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It permits incoming packets that are legitimate responses to requests from internal hosts.

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12y ago

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Which firewall resource could include the capability of recognizing and filtering DoS attacks?

Stateful packet inspection


Which firewall feature is used to track communication channels and provides additional security for connectionless protocols?

Stateful Inspection. A stateful inspection firewall uses a technique known as stateful packet filtering to keep track of communication channels. This is different when compared to basic firewalls. Once the packet and connection has been sent, a normal firewall will not remember the communication channel, whereas the stateful inspection firewall will. This also proves useful to protect connectionless communication protocols.


What layer does stateful inspection work at?

Stateful inspection works at Network Layer . Many Thanks, Chinmoy Roy


What is the difference between packet filtering and stateful inspection?

Packet Filtering:permits or denies traffic based onsource/destination IP addresses, or TCP/UDP port numbers usingAccess Control Lists (ACLs)Stateful Packet Inspection:Tracks TCP and UDP sessions in a flowtable, using the Adaptive Security Algorithm.


Can the Netgear bridges perform stateful packet inspection for all incoming traffic?

Yes it offers the staeful inspection.


What firewall operates at the highest level of the OSI m?

Stateful packet inspection


What are used in stateful inspection to enable the implementation of temporary rules?

dynamic state tables


Which of the following can you use to monitor traffic passing through your firewall?

logs stateful inspection


What is deep packet filtering?

Deep packet filtering first examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions or predefined criteria to decide if the packet can pass or if it needs to be routed to a different destination, or for the purpose of collecting statistical information. This differs from "stateful packet inspection" (shallow filtering) where only the type of traffic and possibly the source and destination are inspected, not the contents of the traffic.


What is stateful inspection firewalls?

Stateful inspection firewalls monitor the state of active connections and use this information to determine which network packets to allow through the firewall. This is in contrast to static packet filtering where only the headers of packets are checked. Attackers can exploit this property of static filters to sometimes get information through the firewall by doing something like indicating "reply" in the header. Stateful inspection, on the other hand, analyzes packets all the way down to the application layer of the OSI model. Stateful inspection can monitor communications packets over a period of time and examine both incoming and outgoing packets. Outgoing packets that request specific types of incoming packets are tracked and only incoming packets that are proper responses are allowed through the firewall. In a firewall that uses stateful inspection, the network administrator can set the parameters to meet specific needs, for example ports can be closed unless an incoming packet requests connection to a specific port and then only that port is opened. This practice prevents port scanning, a well-known hacking technique.


How does a network firewall work?

Firewalls perform a simple form of "stateful inspection" of the packets that flow through them.


What is true concerning stateful packet inspection?

Access is permitted only if it is a legitimate response to a request from an internal host.