General and Network Sett ings Page 77
•NAT with L2TP Client mode uses IPSec to connect a L2TP server and encrypts all data
transmitted from the client to the server. However, it does not encrypt network traffic to other
destinations.
•NAT with PPTP Client mode uses Point to Point Tunneling Protocol (PPTP) to connect to a remote
server. It supports older Microsoft implementations requiring tunneling connectivity.
LAN Settings
•SonicWALL LAN IP Address
The SonicWALL LAN I P A d dres s is th e IP ad dr ess as si gned to th e S oni cWAL L LA N por t. I t i s use d
for managing the SonicWALL. Thi s IP addr ess shou ld be a uniq ue addr ess from th e LAN addr ess
range.
•LAN Subnet Mask
The LAN Subnet Mask defines which IP addresses are on the LAN. The default Class C subnet
mask of "255.255.255.0" su ppor ts up t o 25 4 IP add res ses on the LA N. I f the Class C s ub net
mask is used, all local area network addresses should contain the same first three num bers as
the SonicWALL LAN I P Address--for example, "192 .168.168."
Multiple LAN Subnet Mask Support
Alert This feature does not replace or substitute configuring routes with the Routes tab in the
Advanced section of the SonicWA LL. If yo u h ave to defi ne a subnet on t he oth er sid e of a rou ter, yo u
must define a static route using th e Routes tab in the Advanced section.
Multiple LAN Subne t Ma sk Su pport facilitates the support of leg ac y ne tw ork s i nco rporating the
SonicWALL, and makes it easier to add additional nodes if the original subnet is full. Before you can
configure multiple local LAN subn ets in th e Son ic W ALL , yo u m ust ha v e the foll ow i ng inform a t ion :
•Network Gateway Address - This is an IP address assigned to the SonicWALL in addition to the
existing LAN IP address. If you have configured your SonicWALL in Standard mode, the IP
address should be the Default Gateway IP address assigned to your Internet router on the same
subnet. All users o n the s ubnet yo u are con figur ing must use this IP addr ess as t heir def ault
router/gateway address.
•Subnet Mask - This value defines the size, and based upon the Network Gateway entry, the
scope of the subnet. If you are configuring a subnet ma sk that currently exists on the LA N, enter
the existing subnet mask address into the Subnet Mask fiel d. If you are c onfi guring a new subn et
mask, use a subnet ma sk that does not overlap any prev iously defined subnet masks.
Alert The SonicWALL cannot be managed from any of the additional Network Gateway addresses.
You must use the IP address set as the LAN IP address of the SonicWALL. Also, you cannot mix
Standard and NAT subnets behind the SonicWALL.