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  1. CCST Cybersecurity Practice Test
  2. CCST Networking Practice Tests
  3. CCNA Practice Exam
  4. CCNA Network Simulator

CCST Cybersecurity Certification Cram Notes

2.0 Basic Network Security Concepts

2.4 Set up a secure wireless SoHo network MAC address filtering, encryption standards and protocols, SSID

Setting up a secure wireless Small Office/Home Office (SoHo) network involves implementing various measures to protect the network from unauthorized access and ensure the confidentiality of data. Here are some steps to set up a secure wireless SoHo network:

1. Change the Default Administrator Credentials:

  • Access the administration interface of your wireless router and change the default username and password. Use strong, unique credentials to prevent unauthorized access.

2. Enable MAC Address Filtering:

  • MAC address filtering allows you to specify which devices are allowed to connect to your wireless network based on their unique MAC addresses. Configure your wireless router to only allow connections from known MAC addresses, effectively blocking unauthorized devices.

3. Use Strong Encryption:

  • Enable Wi-Fi encryption to protect the confidentiality of data transmitted over the wireless network. Choose the most secure encryption standard supported by your devices, such as WPA2 or WPA3. Avoid using WEP, as it is outdated and easily compromised.

4. Set a Strong Wi-Fi Password (Pre-Shared Key):

  • Configure a strong Wi-Fi password (Pre-Shared Key or PSK) for your wireless network. Use a combination of uppercase and lowercase letters, numbers, and special characters. Avoid using easily guessable passwords and regularly update them.

5. Disable SSID Broadcasting:

  • Disable the broadcast of your wireless network's SSID (Service Set Identifier). This makes your network less visible to casual users and can provide an additional layer of security. Users will need to manually enter the network name to connect.

6. Enable Network Encryption:

  • Enable encryption for sensitive traffic, such as web browsing or accessing online services. Ensure that websites use HTTPS (secure HTTP) to encrypt data in transit. This protects against eavesdropping and data interception.

7. Regularly Update Firmware:

  • Keep your wireless router's firmware up to date by regularly checking for updates from the manufacturer. Firmware updates often include security patches and bug fixes that address vulnerabilities.

8. Separate Guest and Internal Networks:

  • If your wireless router supports it, set up a separate guest network for visitors. This isolates guest devices from your internal network, enhancing security and protecting your sensitive data.

9. Enable Firewall and Intrusion Detection:

  • Enable the built-in firewall on your wireless router to filter incoming and outgoing network traffic. Additionally, consider setting up an intrusion detection system (IDS) to monitor for suspicious activities and potential attacks.

10. Disable Remote Administration:

  • Unless necessary, disable remote administration of your wireless router. This prevents unauthorized access to the router's management interface from the internet.

Remember to regularly review and update your network security measures to stay ahead of emerging threats. Additionally, educate users about secure wireless practices, such as not sharing passwords, using secure devices, and being cautious of connecting to unknown networks.

2.5. Implement secure access technologies

Implementing secure access technologies is crucial for protecting network resources and ensuring that only authorized users can access them. Here are some key technologies to consider:

1. Access Control Lists (ACLs):

  • ACLs are used to control network traffic by defining rules that permit or deny access based on various criteria, such as source/destination IP addresses, protocols, or ports. They can be implemented on routers, switches, and firewalls to enforce granular access policies and restrict unauthorized network traffic.

2. Firewalls:

  • Firewalls act as a barrier between internal networks and external networks, filtering incoming and outgoing traffic based on predefined rules. They can be implemented as hardware or software and help protect against unauthorized access, network threats, and malware. Firewalls can be configured to allow or block specific protocols, ports, or IP addresses.

3. Virtual Private Networks (VPNs):

  • VPNs provide secure remote access to networks over the internet. They encrypt data traffic between the user's device and the corporate network, ensuring confidentiality and integrity. VPNs create a secure tunnel, allowing remote users to access internal resources as if they were directly connected to the network, even when using public or untrusted networks.

4. Network Access Control (NAC):

  • NAC systems enforce policies to ensure that only authorized and compliant devices can connect to a network. NAC solutions typically include authentication mechanisms, endpoint security checks, and network monitoring. They help prevent unauthorized access, enforce security policies, and mitigate risks associated with compromised or non-compliant devices.

Implementing these technologies involves careful planning and configuration to align with your organization's security policies. Here are some considerations:

  • Identify the specific access requirements of your network and resources.

  • Define and enforce access control policies based on user roles, device types, and security levels.

  • Regularly update and maintain ACLs and firewall rules to reflect changing network requirements and address emerging threats.

  • Implement strong authentication mechanisms, such as multi-factor authentication (MFA), to enhance access security.

  • Configure VPNs with robust encryption algorithms and secure authentication protocols.

  • Deploy NAC solutions that integrate with existing network infrastructure and provide visibility and control over connected devices.

It's important to regularly review and assess the effectiveness of these technologies, apply security patches and updates, and stay informed about emerging threats and best practices in secure access technologies.


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