Netopia 2200 Manual Do Utilizador

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All computer operating systems are vulnerable to attack from outside sources, typically at 
the operating system or Internet Protocol (IP) layers. Stateful Inspection firewalls intercept 
and analyze incoming data packets to determine whether they should be admitted to your 
private LAN, based on multiple criteria, or blocked. Stateful inspection improves security by 
tracking data packets over a period of time, examining incoming and outgoing packets. Out-
going packets that request specific types of incoming packets are tracked; only those 
incoming packets constituting a proper response are allowed through the firewall.

Stateful inspection is a security feature that prevents unsolicited inbound access when 
NAT is disabled. You can configure UDP and TCP “no-activity” periods that will also apply to 
NAT time-outs if stateful inspection is enabled on the inter face. Stateful Inspection param-
eters are active on a WAN inter face only if enabled on your Gateway. Stateful inspection 
can be enabled on a WAN inter face whether NAT is enabled or not.

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Installing Stateful Inspection Firewall is mandator y to comply with Required 
Ser vices Security Policy - Residential Categor y module - Version 4.0 (specified 
by ICSA Labs)
For more information please go to the following URL: 

.

DHCP ser ver is enabled on the LAN by default.

This can be done by navigating to 

Expert Mode -> Security -> Stateful Inspection.