WA000-WWA020 W22 - The Timeout directive must be properly set.
These Timeout requirements are set to mitigate the effects of several types of denial of service attacks. Although there is some latitude concerning the settings themselves, the requirements attempt to provide reasonable limits for the protection of the web server. If necessary, these limits can be adjusted to accommodate the operational requirement of a given system.
Modify the Timeout directive in the applicable Apache configuration files to have a value of 300 seconds or less.