[CentOS]] > [[CentOS 7.x]] > [[CentOS 7.x system administration|System Administration]] > [[CentOS 7.x firewalld|Firewalld]] > [[CentOS 7.x Basic firewalld configuration]]
=CentOS 7.x Basic firewalld configuration=


To configure basic protection via firewalld use:
To configure basic protection via firewalld use:


# Install firewalld if not present:
#:<pre>
#:: yum -y install firewalld
#:</pre>
# Add '<tt>ZONE=public</tt>' in appropriate ifcfg interface file under '<tt>/etc/sysconfig/network-scripts</tt>' folder
# Add '<tt>ZONE=public</tt>' in appropriate ifcfg interface file under '<tt>/etc/sysconfig/network-scripts</tt>' folder
# Use following for new zone settings to take effect
# Use following for new zone settings to take effect
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<yambe:breadcrumb>CentOS_7.x_firewalld|CentOS 7.x firewalld</yambe:breadcrumb>
[[Main Page|Home]] > [[CentOS]] > [[CentOS 7.x]] > [[CentOS 7.x system administration|System Administration]] > [[CentOS 7.x firewalld|Firewalld]] > [[CentOS 7.x Basic firewalld configuration]]

Latest revision as of 06:34, 25 August 2022

Home > CentOS > CentOS 7.x > System Administration > Firewalld > CentOS 7.x Basic firewalld configuration

To configure basic protection via firewalld use:

  1. Install firewalld if not present: 
    yum -y install firewalld
  2. Add 'ZONE=public' in appropriate ifcfg interface file under '/etc/sysconfig/network-scripts' folder
  3. Use following for new zone settings to take effect 
    systemctl restart network
    

    systemctl restart firewalld
    

    systemctl enable firewalld
  4. Use following to validate that default zone is public 
    firewall-cmd --get-default-zone
  5. Use following syntax to allow certain ports from outside 
    firewall-cmd --zone=public --add-port=25/tcp --permanent
    

    firewall-cmd --zone=public --add-port=80/tcp --permanent
    

    firewall-cmd --zone=public --add-port=443/tcp --permanent
  6. Reload firewalld using 
    firewall-cmd --reload
  7. Check public zone rules using 
    firewall-cmd --zone=public --list-all



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