Top 100 Network Security Interview Questions and Answers

An air gap is a physical space between two objects or surfaces, often used to prevent the transfer of heat or electricity.

• An air gap is commonly used in electrical systems to prevent electrical current from flowing between conductive materials.

• In plu...read more

SSL handshake is a process where a client and server establish a secure connection by exchanging encryption keys and verifying identities.

• Client sends a hello message to server with supported encryption algorithms

• Server responds with its own hello me...read more

Akamai Security configuration involves setting up rules and policies to protect web applications, while CDN helps in delivering content efficiently.

• Akamai Security configuration includes setting up WAF rules, access control policies, and threat intel...read more

A multi-layered approach is needed to prevent DoS and network attacks.

• Implement firewalls and intrusion detection systems

• Use load balancers to distribute traffic

• Regularly update software and security patches

• Limit access to sensitive data and systems

• E...read more

Develop a Remote Access Trojan (RAT) using Metasploit Framework (MSF)

• Use Metasploit Framework to create a payload for the RAT

• Set up a listener to receive connections from the compromised machines

• Utilize post-exploitation modules in MSF for advanced f...read more

Zone protection DoS is a feature that protects against DoS attacks by limiting traffic to specific zones, while DoS attack rule is a specific rule that detects and blocks DoS attacks.

• Zone protection DoS limits traffic to specific zones to prevent DoS...read more

DoS zone protection and DoS attack rule are two different methods to prevent DoS attacks.

• DoS zone protection is a feature that blocks traffic from a specific IP address or subnet if it exceeds a certain threshold.

• DoS attack rule is a security policy ...read more

SIEM architecture refers to the design and structure of a Security Information and Event Management system.

• SIEM architecture typically consists of data collection, normalization, correlation, and analysis components.

• Data collection involves gathering...read more

DMZ stands for Demilitarized Zone, a network segment that acts as a buffer between the internal network and the external network.

• DMZ is used to add an extra layer of security by isolating public-facing services from the internal network.

• It typically ...read more

Sophos can be integrated with AD server using Sophos Central or Sophos Enterprise Console.

• Install Sophos Central or Sophos Enterprise Console on the AD server.

• Configure the AD synchronization settings in Sophos.

• Create a synchronization account in AD ...read more

To implement anti-malware profile, call EDL with domains and send to sinkhole IPs via security ACL.

• Create an anti-malware profile with appropriate settings

• Create an EDL with domains to be blocked

• Create a security ACL and call the anti-malware profile...read more

Implement a multi-layered security approach to detect and prevent virus and malware threats.

• Install and regularly update antivirus and anti-malware software on all devices.

• Implement firewalls and intrusion detection/prevention systems.

• Educate employe...read more

Various types of attacks in a network include DDoS, phishing, malware, man-in-the-middle, and SQL injection.

• DDoS (Distributed Denial of Service) attack overwhelms a network with traffic.

• Phishing attack tricks users into revealing sensitive informatio...read more

Fortigate uses various techniques to stop DOS attacks.

• Fortigate can detect and block traffic from known malicious sources

• It can also limit the number of connections from a single IP address

• Fortigate can use rate limiting to prevent excessive traffic ...read more

Firewall policies are rules set in place to control the flow of network traffic in and out of a network.

• Firewall policies determine what traffic is allowed or blocked based on defined criteria

• Policies can be based on IP addresses, ports, protocols, a...read more

Email security refers to the measures taken to secure the transmission and content of emails to protect against unauthorized access, data breaches, and malware.

• Email encryption to protect the content of emails from being read by unauthorized parties

• I...read more

Zero trust architecture is a security model that eliminates the idea of trust based on network location.

• Zero trust assumes that threats could be both inside and outside the network.

• It requires strict identity verification for anyone trying to access ...read more

Bypassing ISE authentication involves exploiting vulnerabilities or using unauthorized methods to gain access.

• Exploiting vulnerabilities in the ISE system

• Using unauthorized credentials or access methods

• Spoofing MAC addresses or IP addresses

• Intercepti...read more

Prevent DDOS attacks by implementing network security measures and using specialized tools.

• Implement network security measures such as firewalls, intrusion detection and prevention systems, and load balancers

• Use specialized tools such as anti-DDoS se...read more

Kerberos protocol is a network authentication protocol that allows individuals communicating over a non-secure network to prove their identity to one another in a secure manner.

• Developed by MIT in the 1980s

• Uses symmetric key cryptography

• Involves a Ke...read more

Firewall generations refer to the evolution of firewall technology and their roles in network security.

• First generation firewalls - packet filtering based on IP addresses and ports

• Second generation firewalls - stateful inspection and improved securit...read more

Next Generation Firewall (NGFW) is a network security system that integrates intrusion prevention, application awareness, and other advanced features.

• NGFW combines traditional firewall capabilities with advanced security features like application con...read more

Security protocols for sending or receiving emails involve encryption, strong passwords, and being cautious of phishing attempts.

• Use encryption to protect the content of the email

• Use strong passwords to prevent unauthorized access

• Be cautious of phish...read more

WAF implementation involves configuring and deploying a web application firewall to protect web applications from various attacks.

• Identify the web applications that need protection

• Choose a suitable WAF solution based on requirements

• Configure the WAF ...read more

Securing a network from cyber threats involves implementing various security measures such as firewalls, encryption, regular software updates, and employee training.

• Implementing firewalls to monitor and control incoming and outgoing network traffic

• Us...read more

Defend against DDOS attacks by implementing strong network security measures.

• Use a firewall to filter out malicious traffic

• Implement rate limiting to prevent overwhelming the server

• Utilize a content delivery network (CDN) to distribute traffic and ab...read more

Identify antivirus software by checking processes, services, and installed applications on servers.

• Check running processes: Use 'ps aux' on Linux or Task Manager on Windows to look for 'CrowdStrike' or 'Symantec' processes.

• Inspect services: On Window...read more