Manage Groups And Hosts (Lan Groups) - NETGEAR ProSafe SRX5308 Reference Manual


To edit a secondary LAN IP address:
1. On the LAN Multi-homing screen (see the previous screen), click the Edit button in the
Action column for the secondary IP address that you want to modify. The Edit
Secondary LAN IP address screen displays.
2. Modify the IP address or subnet mask, or both.
3. Click Apply to save your settings.

To delete one or more secondary LAN IP addresses:
1. On the LAN Multi-homing screen (see the previous screen), select the check box to the
left of the secondary IP address that you want to delete, or click the Select All table
button to select secondary IP addresses.
2. Click the Delete table button.

Manage Groups and Hosts (LAN Groups)

The Known PCs and Devices table on the LAN Groups screen (see
contains a list of all known PCs and network devices that are assigned dynamic IP addresses
by the VPN firewall, or have been discovered by other means. Collectively, these entries
make up the network database.
The network database is updated by these three methods:
• DHCP client requests. When the DHCP server is enabled, it accepts and responds to
DHCP client requests from PCs and other network devices. These requests also
generate an entry in the network database. This is an advantage of enabling the DHCP
Server feature.
• Scanning the network. The local network is scanned using Address Resolution Protocol
(ARP) requests. The ARP scan detects active devices that are not DHCP clients.
Note: In large networks, scanning the network might generate unwanted
traffic.
Note: When the VPN firewall receives a reply to an ARP request, it might
not be able to determine the device name if the software firewall of
the device blocks the name.
• Manual entry. You can manually enter information about a network device.
Some advantages of the network database are:
• Generally, you do not need to enter either IP address or MAC addresses. Instead, you
can just select the name of the desired PC or device.
ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308
LAN Configuration
67
Figure 34 on page 68)