An administrator may attempt to block all networks by specifying "*" or "all" as the network identifier. However, these values are not supported and do not trigger any validation error. Instead, they are silently interpreted as network 0 which results in no networks being blocked at all.
Exploitability
AV:NAC:LPR:HUI:NScope
S:UImpact
C:HI:NA:N4.9/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NOther