Allow PPTP VPN connection on firewalld
To allow PPTP VPN connection when using firewalls, run the following commands. Allow 1723/tcp sudo firewall-cmd –permanent –zone=public –add-port=1723/tcp Allow gre protocol…
firewalld
Firewalld
firewall-cmd is used to manage firewall (iptables). It is used by default on latest version of CentOS, RHEL. Check firewall status To…
Firewalld list all open ports
To list all open ports in firealld, run firewall-cmd –list-ports You may need to also use [root@oc1 ~]# firewall-cmd –list-services http https…
Firewalld list rules
To list rules use command firewall-cmd –list-all –zone=public To list all open ports firewall-cmd –list-ports Example [root@centos7 zones]# firewall-cmd –zone=public –add-rich-rule=’rule family=”ipv4″…