Snort deployed in the dmz network, Computer Networking

Assignment Help:

Let's consider the network shown in Figure 1 where Snort is deployed.

In Figure 1, why is Snort deployed in the DMZ instead of the Internal Network?

In Figure 1, say True or False to the following statement: "Snort can see both incoming packets from the left firewall and outgoing packets from the right firewall".

In Figure 1, assume a packet P matches the following Snort rule when the packet is analyzed by Snort.

1336_Compute the hash - part of the packet.png

Is packet P a TCP packet or a UDP packet?

Is packet P an incoming packet or an outgoing packet?

What is the source IP address contained in the header of packet P?

What is the destination IP address contained in the header of packet P?

Who is the receiver program of this packet?

The payload of packet P must contain four specific bytes. What are the four specific bytes?

Since packet P matches the rule, an alert will be raised and the Security Administrator will receive a notice (message) from Snort. What will the notice say to the administrator?

A Phf attack is a remote to local (R2L) attack against the Web Server running the "Phf" CGI script. Phf script has vulnerability that, when exploited, allows remote users to execute arbitrary commands on the Web Server and such commands will be written as:

368_Snort deployed in the DMZ Network.png


Attackers can launch this attack from any PC connected to the Internet, and the target system can be any apache web servers that permit access to the Phf script. Let's assume that the Web Server shown in Figure 1 (inside DMZ) is an apache web server that permits Phf scripts and let's assume the IP address of the Web Server is 195.4.12.5. Please give a concrete Snort rule that can detect Phf attacks against the Web Server.

To be able to detect attack packets, Snort firstly needs to log the corresponding traffic. For this purpose, the Snort administrator will need to set up several log rules. Please give a log rule to let Snort log UDP traffic from any IP address with any port going to computers on the Internal Network specified with a Class C IP range 195.4.13.0/24.

Explain the meaning of the following Snort rule.

1217_Snort deployed in the DMZ Network1.png


Related Discussions:- Snort deployed in the dmz network

Cpm-pert network analysis problem, Solve the following CPM/PERT Network Ana...

Solve the following CPM/PERT Network Analysis problem: Given the following network and activity time estimates, determine earliest and latest activity times, slack, the expecte

Inductor, #clasification of inductor

#clasification of inductor

What is multimode graded-index fiber, Q. What is Multimode Graded-Index Fib...

Q. What is Multimode Graded-Index Fiber? - Ever since the core density decreases with distance from the centre the light beams refract into a curve - Eliminates problem with

Describe about the server and browser software, Describe about the Server a...

Describe about the Server and browser software Most of the server and browser software developed by various vendors carry out encryption using either a 40-bit or a 128-bit sec

Application layer - fundamentals of networks, Application Layer The ap...

Application Layer The application layer provides  an  interface between  application  entities and the  users computer. This layer offers services to a variety of aspects of d

Building distributed systems, Unfortunately, building real-life distributed...

Unfortunately, building real-life distributed systems is not easy. It is hard, for instance, to implement instructions such as "send this data structure to be processed on that com

What is sonet, What is Sonet Synchronous Optical Network is a fiber opt...

What is Sonet Synchronous Optical Network is a fiber optic technology that can transmit high-speed data audio, used for text and video. Single clock handles timing of transm

Briefly describe the purpose of windows powershell, Question: a) Brief...

Question: a) Briefly describe the purpose of Windows Powershell? b) Name ways software can be installed on Linux? c) What is an interrupt request? d) As the Networ

Implement a transport layer protocol to transmit data, In this project, you...

In this project, you will implement a Transport Layer protocol to transmit data with Reliable Data Transfer from a client to a server in the presence of channel errors and loss. Th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd