Firewall
Configuring the General Firewall Settings
Cisco Small Business RV0xx Series Routers Administration Guide 100
7
NOTE
• If you want to disable the firewall (not recommended), you can do so only if
you have configured the administrator password. If you are still using the
default password, you must change it. For more information, see Changing
the Administrator Username and Password, page 40.
• Before navigating away from this page, click Save to save your settings, or
click Cancel to undo them. Any unsaved changes are abandoned.
Enable or disable the firewall and related features:
• Firewall: Choose to enable or disable the firewall. This feature is enabled
by default and is strongly recommended to protect your network. Enabling
or disabling the firewall also affects several related features, as described
below. Disabling the firewall also disables Access Rules and Content Filters.
If you choose Disable and you are still using the default administrator
password, a message appears. To protect your router from unauthorized
access, you must change the password before you can disable the firewall.
Click OK to continue to the Password page, or click Cancel to remain on the
current page. After you change your password, you can return to this page
to resume this procedure.
• SPI (Stateful Packet Inspection): When enabled, this feature allows the
router to review the information that passes through the firewall. It inspects
all packets based on the established connection, prior to passing the
packets for processing through a higher protocol layer. This feature can be
enabled only when the firewall is enabled.
• DoS (Denial of Service): When enabled, this feature protects internal
networks from Internet attacks, such as SYN Flooding, Smurf, LAND, Ping of
Death, IP Spoofing, and reassembly attacks. This feature can be enabled
only when the firewall is enabled.
• Block WAN Request: When enabled, this feature allows the router to drop
both unaccepted TCP requests and ICMP packets from the WAN side.
Hackers will not find the router by pinging the WAN IP address. This feature
can be enabled only when the firewall is enabled.
• Remote Management: When enabled, this feature allows you to connect to
the router’s web-based configuration utility through a WAN connection. This
feature is disabled by default. It can be enabled only when the firewall is
enabled. If you want to enable remote management, you should first
configure a strong administrator password on the
Setup > Password
page.
This precaution prevents an unauthorized user from accessing the router
with the default password. If you enable this feature, you can keep the
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