Firewall:
A firewall is security software which imposes a set of protocols to prevent specific types of data from moving among trusted and untrusted level of networks.
Packet filtering firewall:
It is a network device from the types of firewall, which examines header of packets that transmits into a network and finds whether to drop it or forward it through next network based on its rules.
- It has separate subsets such as static packet filtering and dynamic packet filtering.
Static packet filtering:
It is a firewall, which requires configuration rules to be physically made, sequenced and altered within the firewall.
Dynamic packet filtering:
It is a firewall, which can control network traffic and make or alter the configuration rules to adapt.
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Chapter 6 Solutions
Principles of Information Security (MindTap Course List)
- How does a conventional packet-filtering router utilise the information it collects? How can a router that filters packets be regarded weak? What is the difference between a router with packet filtering and a firewall with stateful inspection?arrow_forwardThis in-depth description of DNS protocols covers iterative and non-iterative requests, authoritative and root servers, and DNS records.arrow_forwardWhich fragment numbers could be security risks because a packet filter might let them through?arrow_forward
- What kinds of packets can cause problems for even a stateful packet filter?arrow_forwardHow does a typical packet-filtering router use the collected information? How can a packet-filtering router be considered weak? What is the difference between a firewall with stateful inspection and a router with packet filtering?arrow_forwardWhich function is more important?What are the best software packet filtering techniques beyond the bare requirements?arrow_forward
- How are the Standard Access List and the Extended Access List different from one another?How is the process of filtering packets carried out?arrow_forwardShow how to implement native authentication and authorization services on a web server when a client requests protected resources. Do you like the first of these two justifications for layered protocols? Can you provide examples?arrow_forwardHow are connectionless protocols used, and what are their benefits and drawbacks in comparison to connection-based protocols?arrow_forward
- This comprehensive exposition of DNS operations covers iterated and non-iterated requests, authoritative and root servers, and DNS records.arrow_forwardIn what ways does a typical packet-filtering router put the information it has acquired to use? How is it possible for a router to filter packets yet be labelled weak? What is the primary difference between a firewall that does stateful inspection and a router that just performs packet filtering?arrow_forwardThis comprehensive exposition of DNS operations includes sections on iterated and non-iterated requests, authoritative and root servers, and DNS records.arrow_forward
- A+ Guide To It Technical SupportComputer ScienceISBN:9780357108291Author:ANDREWS, Jean.Publisher:Cengage,Systems ArchitectureComputer ScienceISBN:9781305080195Author:Stephen D. BurdPublisher:Cengage Learning
- Principles of Information Security (MindTap Cours...Computer ScienceISBN:9781337102063Author:Michael E. Whitman, Herbert J. MattordPublisher:Cengage Learning