User's Manual

Networking
Address Management
Cisco ISA500 Series Integrated Security Appliance Administrator Guide 153
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- Host: Defines a single host by its IP address. The netmask for a Host
address object will automatically be set to 32-bit (255.255.255.255) to
identify it as a single host. If you choose Host, enter the IP address of the
host in the IP Address field.
- Range: Defines a range of contiguous IP addresses. No netmask is
associated with the Range address object, but internal logic generally
treats each member of the specified range as a 32-bit masked host
object. If you choose Range, enter the starting IP address in the IP
Address field and the ending IP address in the End IP Address field.
- Network: Network address object like the Range object comprises
multiple hosts, but rather than being bound by specified upper and lower
range delimiters, the boundaries are defined by a valid netmask. Network
address objects must be defined by the network’s address and a
corresponding netmask. As a general rule, the first address in a network
(the network address) and the last address in a network (the broadcast
address) are unusable. If you choose Network, enter the subnet IP
address in the IP Address field and the broadcast address in the
Netmask field.
- MAC: Identifies a host by its hardware address or MAC (Media Access
Control) address. MAC addresses are uniquely assigned to wired or
wireless networking devices by their hardware manufacturers. MAC
addresses are 48-bit values that are expressed in 6 byte hex-notation. If
you choose MAC, enter the MAC address in the MAC field.
STEP 4 Click OK to save your settings.
STEP 5 Click Save to apply your settings.
Configuring the Group Addresses
A group address combines with multiple addresses. The security appliance can
support up to 64 group addresses. A group address can include up to 64 address
members.
STEP 1 Click Networking -> Address Object Management.
The Address Object Management window opens. All existing group address
objects are listed in the Group Address table.
STEP 2 In the Group Address Table area, click Add Group to add a new group address.