Linux Firewall Stop Ping Request | Domain Hosting

Linux Firewall Stop Ping Request

once you install Firewall In linux there are thousands of options and ports which automatically stop by default because the basic features and functions of Firewall of any operating system whether it is freeware or its with price to stop intruding from unauthorize network,each pc now on network use TCP/IP protocol and each computer contain one valid IP address to communicate now due to thousands of risks involved in internet you computer may Hack or easily accessable via Ports of TCP/IP each TCP/IP port contain 65535 connection which can available in this protocol so by default your Computer can be vulnerable due to non availability of Firewal firewall block all potential ports available Under TCP/IP like IGMP PORT which stand Internet group management protocol which also stand sub protocol of TCP/IP and ICMP protocol which use to Echo of Other Networked computer ICMP Stand internet control Messaging protocol by default Firewall block All ICMP request to avoid DDOS Attack,you can stop further port according to your requirements like SMTP port POP Port http port to stop browsing via browser, in linux due to default configuration of blockage of icmp  Ping blocked in this scenario once you ping any domain hosted under this web linux server it seems website(domain) is not accessable but actually Firewall stop this request