3Com OfficeConnect 3C16771 - Setting up the Internet Firewall 25 with an Officeconnect 56 K LAN Modem

152
A
PPENDIX
E: E
XAMPLE
C
ONFIGURATIONS
b
Type the registration code you were given into the text
box next to the message, and click
Updat
e. The Internet
Firewall DMZ is now registered.
Setting up the Internet Firewall 25 with an
OfficeConnect 56K LAN Modem
In this example the OfficeConnect 56K LAN Modem is
referred to as the LAN Modem.
In this example, you have 20 PCs networked together. The
PCs have only been used for file and printer sharing, and so
have not been set up with IP addresses. They have TCP/IP
networking enabled, and are set to obtain IP addresses
dynamically. Currently, there is no Internet access, but you
have purchased a LAN Modem to provide dial up
connectivity, and an Internet Firewall 25 for security.
In this example, you have an account with an ISP for the
dial up connection. This account offers one IP address,
configured dynamically. You have the following
information about the ISP:
■
DNS server addresses —
10.201.80.7
and
10.201.80.8
.
■
Dial up number — 555- 987654
■
Account login name — myaccount
■
Password — mypassword.
In this example, you are not going to use the
OfficeConnect Web Site Filter list, but you know that all the
information that employees need is available on the
domain
3com.com
. You do not want users to access any
other domains. In addition, you do not want logs or alerts
e-mailed out, but plan to keep track of the Internet
Firewall 25 through a syslog server. (You have already
installed the syslog server software, which is freely
obtainable from the Internet, on one of the PCs.)