Assertion: firewall's feature | /r/Desires | optional add-ons
Facets:
value: with others
type: OTHER
Source sentences:
text: Some features are included at no cost with some firewalls, not available at all with some others and require optional add-ons with others (for example, Web caching is included standard with ISA Server, can be added to CheckPoint via an add-on product, must be done “off box” with PIX, and is part of the content filtering service with SonicWall).