3Com OfficeConnect 3C16771, User Manual

Page: 108 / 182

108 C
HAPTER
4: C
OMMAND
R
EFERENCE
6 Since the intent is to block access to all servers, enter
*
in
the Destination Addr. Range Begin box.
7 Click
Add Rule
.
Enabling the ISP to Ping the Internet Firewall
By default, the Internet Firewall does not respond to pings
from the Internet. However, Ping is a tool that many ISPs
use to verify that the Internet connection is active.
In this example, you limit the source to allow the ISP to ping
the Internet Firewall only.
1 For the Action, choose Allow .
2 From the Service list, choose Ping .
3 Select WAN from the Source Ethernet list.
4 Enter the starting IP address of the ISP’s network in the
Source Addr. Range Begin box and the network’s ending IP
address in the Source Addr. Range Begin box.
5 Select WAN from the Destination Ethernet list.
6 Since the intent is to allow a ping only to the Internet
Firewall, enter the Internet Firewall’s Web Address in the
Destination Addr. Range Begin
box.
7
Click Add Rule .
User Privileges
The Internet Firewall provides an authentication mechanism
which gives authorized users access to the LAN from
remote locations on the Internet as well as a means to
bypass the Internet filtering and blocking from the LAN to
the Internet.
User Settings
Click
Policy
, and then select the
User Privileges
tab. A
window similar to that in Figure 46 is displayed.