System Library Symantec Sygate Enterprise Protection only. The Symantec IPS Library containing preconfigured IPS signatures to help detect and prevent known attacks. System administrators can use the System Library or create custom IPS signatures to be included in custom IPS signature libraries on the Symantec Policy Manager. The System Library is shown using a blue icon in the interface. Symantec periodically provides an updated System Library which is available if your license has Online Subscription. See also customized library, signature library.