24
C
HAPTER
1: I
NTRODUCTION
purchase a twelve month Web Site Filter (3C16111) subscription. Both
the trial and the twelve month subscription are valid for an unlimited
number of users.
High Availability
Given the mission critical nature of many Internet connections each
component involved in your connection must be highly reliable. The
High
Availability
function of your Firewall adds to the already reliable platform
eliminating downtime due to hardware failure.
To use the
High Availability
function, connect another SuperStack 3
Firewall to the first as a high availability pair and configure the backup
Firewall to monitor the primary Firewall. In the event of failure of the
primary Firewall, the backup Firewall will take over its functions. See
“Configuring High Availability” on page 141 for details.
Logs and Alerts
The Firewall maintains a log of all events that could be seen as security
concerns. It can also track key events such as the top 25 most accessed
Web sites, or the top 25 users of Internet bandwidth. You can also set up
the Firewall to send an alert message through e-mail when a high-priority
concern, such as a hacker attack, is detected. See “Log/Alert Settings” on
page 177 for more information.
For detailed logging 3Com recommends that you us a syslog server or a
syslog reporting tool. A free syslog server is available from 3Com. To
download it point your web browser to:
http://www.3com.com/ssfirewall
and follow the link to the
Syslog Server
.
User Remote Access
(from the Internet)
Users can access intranet resources on the private LAN by successfully
logging into the Firewall from the Internet. Logging in requires a valid
user name and password, which are transmitted to the Firewall by the
remote user, using a Web browser, through an MD5-based encrypted
authentication mechanism. Once logged in, remote users are able to
access all IP resources on the LAN
Automatic IP Address
Sharing and
Configuration
The Firewall provides sharing of a single public IP address through
Network Address Translation
(
NAT
). It also provides simplified IP address
administration using the
Dynamic Host Configuration Protocol
(
DHCP
).
DUA1611-0AAA02.book Page 24 Thursday, August 2, 2001 4:01 PM
Summary of Contents for SUPERSTACK 3CR16110-95
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Page 122: ...122 CHAPTER 8 ADVANCED SETTINGS DUA1611 0AAA02 book Page 122 Thursday August 2 2001 4 01 PM...
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Page 190: ...190 CHAPTER 14 NETWORKING CONCEPTS DUA1611 0AAA02 book Page 190 Thursday August 2 2001 4 01 PM...
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Page 206: ...206 APPENDIX D TECHNICAL SUPPORT DUA1611 0AAA02 book Page 206 Thursday August 2 2001 4 01 PM...
Page 212: ...212 INDEX DUA1611 0AAA02 book Page 212 Thursday August 2 2001 4 01 PM...
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