3Com 3CRWE51196 User Guide - Page 48

Security, Allow PING from the Internet

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48 CHAPTER 5: GATEWAY CONFIGURATION Figure 49 PC Privileges Setup Screen 5 Activate the Allow or Block radio buttons. Select the service(s) to allow or block by clicking in the appropriate check box(es), and then specify the port number for corresponding services. If you wish to deny access to all services for all PCs, click Block for All other services. 6 Click Add to save the settings. 7 Check all of your settings, and then click Apply. Security Select Security to display the Advanced Settings screen (Figure 50). Figure 50 Security Screen The Internet connects millions of computer users throughout the world. The vast majority of the computer users on the Internet are friendly and have no intention of breaking into, stealing from, or damaging your network. However, there are hackers who may try to break into your network. Allow PING from the Internet PING is a utility, which is used to determine whether a device is active at the specified IP address. PING is normally used to test the physical connection between two devices, to ensure that everything is working correctly. By default the Gateway has PING disabled in order to make the device more difficult to find on the Internet and less prone to attack. This feature is enabled by clicking on the check box so that a tick can be seen and then pressing the Apply button.

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48
C
HAPTER
5: G
ATEWAY
C
ONFIGURATION
Figure 49
PC Privileges Setup Screen
5
Activate the
Allow
or
Block
radio buttons.
Select the service(s) to allow or block by clicking in the appropriate check box(es),
and then specify the port number for corresponding services. If you wish to deny
access to all services for all PCs, click
Block
for
All other services
.
6
Click
Add
to save the settings.
7
Check all of your settings, and then click
Apply
.
Security
Select
Security
to display the Advanced Settings screen (Figure 50).
Figure 50
Security Screen
The Internet connects millions of computer users throughout the world. The vast
majority of the computer users on the Internet are friendly and have no intention
of breaking into, stealing from, or damaging your network. However, there are
hackers who may try to break into your network.
Allow PING from the Internet
PING is a utility, which is used to determine
whether a device is active at the specified IP address. PING is normally used to test
the physical connection between two devices, to ensure that everything is working
correctly.
By default the Gateway has PING disabled in order to make the device more
difficult to find on the Internet and less prone to attack.
This feature is enabled by clicking on the check box so that a tick can be seen and
then pressing the
Apply
button.