A firewall is a software used by web hosting companies to protect web servers from attacks or unauthorized access. It is very similar to a person’s computer having a “personal” firewall to protect itself from adware/virus/malware. This firewall is at server level to protect the server from external attacks or attempts to bring the server down. The firewall thus protects the server and also the websites hosted under that server. A firewall software is absolutely must for a web hosting company.






