3Com OfficeConnect 3C16771, User Manual, Page: 120 / 182

120 C
HAPTER
4: C
OMMAND
R
EFERENCE
■
Enable One-to-One NAT
Click this check box to enable one-to-one NAT.
■
Private Range Begin
Type the beginning IP address of the private address
range being mapped in the
Private Range Begin box.
This is the IP address of the first machine being made
accessible from the Internet.
Do not include the NAT Public IP Address in any range.
■
Public Range Begin
Type the beginning IP address of the public address
range being mapped in the
Public Range Begin
box.
This address is assigned by the ISP.
■
Range Length
Type the number of IP addresses for the range. The
range length may not exceed the number of valid IP
address. You can add up to 64 ranges. To map a single
address, use a
Range Length
of 1.
Click
Update
. Restart the Internet Firewall for changes to
take effect.
One-to-One NAT does not change the way the firewall
functions work. Access to machines on the LAN from the
Internet is not allowed unless you have set up Network
Access Rules are set, or established Authenticated User
sessions.