Netopia 2200 - Manual (Page 127)

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Security
TIPS for making your BreakWater Basic Firewall Selection
Basic Firewall Background
As a device on the Internet, a Netopia Gateway requires an IP address in order to send or
receive traffic.
The IP traffic sent or received have an associated application por t which is dependent on
the nature of the connection request. In the IP protocol standard the following session
types are common applications:
By receiving a response to a scan from a por t or series of por ts (which is the expected
behavior according to the IP standard), hackers can identify an existing device and gain a
potential opening for access to an internet-connected device.
To protect LAN users and their network from these types of attacks, BreakWater offers
three levels of increasing protection.
The following tables indicate the state of ports associated with session types, both on
the WAN side and the LAN side of the Gateway.
Application Select this Level Other Considerations
Typical Internet usage
(browsing, e-mail) SilentRunning
Multi-player online
gaming ClearSailing Set Pinholes; once defined, pinholes will be
active whenever ClearSailing is set.
Restore SilentRunning when finished.
Going on vacation LANdLocked Protects your connection while your away.
Finished online use for
the day LANdLocked This protects you instead of disconnecting your
Gateway connection.
Chatting online or using
instant messaging ClearSailing Set Pinholes; once defined, pinholes will be
active whenever ClearSailing is set.
Restore SilentRunning when finished.
• ICMP • HTTP • FTP
• SNMP • telnet • DHCP