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LAN Configuration
91
ProSafe Gigabit Quad WAN SSL VPN Firewall SRX5308
To edit a secondary LAN IP address:
1. On the LAN Multi-homing screen for IPv4 (see the previous figure), click the Edit button
in the Action column for the secondary IP address that you want to modify. The Edit
LAN Multi-homing screen displays.
2. Mo
dify the IP address or subnet mask, or both.
3. Click App
ly to save your settings.
To delete one or more secondary LAN IP addresses:
1. On th
e LAN Multi-homing screen for IPv4 (see the previous figure), select the check box
to the left of each secondary IP address that you want to delete, or click the Select All
table button to select secondary IP addresses.
2. Click the Del
ete table button.
Manage IPv4 Groups and Hosts (IPv4 LAN Groups)
• Manage the Network Database
• Change Group Names in the Network Database
• Set Up DHCP Address Reservation
The Known PCs and Devices table on the LAN Groups (IPv4) screen (see Figure 5
2 on
page 93) contains a list of all known computers and network devices that are assigned
dynamic IP addresses by the VPN firewall, have been discovered by other means, or were
entered manually. Collectively, these entries make up the network database.
The network database is updated by these methods:
• DHCP client
requests. When the DHCP server is enabled, it accepts and responds to
DHCP client requests from computers and other network devices. These requests also
generate an entry in the network database. This is an advantage of enabling the DHCP
server feature.
• Sca
nning 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.