Keep in mind that the TCP/IP protocol suite's reassembly and reordering of packets happens during the transport phase. Some firewalls are designed to function just at the Internet or data layer level of abstraction. Without the proper sequence or the absence of a deleted packet, a stateful inspection firewall cannot make any inferences about the traffic being inspected.

Keep in mind that the TCP/IP protocol suite's reassembly and reordering of packets happens during the transport phase. Some firewalls are designed to function just at the Internet or data layer level of abstraction. Without the proper sequence or the absence of a deleted packet, a stateful inspection firewall cannot make any inferences about the traffic being inspected.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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FTP, on the other hand, requires verification that a file has been correctly transmitted to a client, but it does not give a built-in means to track this information. File Transfer Protocol (FTP) relies on the TCP/IP architecture's Transport layer to ensure that data is delivered.
It is important to keep in mind that the TCP/IP protocol suite's transport phase is where packet reassembly and reordering occurs. A firewall may function at the Internet or data layer level of abstraction. Whether the traffic stream is in the correct sequence or has been erased, a stateful inspection barrier cannot learn anything about it.
What is the difference between TCP and UPD session hijacking?
Explain in details with steps ( necessary diagrams) how a firewall does address translation when it receives a TCP packet from a remote web server intended for a web client on the private network and the translation table contains the matching tuple needed for NAT.
In what ways have vulnerabilities in the layer-2 protocol of routers been uncovered? In a PPP encapsulation router, why does sending an ICMP request continue to operate even if the subnet of the router's serial interface is changed?
Despite the fact that FTP requires independent verification of successful file delivery, the protocol does not offer a mechanism for servers to independently monitor this information on their own. The success of the delivery is dependent on the File Transfer Protocol (FTP), which is used by the TCP/IP protocols of the transport layer.