Toshiba Magnia SG30 - Manual (Page 116)

121 Establishing an Internet Connection
Internet security and the firewall
5.375 x 8.375 ver 2.1
All access to the Internet is channeled through a single access
point on the server, called the gateway. The firewall
incorporated into this gateway is a set of programs designed
to deny access to your network from the outside unless access
has been granted. By refusing access to your local network
resources, the firewall prevents potentially damaging use of
your local network computers by outside sources.
The server’s firewall is active for all connections made on the
public Ethernet port (used for broadband connections to the
Internet) as well as all communications on the modem (used
for dial-up Internet connections). This logically separates the
server from “remote” access equipment, but does not restrict
access by local network clients.
Firewall diagram
The firewall feature is set up to provide maximum protection
for your network, and should meet most network needs
without change. However, you may occasionally need to
enable special access to your local network by allowing
additional outside network traffic to pass through the firewall.
For this reason, a variety of special-case firewall
configuration options are available.
Magnia SG30
Local computers
Modem/ISDN connection
Broadband connection
Firewall