3Com 3CRWER300-73, User Manual

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Firewall 87
3 Specify the public port that will be seen by clients on the Internet, and the
LAN port which the traffic will be routed to.
4 You can enable or disable each Virtual Server entry by checking or
unchecking the appropriate
Enabled checkbox.
5 Click Apply to save the changes for each Virtual Server entry.
DMZ If you have a client PC that cannot run an Internet application properly
from behind the firewall, you can open the client up to unrestricted
two-way Internet access. This may be necessary if the NAT feature is
causing problems with an application such as a game or video
conferencing application.
Figure 68 DMZ Screen
Use this feature on a temporary basis. The computer in the DMZ is not
protected from hacker attacks.
Check the Enable DMZ box, the IP Address of Virtual DMZ Host will
appear.
1 Enter the last digits of the LAN IP address in the Client PC IP Address field.
Enter the IP address (if known) that will be accessing the DMZ PC into the
Public IP Address field, so that only the computer on the Internet at this
address can access the DMZ PC without firewall protection. If the IP