Cisco WS-CE500 Administration Manual page 111

Firewall Configuration
Configuring Firewall Rules to Control Inbound and Outbound Traffic
STEP 1
STEP 2
STEP 3
Cisco SA500 Series Security Appliances Administration Guide
• You can allow or block traffic from specified MAC addresses. For more
information, see
page 119
• You can associate IP addresses with MAC addresses to prevent spoofing.
For more information, see
Spoofing, page 128
Click Firewall > Firewall > IPv4 Rules or IPv6 Rules, or for IPv4 rules, you can use
the Getting Started (Advanced) page. In the Firewall and NAT Rules section, click
Configure Firewall and NAT Rules.
The Firewall Rules window opens. Any existing rules appear in the List of Available
Firewall Rules table.
For IPv4 rules, you can view the list of available rules by zone. Choose the source
and destination from the From Zone and To Zone drop-down menu and click
Display Rules.
To add a rule, click Add.
Other options: Click the Edit button to edit an entry. To delete an entry, check the
box and then click Delete. To change the status of a rule, check the box and then
click Enable or Disable. To select all entries, check the box in the first column of
the table heading.
The IPv4 Firewall Rules page includes the option to move a rule up, move a rule
down, or move it to a specified location in the firewall rules list. For more
information, see Prioritizing Firewall Rules, page
If you click Add or Edit, the Firewall Rules Configuration window opens.
In the Firewall Rule Configuration area, enter the following information:
• From Zone: Chose the source of the traffic that is covered by this rule. For an
inbound rule, choose INSECURE (WAN) if the traffic is coming from the
Internet or choose DMZ if the traffic is coming from a server on your DMZ.
• To Zone: For an inbound rule, choose SECURE (LAN) if the traffic is going to
the LAN, or choose DMZ if the traffic is going to a server on your DMZ.
- If the From Zone is the WAN, the To Zone can be the public DMZ or secure
LAN.
- If the From Zone is the LAN, then the To Zone can be the public DMZ or
insecure WAN.
Configuring MAC Filtering to Allow or Block Traffic,
Configuring IP/MAC Binding to Prevent
113.
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111