. License Generator Form. Description The Federal. ipvanquish. Software Activation Configuration Guide, Cisco IOS XE Everest 16. 50,000 Maximum Firewall Connections. Both permanent and time-based keys follow the same process, and you cannot determine the key duration until you attempt to install it. Melalui shell GNS3, open console. x, choose System License. . Tick the I agree with the Terms of the License box.