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How do you secure your organization's network?

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Network security is a vital aspect of any organization that relies on digital systems and data. It involves protecting the network from unauthorized access, misuse, or damage. Network security requires a combination of technical, administrative, and physical measures to ensure the confidentiality, integrity, and availability of the network and its resources. In this article, you will learn some of the best practices and tips to secure your organization's network.

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Lars Martin Birkeland

I help early-stage CISOs and IT Pros manage cyber risks confidently and communicate threats effectively | CISO

1 Assess your network

The first step to secure your network is to assess its current state and identify any potential vulnerabilities or risks. You can use various tools and methods to perform a network audit, such as scanning, testing, monitoring, and analyzing the network components and traffic. A network audit can help you discover any weak points, such as outdated software, misconfigured devices, unauthorized users, or malicious activities. Based on the audit results, you can prioritize and implement the necessary actions to improve your network security.

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Lars Martin Birkeland

I help early-stage CISOs and IT Pros manage cyber risks confidently and communicate threats effectively | CISO
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In order to know what to insure, it is important to carry out a risk assessment. The risk assessment lays the foundation for what we can consider to be acceptable risk and what measures are needed. After a risk assessment, I usually carry out a scan of the network, for example, a vulnerability scan to see the whole picture.

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2 Implement security policies

The second step to secure your network is to implement security policies that define the rules and standards for accessing and using the network and its resources. Security policies can help you establish the roles and responsibilities of the network users and administrators, as well as the procedures and protocols for managing the network security. Security policies can also help you enforce compliance with the relevant laws and regulations, such as data protection and privacy laws. You should communicate and educate your network users and administrators about the security policies and monitor their adherence.

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Lars Martin Birkeland

I help early-stage CISOs and IT Pros manage cyber risks confidently and communicate threats effectively | CISO
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Draft a comprehensive network security policy that sets the foundation for all your security measures. I often make a policy as something to strive for and get the top management and employees involved in securing the company.

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3 Use encryption and authentication

The third step to secure your network is to use encryption and authentication to protect the data and communication on the network. Encryption is the process of converting the data into a code that can only be read by authorized parties with the right key. Authentication is the process of verifying the identity of the network users and devices with the help of passwords, tokens, certificates, or biometrics. Encryption and authentication can help you prevent unauthorized access, interception, or modification of the data and communication on the network.

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4 Install firewalls and antivirus

The fourth step to secure your network is to install firewalls and antivirus software on the network devices. Firewalls are devices or programs that filter and block the incoming and outgoing network traffic based on predefined rules. Antivirus software are programs that detect and remove any malicious software, such as viruses, worms, or ransomware, that can infect or damage the network devices. Firewalls and antivirus software can help you protect your network from external and internal threats, such as hackers, malware, or phishing.

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Lars Martin Birkeland

I help early-stage CISOs and IT Pros manage cyber risks confidently and communicate threats effectively | CISO
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In my view, the best secure method is to divide the network into segments based on the nature of data or processes. This ensures that the others remain secure even if one segment is compromised. The most common method is using Virtual LANs (VLANs) and firewalls to segregate sensitive data. Firewalls act as barriers between trusted internal networks (and segments) and untrusted external networks, filtering out malicious traffic

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5 Update and backup

The fifth step to secure your network is to update and backup your network software and data regularly. Updating your network software, such as operating systems, applications, or firmware, can help you fix any bugs or vulnerabilities that can compromise your network security. Backing up your network data, such as files, databases, or configurations, can help you restore your network in case of any loss or damage due to natural disasters, human errors, or cyberattacks. You should schedule and automate your updates and backups to ensure their frequency and reliability.

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6 Train and educate

The sixth step to secure your network is to train and educate your network users and administrators about the best practices and tips for network security. Network security is not only a technical issue, but also a human one. Many network security breaches are caused by human factors, such as negligence, ignorance, or deception. Therefore, you should provide regular and relevant training and education to your network users and administrators about the network security policies, procedures, and protocols, as well as the common network security threats, risks, and countermeasures.

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Isyraf Zakil

Software Engineer at Accendo | AI Enthusiast
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In my experience, phishing training is really important, it’s your best defense and at the same time, actually the weakest spot in the defense, so educate yourself and your employees on social engineering.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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Lars Martin Birkeland

I help early-stage CISOs and IT Pros manage cyber risks confidently and communicate threats effectively | CISO
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Perform regular vulnerability scanning on network services and close any unnecessary ports or services running on network devices.

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How do you secure your organization's network?

1

2

3

4

5

6

7

1 Assess your network

2 Implement security policies

3 Use encryption and authentication

4 Install firewalls and antivirus

5 Update and backup

6 Train and educate

7 Here’s what else to consider

Computer Science

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How do you secure your organization's network?

1

2

3

4

5

6

7

1 Assess your network

2 Implement security policies

3 Use encryption and authentication

4 Install firewalls and antivirus

5 Update and backup

6 Train and educate

7 Here’s what else to consider

Computer Science

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