Definition of "firewalling" [firewalling]

• Present participle of firewall. (verb)

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• "Nease said that ProCurve will add similar functionality in the future, but argued that applications such as firewalling, IP telephony and WAN optimisation currently need a processor to themselves."
• "None really account for say, using hardware NAT "firewalling" (or, even true CISCO type technology stateful packet inspecting units as I use from LinkSys) for instance, as an example of what I meant by "perfection" ..."
• "A gateway is a piece of equipment that performs various networking functions, like filtering IP packets ( 'firewalling'), Network Address Translation ( 'NAT'), routing of IP packets across one or more networks ( 'routing'), and serving up IP addresses to clients attached to the network ( 'DHCP')."