User guide

219
CONFIG Commands
Security Settings
Security settings include the Firewall, Stateful Inspection, and IPSec parameters. IPSec
security functionality is keyed. See “Software Feature Keys” on page 178.
Basic Firewall Settings
The Netopia Firewall delivers an easily selectable set of pre-configured firewall protection
levels. For simple implementation these settings (comprised of three levels) are readily
available.
set security firewall option [ low | medium | high ]
The Netopia Basic Firewall’s three settings are:
• low
The Netopia Basic Firewall’s default setting, supports both inbound and outbound traf-
fic. It is the only basic firewall setting that fully interoperates with all other Netopia soft-
ware features.
• medium
Using this level of firewall protection allows transmission of outbound traffic on pre-con-
figured TCP/UDP ports. It disables any attempt for inbound traffic to identify the Gate-
way. This is the Internet equivalent of having an unlisted number.
• high
The third option available turns off all inbound and outbound traffic, isolating the LAN
and disabling all WAN traffic.
☛ NOTE:
The Basic Firewall operates independent of the NAT functionality on the Gate-
way.