Most Recent Eccouncil 212-82 Exam Dumps

These firewalls operate by tracking the state and context of active connections, maintaining session information such as IP addresses and port numbers. They inspect packets at multiple layers of the OSI model, including the network, transport, and session layers.

Session Information Tracking:

Stateful inspection maintains a state table that keeps track of all active connections passing through the firewall, ensuring that only legitimate packets part of an established session are allowed.

Application-Level Gateway Firewalls:

Also known as proxy firewalls, these operate at the application layer of the OSI model. They filter traffic by examining the content of the packets, making decisions based on the application data, and enforcing security policies at the application level.

Control Over Applications:

Application-level gateway firewalls provide granular control over input, output, and access to applications or services. They can enforce application-specific policies, perform deep packet inspection, and block malicious traffic at the application layer.

By understanding the distinct functionalities and capabilities of stateful multilayer inspection firewalls and application-level gateway firewalls, organizations can better secure their network infrastructure.

In handling a case involving a missing laptop with sensitive financial data, the most important initial action regarding digital evidence is:

Securing the Scene:

Prevent Contamination: Secure the location where the laptop was last seen to prevent any further tampering or contamination of potential evidence.

Preservation: Ensure that any physical evidence related to the incident is preserved for further investigation.

Subsequent Steps:

Investigation: After securing the scene, proceed with interviewing personnel, reporting the incident to law enforcement, and analyzing the laptop (if found) without turning it on to avoid altering any evidence.

Guidelines for handling digital evidence: NIST Digital Evidence

Best practices in digital forensics: SANS Institute

The attacker is a user from the image file in the above scenario. A file system is a method or structure that organizes and stores files and data on a storage device, such as a hard disk, a flash drive, etc. A file system can have different types based on its format or features, such as FAT, NTFS, ext4, etc. A file system can be analyzed to extract various information, such as file names, sizes, dates, contents, etc. A Linux image is an image file that contains a copy or a snapshot of a Linux-based file system . A Linux image can be analyzed to extract various information about a Linux-based system or device . To analyze the file system of a Linux image captured from a device that has been attacked recently and identify a user from the image file, one has to follow these steps:

Navigate to Documents folder of Attacker Machine-1.

Right-click on Evidenced.img file and select Mount option.

Wait for the image file to be mounted and assigned a drive letter.

Open File Explorer and navigate to the mounted drive.

Open etc folder and open passwd file with a text editor.

Observe the user accounts listed in the file.

The user accounts listed in the file are:

root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/usr/sbin/nologin man:x:6:12:man:/var/cache/man:/usr/sbin/nologin lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin mail:x:8:8:mail:/var/mail:/usr/sbin/nologin news:x:9:9:news:/var/spool/news:/usr/sbin/nologin uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin proxy:x:13:13:proxy:/bin:/usr/sbin/nologin www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin backup:x:34:34:backup:/var/backups:/usr/sbin/nologin list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin systemd-timesync:x:100: systemd-network:x: systemd-resolve:x: systemd-bus-proxy:x: syslog:x: _apt:x: messagebus:x: uuidd:x: lightdm:x: whoopsie:x: avahi-autoipd:x: avahi:x: dnsmasq:x: colord:x: speech-dispatcher:x: hplip:x: kernoops:x: saned:x: nm-openvpn:x: nm-openconnect:x: pulse:x: rtkit:x: sshd:x: attacker::1000

The user account that is not a system or service account is attacker, which is a user from the image file.

Security event log is the type of event log analyzed by Tenda in the above scenario. Windows Event Viewer is a tool that displays logged data about various events that occur on a Windows system or network. Windows Event Viewer categorizes event logs into different types based on their source and purpose. Security event log is the type of event log that records events related to Windows security; specifically, log-on/log-off activities, resource access, and also information based on Windows system's audit policies . Security event log can help identify attempted or successful unauthorized activities on a Windows system or network. Application event log is the type of event log that records events related to applications running on a Windows system, such as errors, warnings, or information messages. Setup event log is the type of event log that records events related to the installation or removal of software or hardware components on a Windows system. System event log is the type of event log that records events related to the operation of a Windows system or its components, such as drivers, services, processes, etc.

To determine the length of Ping of Death (PoD) packets in bytes from the provided network traffic capture (android.pcapng), follow these steps:

Open the Capture File:

Use a network analysis tool like Wireshark to open the android.pcapng file.

Filter for PoD Packets:

Apply filters to isolate ICMP echo request packets (Ping packets) and specifically look for oversized packets characteristic of a Ping of Death attack.

Analyze Packet Length:

Examine the packet details to determine the length of the packets involved in the attack. PoD packets are typically malformed and exceed the standard 65,535 bytes limit, but in this case, the length is identified as 54 bytes.

Wireshark documentation and usage: Wireshark User Guide

Analysis of Ping of Death attacks: CERT Advisory