Watchguard Firebox SOHO 6 Wireless, Руководство пользователя, Страница: 27 / 208

User Guide 5
How does the SOHO 6 Wireless process information?
How does the SOHO 6 Wireless process
information?
Services
A service is the group of protocols and port numbers for a
specified program or type of application. The standard
configuration of the SOHO 6 Wireless contains the correct settings
for many standard services.
Network Address Translation
All connections from the trusted network to the external network
through a SOHO 6 Wireless use dynamic NAT. Dynamic NAT
prevents that private IP addresses from your trusted network are
sent through the Internet.
The SOHO 6 Wireless replaces the private IP addresses with the
public IP address to protect the trusted network. Each packet sent
through the Internet contains IP address information. Packets sent
through the SOHO 6 Wireless with Dynamic NAT include only the
public IP address of the SOHO 6 Wireless and not the private IP
address of the computer in the trusted network. Because only the
IP address of the SOHO 6 Wireless is sent to the external network,
unauthorized access by the computers in the public network to the
computers in the trusted network is prevented.
How Does Wireless Networking Work?
Wireless networking creates a network by transmitting and
receiving data as radio-frequency signals between your computers
and the SOHO 6 Wireless using the 802.11b standard defined by