The firewall tool is used with text based console or over the ssh session to open port 80 and 443.
Read answer to: "Linux Iptables Setup Firewall For a Web Server"Tagged as:
If sshd is restart will any connections be disconnected 
OpenSuse / Suse Linux Open a Port Range in the Firewall
How to: Allow telnet and ssh through iptables under Linux
APF Linux Firewall Open Port 22 From Specific / Selected IP Address Onlynmap Command: Scan A Single IP Address or Host
PF Firewall Open FTP Port 21 (PASSIVE Configuration)
OpenBSD / FreeBSD / NetBSD: PF Firewall List Rules
Linux Firewall: Display Status and Rules of Iptables FirewallLinux Iptables Setup Firewall For a Web Server 
Linux: Bash Get Time
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