User Manual Part 2

ProSafe Wireless-N VPN Firewall SRXN3205 Reference Manual
11-10 Monitoring System Performance
v1.0, July 2008
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Monitoring Attached Devices
The LAN Groups screen contains a table of all IP devices that the security router has discovered
on the local network. To view the LAN Groups screen:
1. Select Network Configuration from the main menu and LAN Settings in the submenu.
2. Then select the LAN Groups tab and the LAN Groups screen displays.
3. The Known PCs and Devices database is an automatically-maintained list of LAN-attached
devices. PCs and other LAN devices become known by the following methods:
• DHCP Client Requests. By default, the DHCP server in the router is enabled, and will
accept and respond to DHCP client requests from PCs and other network devices. These
requests also generate an entry in the database. Because of this, leaving the DHCP Server
feature enabled (in the LAN Setup menu) is strongly recommended.
• Scanning the Network. The local network is scanned using standard methods such as
ARP. The scan will detect active devices that are not DHCP clients. However, sometimes
the name of the PC or device cannot be accurately determined and will be shown as
unknown.
• Manually Adding Devices. You can enter information in the Add Known PCs and
Devices section and click Add to manually add a device to the database.
Figure 11-4Need new screenshot