Ricoh IS300e Subnet Mask, Default Gateway Address, Access Control and Access Mask

System Settings

❖Subnet Mask

When a fixed IP address is as- signed to this machine on the net- work you use, enter the subnet mask to this item in the form of xxx.xxx.xxx.xxx (xxx:0 through 255).

Do not specify this item manually when you use this machine on a DHCP environment, because this item is automatically assigned to this machine by selecting " DHCP " for [Network Boot].

❖Default Gateway Address

When a fixed IP address is as- signed to this machine on the net- work you use, enter the default gateway address to this item in the form of xxx.xxx.xxx.xxx (xxx:0 through 255).

Do not specify this item manually when you use this machine on a DHCP environment, because this item is automatically assigned to this machine by selecting " DHCP " for [Network Boot].

❖Access Control and Access Mask

Use these setup items together to determine which of client comput- ers has right to access this machine when it works as a network TWAIN scanner.

Each of the client computers is granted or denied its access to this machine by its IP address, which is determined by an access control entry and an access mask entry in combination. An access control en- try is used as a reference value of the IP address, while an access mask entry determines the range of the IP addresses.

•Access control is the value that becomes the reference for re- stricting the client that uses this product as a network TWAIN scanner

•Access mask is the value to specify the restriction range. It is collated (logically multiplied) with access control to limit cli- ents that can use this product as

a network TWAIN scanner. Specify both the access control and the access mask in the form of xxx.xxx.xxx.xxx (xxx:0 through 255).

Note	3
❒ When you want to set no limita-

tion of access to this machine, leave these settings as their de- fault values.

❒ When an IP address of a client computer falls within the logi- cal products of the access con- trol entry and the access mask entry, the client computer is granted its access to this ma- chine.

❒ For example, a client computer that has an IP address within the range shown under “Ac- cess-enabled IP address” col- umn in the following table has right to access this machine, in accordance with the entry of the access mask to the left, when you set the access control to 192.168.15.18. In the following table, “xxx” means any value is available.

Access mask en-	Access-enabled
try	IP address
000.000.000.000	xxx.xxx.xxx.xxx
255.255.000.000	192.168.xxx.xxx
255.255.240.000	192.168.0.xxx
	∼192.168.15.xxx
255.255.255.000	192.168.15.xxx
255.255.255.240	192.168.15.16
	∼192.168.15.31
255.255.255.255	192.168.15.18

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