Belkin F5D7632UK4 - Manual (Page 37)

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Manually Configuring your Router
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Firewall
Your Router is equipped with a firewall that will protect your network
from a wide array of common hacker attacks. The firewall also
masks common ports that are frequently used to attack networks.
These ports appear to be “Stealth”, meaning that for all intents and
purposes they do not exist to a would-be hacker. You can turn the
firewall function off if needed; however, it is recommended that you
leave the firewall enabled. Disabling the firewall protection will not
leave your network completely vulnerable to hacker attacks, but it is
recommended that you leave the firewall enabled.
Policy
This page lets the user set the firewall security level. You may choose
from four pre-defined security levels: Maximum, Typical (default setting),
Minimum, and Disabled.
Maximum Security –
This option will provide the user with maximum
security, but it might also block uncommon applications such as
online gaming. By selecting this option, the Router will reject all
inbound traffic from the Internet except remote administration
connections. It will also reject most outbound traffic to the Internet
except common applications such as Telnet, FTP, HTTP, HTTPS, DNS,
IMAP, POP3, Ping, and SMTP.