HP SuperStack Firewall Series Manual do Utilizador descarregar pdf (Página 24)

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 u se t he 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

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 213 214

Sem comentários

HP SuperStack Firewall Series Manual do Utilizador Página 24