Shanto IO Firewall Policy

1. Introduction

This document delineates the Shanto IO Firewall Policy, meticulously crafted to safeguard the confidentiality, integrity, and availability of our IT systems and data. It establishes a framework of rules and procedures governing network traffic, ensuring authorized access while fortifying defenses against unauthorized attempts and malicious activities.

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2. Policy Purpose

  • Ensure the security of critical business operations and safeguard sensitive data.
  • Enforce compliance with relevant laws and regulations.
  • Mitigate risks associated with unauthorized access, intrusion, and malware.
  • Maintain a robust and reliable network environment to facilitate efficient business operations.

3. Scope

This policy applies comprehensively to all components of Shanto IO’s network infrastructure, encompassing internal networks, professional networking segments, digital marketing networks, and professional workflow environments. It extends to cover all devices and systems connected to these networks, irrespective of ownership or physical location.

4. General Principles

  • Default Stance: Inbound traffic is rigorously denied, except for explicitly permitted services.
  • Least Privilege: Users and systems are granted the minimum access necessary to execute their tasks.
  • Defense in Depth: Multiple layers of security are implemented to mitigate risks and prevent potential breaches.
  • Continuous Monitoring: Regular review and updates ensure adaptability to evolving threats and business requirements.

5. Network Segmentation

Shanto IO employs a segmented network architecture to enhance security and isolate critical assets. Access control rules are meticulously defined based on the security classification of each network segment:

  • Internal Network: Hosts core business operations and sensitive data, with access highly restricted to authorized Shanto IO personnel.
  • Professional Networking: Facilitates secure collaboration with external partners and clients, with access granted based on specific needs and security protocols.
  • Digital Marketing Network: Manages online advertising campaigns and website traffic, with access restricted to authorized marketing platforms and tools.
  • Professional Workflow: Enables secure communication and document sharing among employees, with access controlled based on user roles and permissions.

6. Firewall Configuration

  • Permitted Traffic: Explicitly defines authorized services and protocols for each network segment, specifying source and destination addresses and ports.
  • Denied Traffic: Clearly lists prohibited services and protocols to block unauthorized access attempts.
  • Access Control Lists (ACLs): Implements granular ACLs to control traffic flow between network segments and enforce access permissions.
  • Logging and Monitoring: Enables comprehensive logging of firewall activity for security analysis and incident response.
  • Intrusion Detection and Prevention (IDS/IPS): Deploys IDS/IPS systems to detect and prevent malicious activity within the network.

7. Remote Access

  • VPN Access: Utilizes a secure VPN gateway with robust encryption and 2FA for authorized remote users, including subscribers, employees, and vendors.
  • Least Privilege: Grants the minimum level of network access necessary for remote users to perform their tasks.
  • Session Timeouts: Implements session timeouts for remote access to automatically disconnect inactive users and minimize exposure.

8. Security Awareness and Training

  • Conducts regular security awareness training for employees and subscribers, educating them on best practices for password hygiene, phishing awareness, and responsible network usage.
  • Encourages a culture of security consciousness throughout the organization.

9. Change Management

  • Establishes a formal process for requesting, reviewing, and approving changes to the firewall policy.
  • Ensures changes are documented and implemented by authorized personnel only.
  • Regularly reviews and updates the policy to address evolving threats and business needs.

10. Incident Response

  • Develops an incident response plan outlining procedures for identifying, containing, and mitigating security incidents related to the firewall.
  • Assigns roles and responsibilities for incident response activities.
  • Regularly tests and updates the incident response plan to ensure its effectiveness.

11. Policy Administration

  • The Chief Data and Information Officer (CDIO) is responsible for the overall administration and enforcement of this policy.
  • The IT Security team is responsible for implementing and maintaining the technical aspects of the firewall policy.
  • All Shanto IO personnel are required to comply with this policy and report any suspected security incidents.

12. Conclusion

By implementing and adhering to this Firewall Policy, Shanto IO fortifies its network environment, ensuring the security and resilience needed to protect valuable assets and facilitate efficient business operations. Continuous monitoring, adaptation, and a culture of security awareness are paramount in maintaining a robust defense against emerging threats and ensuring the confidentiality, integrity, and availability of Shanto IO’s IT systems and data.

This document serves as a comprehensive outline of Shanto IO’s Firewall Policy, providing a foundation that can be adapted and refined based on specific organizational needs, technologies, and security considerations.

Contact Hasibul Hasan Shanto (CDIO)

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