CentOS 7 / RHEL firewalld settings

CentOS 7 has adopted firelwalld by default over the previous iptables, which will require some new steps to configure your firewall:

# new CentOS/RHEL 7 Firewall: (see https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Security_Guide/sec-Using_Firewalls.html )

# create a new service e.g. for webmin:

$ cat /etc/firewalld/services/webmin.xml Webmin Server admin service. Restrict access and do not […]