Fuji Xerox DocuCentre S2420 User Manual page 186

9 Tools
IPv4
Sets whether to restrict the IPv4 addresses that can access the machine. When this setting
is enabled, you can register up to 10 IP addresses/subnet masks to support.
IPv6
Sets whether to restrict the IPv6 addresses that can access the machine. When this setting
is enabled, you can register up to 10 IP addresses/subnet masks to support.
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