Motorola Netopia 7000, Руководство администратора

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Administrator’s Handbook
354
TraceRoute
- displays the path to a destination by showing the number of hops and the router
addresses of these hops.
The system log also provides diagnostic information.
☛
NOTE:
Your Ser vice Provider may request information that you acquire from these various diagnostic
tools. Individual tests may be per formed at the command line. (
See “Command Line Inter face”
on page 223. ).
Security
Remote Access Control
You can determine whether or not an administrator or other authorized person has access to configuring
your Gateway. This access can be turned on or off in the Web inter face.
Password Protection
Access to your Motorola Netopia® device can be controlled through two access control accounts,
Admin
or
User
.
• The Admin , or administrative user, per forms all configuration, management or maintenance operations
on the Gateway.
• The
User
account provides monitor capability
only
.
A user may NOT change the configuration, per form upgrades or invoke maintenance functions.
Account usernames can now be changed for the Admin and User accounts.
Network Address Translation (NAT)
The Motorola Netopia® Gateway Network Address Translation (NAT) security feature lets you conceal the
topology of a hard-wired Ethernet or wireless network connected to its LAN inter face from routers on net-
works connected to its WAN inter face. In other words, the end computer stations on your LAN are
invisible
from the Internet.
Only a
single WAN IP address
is required to provide this security suppor t for your entire LAN.
LAN sites that communicate through an Internet Ser vice Provider typically enable NAT, since they usually
purchase only one IP address from the ISP.
• When NAT is ON , the Motorola Netopia® Gateway “proxies” for the end computer stations on your net-
work by pretending to be the originating host for network communications from non-originating networks.
The WAN inter face address is the only IP address exposed.
The Motorola Netopia® Gateway tracks which local hosts are communicating with which remote hosts. It
routes packets received from remote networks to the correct computer on the LAN (Ethernet) inter face.