3Com 3CRADSL72, User Manual

Page: 54 / 104

54 C
HAPTER
5: R
OUTER
C
ONFIGURATION
computers are protected by a firewall, machines from the Internet cannot
get to them because they cannot be 'seen'.
If you need to configure the Virtual Server function for a specific
application, you will need to contact the application vendor to find out
which port settings you need.
To manually enter settings:
1 Enter the IP address in the space provided for the internal machine.
2 Enter the port type (TCP, UDP, or both TCP and UDP).
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
Enable checkbox.
5 Press the Set button to save the changes for each Virtual Server entry.
Client IP Filters The Router can be configured to restrict access to the Internet, e-mail or
other network services at specific days and times. Restriction can be set
for a single computer, a range of computers, or multiple computers.
Access Control
Figure 39 Access Control Screen