User Guide

Page 182 SonicWALL Internet Security Appliance User’s Guide
the interior interface. To the Internet, all of the traffic on the network appears to come from
the same computer.
Nodes
A node is a device, such as a PC or a printer, on a network with an IP address. The
feature chart shows how many node licenses for PCs or printers are included with a
SonicWALL Internet Security appliance. The TELE3 has a non-upgradeable 5-node
license, but the SOHO3 is upgradeable up to have 10, 50, or an unlimited number of
node licenses. The PRO 100, PRO 200, and PRO 300 have an unlimited number of node
licenses.
The TELE3, SOHO3-10, and SOHO3-50 allow a maximum of 5, 10, or 50 LAN IP
addresses, respectively, to exist on the LAN (Local Area Network). The licenses for the
nodes are counted cumulatively, not simultaneously. When the SonicWALL is turned
on and configured, the SonicWALL begins to count IP addresses against the license,
and continues to count new LAN IP addresses accessing the Internet until the appliance
is rebooted.
When a computer or other device connects to the LAN port of the SonicWALL, it is
detected via broadcast and stores the computer or other device IP address in memory.
If 5, 10, or 50 IP addresses have been stored in the SonicWALL, the SonicWALL does
not permit any additional machines to access the Internet. Therefore, the SonicWALL
restricts the number of IP addresses on the LAN, not the number of simultaneous
connections to the Internet.
If you have fewer than the maximum number of computers or other devices on your
LAN, but it appears that the IP license limit is exceeded, download a Tech Support
Report and review the devices with IP addresses. Rogue devices such as printers are
filling up the SonicWALL IP address limit. Tech Support Reports are explained in the
Tools chapter of this manual.
Additionally, computers with two (2) Network Interface Cards (NIC) can take up two
IP addresses. You must reconfigure your network to avoid these problems by turning
off IP forwarding on Windows
®
NT or Windows2000
®
servers using two NICs.
If devices on the LAN receive IP addresses from a DHCP server, see the DHCP chapter
of this manual.
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