Snort deployed in the dmz network, Computer Networking

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

Posted Date: 2/16/2013 4:44:43 AM | Location : United States







Related Discussions:- Snort deployed in the dmz network, Assignment Help, Ask Question on Snort deployed in the dmz network, Get Answer, Expert's Help, Snort deployed in the dmz network Discussions

Write discussion on Snort deployed in the dmz network
Your posts are moderated
Related Questions
As a system administrator, you require to set up single Ethernet interface on the Cisco router to permit for both sap and Novell-ether encapsulations. Which set of commands will ac

DNS in the Internet -Domain name space is split into three sections: country, generic and inverse -Generic domains define hosts by generic behavior -Country domains are

To model a WAN, we need a graph in which the nodes model switches and the edges model direct join between switches. The modeling saves essence of network, and it ignores attached d

Which layers are user support layers? Three layers are come under user support layer:- a. Session Layer b. Presentation Layer and c. Application Layer

What's the difference among distance vector and link-state protocol?

Q. Physical Layer Responsibilities of osi model? - Physical characteristics of interfaces as well as media - Representation of bits with no interpretation - Data rate is

Coaxial Applications & Performance - Analog plus digital phone networks - Cable TV networks - Traditional Ethernet LANs - Power line and Home Networks-phone line -

I have a project on Information Communication Technology(I.C.T). So sir I want to know that what is internet? and how it works?

Difference among the communication and transmission? Transmission is a physical movement of information and concern issues as bit polarity, synchronization, clock etc. Commu

Transmission Control Protocol (TCP) TCP makes the Internet reliable. TCP solves several problems which can occur in a packet switching system. TCP provide the given facilities: