CNET Printer/Fax/Scanner/Copier appendix Subnet Mask, Default Gateway Address, For Network Boot

				System Settings
❖ Subnet Mask		•	Access mask is the value to
When a fixed IP address is as-			specify the restriction range. It
signed to this machine on the net-			is collated (logically multiplied)
work you use, enter the subnet			with access control to limit cli-
mask to this item in the form of			ents that can use this product as
xxx.xxx.xxx.xxx (xxx:0 through			a network TWAIN scanner.
255).		Specify both the access control and
Do not specify this item manually		the access mask in the form of
when you use this machine on a		xxx.xxx.xxx.xxx (xxx:0 through
DHCP environment, because this		255).
item is automatically assigned to			Note
this machine by selecting " DHCP "					3
		❒ When you want to set no limita-
for [Network Boot].
❖ Default Gateway Address			tion of access to this machine,
			leave these settings as their de-
When a fixed IP address is as-			fault values.
signed to this machine on the net-		❒ When an IP address of a client
work you use, enter the default			computer falls within the logi-
gateway address to this item in the			cal products of the access con-
form of xxx.xxx.xxx.xxx (xxx:0			trol entry and the access mask
through 255).			entry, the client computer is
Do not specify this item manually			granted its access to this ma-
when you use this machine on a			chine.
DHCP environment, because this		❒ For example, a client computer
item is automatically assigned to
			that has an IP address within
this machine by selecting " DHCP "
			the range shown under “Ac-
for [Network Boot].
			cess-enabled IP address” col-
❖ Access Control and Access Mask			umn in the following table has
Use these setup items together to			right to access this machine, in
			accordance with the entry of the
determine which of client comput-
			access mask to the left, when
ers has right to access this machine
			you set the access control to
when it works as a network
			192.168.15.18. In the following
TWAIN scanner.
			table, “xxx” means any value is
Each of the client computers is
			available.
granted or denied its access to this
machine by its IP address, which is
			Access mask en-	Access-enabled
determined by an access control			try	IP address
entry and an access mask entry in
			000.000.000.000	xxx.xxx.xxx.xxx
combination. An access control en-
try is used as a reference value of			255.255.000.000	192.168.xxx.xxx
the IP address, while an access
			255.255.240.000	192.168.0.xxx
mask entry determines the range				∼
of the IP addresses.				192.168.15.xxx
			255.255.255.000	192.168.15.xxx
• Access control is the value that
			255.255.255.240	192.168.15.16
becomes the reference for re-
				∼192.168.15.31
stricting the client that uses this
product as a network TWAIN			255.255.255.255	192.168.15.18
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