Examples Of Network Access Rules - 3Com OfficeConnect 3C16771 User Manual

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Rules are listed in the Web management interface window
from most specific to the least specific, and rules at the top
override rules listed below.

Examples of Network Access Rules

The following examples illustrate methods for creating
Network Access Rules.
Blocking LAN Access to Specific Protocols
This example shows how to block all LAN access to NNTP
servers on the Internet.
1 For the Action, choose Deny.
2 From the Service list, choose NNTP.
If the service is not listed in the menu, add it in the Add
Service window.
3 Select LAN from the Source Ethernet list.
4 Since all computers on the LAN are to be affected, enter
in the Source Addr. Range Begin box.
5 Select WAN from the Destination Ethernet menu.
6 Since the intent is to block access to all NNTP servers, enter
in the Destination Addr. Range Begin box.
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7 Click Add Rule.
Block Access to Specific Users
This example shows how to create a rule which blocks a
certain range of computers, such as a competitor, from
accessing the public Web server on the LAN or DMZ.
1 For the Action, choose Deny.
2 From the Service list, choose HTTP.
3 Select WAN from the Source Ethernet list.
4 Enter the blocked network's starting IP address in the
Source Addr. Range Begin box and the blocked network's
ending IP address in the Source Addr. Range Begin box.
5 Select
A single IP address is more specific than an IP address
range.
from the Destination Ethernet list.
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Policy Rules 107
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