Tag: Cyber Security Page 13 of 48

A firewall acts as the first line of defense against network intruders. It works by filtering packets of incoming and outgoing data based on preset security rules. These rules are also termed as firewall configurations. The efficiency of its configuration governs the efficiency of a firewall. The configuration rules should be set to be strict enough to block malicious traffic but lenient enough to allow unobstructed data flow essential to run the website operations.

Follow these steps to ensure effective firewall configuration to secure your business server:

Secure The Firewall: The first step is to secure the firewall to prevent hackers from gaining administrative access. It is important to refrain from using a firewall that is not secured, as it can do more damage by acting as an entry point for hackers. Simple ways to secure your firewall are –

Regularly update the firewall to the latest versions released by the developer.
Delete default user accounts set by the developer and change default passwords using password reset best practices.
Create different accounts for users who will manage the firewall and allow permissions based on their responsibilities instead of creating shared accounts.
Pre-define trusted subnets from within the organizational network and allow changes from these subnets only. This helps in reducing the attack surface.

Define Firewall Zones & IP Addresses: In order to define firewall zones, first identify the assets that need to be protected and group them based on the sensitivity or risk level. Place grouped assets together in network zones. For example, group together all servers that provide services over the internet, such as VPN servers, email servers, etc., in one network zone that allows limited inbound traffic from internet. This is usually known as DMZ or a demilitarized zone. Create as many zones as logically possible. Now establish IP address scheme that compliments the zone architecture of your network. Use this as the basis to create firewall zones.

Configure ACLs: ACLs refer to access control lists. They are the defining rules of the traffic that will be permitted to every interface and sub-interface of the firewall. An ACL should include well-defined specifications such as source and destination IP addresses, port numbers, and deny all button to block all unapproved traffic. Make sure to apply both inbound and outbound ACLs to every interface and sub-interface. Also, refrain from granting public access to firewall administration interfaces to prevent outside threats.

Configure Other Services: Check if the firewall you are deploying has add-on capabilities to act as DHCP server, NTP server, or Intrusion Prevention Server. In such case, make sure to configure these services. Additionally, configure the firewall to report to your logging server.

Test The Configuration: Run vulnerability scanning and penetration testing to make sure the firewall is blocking traffic as per ACLs. Create a backup of the firewall configuration for future reference. Make sure to run regular tests to ensure the efficiency of the firewall.

To know more about protecting your business network from cyberattcks, contact Centex Technologies. You can contact Centex Technologies at Killeen (254) 213 – 4740, Dallas (972) 375 – 9654, Atlanta (404) 994 – 5074, and Austin (512) 956 – 5454.

How To Prevent Lateral Movement Of Cyber Attacks?

By centexitguy

On February 27, 2023

In Cybersecurity

Spreading malware or virus across the network is a technique used by cyber attackers to spread their attack surface. By preventing lateral movement, organizations can limit the scope of a cyber-attack and minimize the damage caused.

Lateral movement cyberattack comprises the following steps:

Initial compromise to gain access
Reconnaissance to figure out the level of access and find targets
Privilege escalation to gain a higher access level
Lateral movement to infect targeted devices or apps

Preventing lateral movement is an ongoing and multifaceted effort that requires a constant focus on improving security measures to stay ahead of evolving cyber threats. Here are some steps to prevent lateral movement during a cyber-attack:

Limiting Access To System

The first step in preventing lateral movement is to limit access to critical systems and sensitive information. This can be done by implementing access controls, such as strong authentication mechanisms like Multifactor Authentication, and restricting user privileges.

Segmenting Networks

Segmenting a network prevents attackers from gaining access to other subnetworks. Segmenting can be done by implementing firewalls and routers to isolate different parts of the network.

Adopting Zero Trust

A Zero-trust architecture enhances security measures by assuming that any network traffic, whether internal or external, may pose a potential security risk. The system verifies and validates each access request which prevents system intrusion.

Network Traffic Monitoring

Monitoring network traffic can be done by implementing intrusion detection systems (IDS) and security information & event management (SIEM) solutions. These solutions can analyze network traffic, detect suspicious activity, and alert security teams.

Patching and Updating Systems

It is essential to regularly patch and update all systems and software to eliminate vulnerabilities that attackers can exploit to move laterally.

Implementing Least Privilege

By implementing the least privilege to user accounts, attackers will have limited access to systems and data, reducing the potential damage of a successful attack.

Using Endpoint Protection

Endpoint protection solutions (like antivirus/ firewall software) on all devices connected to the network can help prevent lateral movement by detecting and blocking malicious files and programs.

Conducting Security Audits

Security audits can help identify vulnerabilities and weaknesses in the network, and the results can be used to improve the security posture of the network and prevent lateral movement.

Training Employees

Employees should be trained on best practices for security, such as how to create strong passwords and how identify phishing emails.

To summarize, preventing lateral movement is vital for safeguarding against cyber-attacks. It’s crucial to adopt a comprehensive security approach and consistently assess and enhance the network’s security posture.

At Centex Technologies, we offer cutting-edge solutions to protect your business from evolving cyber threats. To know more about cybersecurity solutions, contact Centex Technologies at Killeen (254) 213 – 4740, Dallas (972) 375 – 9654, Atlanta (404) 994 – 5074, and Austin (512) 956 – 5454.

Top Ways to Integrate Cyber Security Automation in An Organization

By centexitguy

On February 17, 2023

In Security

PDF Version: top-ways-to-integrate-cyber-security-automation-in-an-organization

Why Students Are Easy Targets For Cyberattacks

By centexitguy

On January 28, 2023

In Security

The Internet has given rise to diverse learning opportunities for students. It has taken down the location barriers and has made it easier for students to connect with their peers, consult subject experts, and use online study material on a global stage. While this has increased their exposure to a wide range of opportunities, it has also piqued the interest of cybercriminals.

Why Are Hackers Interested in Students?

A major misconception in reference to cyber security is that hackers are motivated by financial gains alone and thus target large organizations only. While direct financial gains are the major motivating force behind cyber-attacks, the attackers may target individuals for other motives, such as identity theft, personality maligning, stalking, etc. These motives may or may not end in financial gains.

These are some of the reasons why hackers target students are:

Easy Target: Students pose as easy targets for hackers. They are not highly aware of the latest cyber threats, making them easy prey. Additionally, school networks are protected by IT professionals. However, it is not practically possible for school IT professionals to protect the student-owned device. With inadequate security measures, student devices are at a high risk of cyber-attacks.
Multiple Devices: Students generally use multiple internet-accessing devices such as smartphones, laptops, tablets, desktops, and smartwatches. As the number and types of devices increases, it enlarges the attack surface for hackers. This increases the probability of becoming a victim to a cyber-attack.
Social Media: Students share pictures, routine activity, and life updates on social media. This offers hackers an opportunity to track their activity and steal personal information. This information can be used to build fake profiles and launch attacks such as identity theft, stalking, cyber-bullying, etc.
Clean Credit History: Students have a clean credit history. Hackers target students’ credit history and use it to get credit approvals, take out loans, etc.

How Do Hackers Target Students?

Hackers use diverse types of cyber-attacks to target students. Common cyber-attacks targeting students are:

Data Theft: Students enter their details when logging in to online learning portals, shopping sites, etc. Hackers target such portals to get information and further use for malicious activities.
Phishing: Phishing attacks are launched by sending an authentic-looking email or message containing a malicious link. Once students click the link, they are directed to a malicious website where their information is collected or malware is downloaded on their system.
Scholarship Scams: Hackers design fake websites or pages that promise students a scholarship in exchange for a fee. This type of attack is used to steal both financial and personal details entered by the students.
Filesharing Risks: Hackers trick users into using free Peer-to-Peer filesharing services that expose the device to viruses or malware.
Webcam Hacking: This is a spyware or stalking attack. Also known as Camfecting, hackers encourage students to download malicious links containing spyware. Once installed, hackers gain access to the webcam of the infected device.
Social Engineering: Social engineering attacks are performed by monitoring social media activity or hacking social media accounts. This type of attack is aimed at tarnishing reputation or blackmailing.

Contact Centex Technologies at Killeen (254) 213 – 4740, Dallas (972) 375 – 9654, Atlanta (404) 994 – 5074, and Austin (512) 956 – 5454 for information on how to safeguard personal devices and online accounts from cyberattacks.