They should also take the following steps to harden both web applications and the servers hosting them to reduce the risk of network intrusion via this vector.Use and configure available firewalls to block attacks.Take steps to secure Windows systems, such as installing and configuring Microsoft’s Enhanced Mitigation Experience Toolkit (EMET) and Microsoft AppLocker.Monitor and remove any unauthorized code present in any www directories.Disable, discontinue, or disallow the use of Internet Control Message Protocol (ICMP) and Simple Network Management Protocol (SNMP) as much as possible.Remove unnecessary HTTP verbs from web servers