Securing the Cloud: How Firewalls are Changing in the Era of Cloud Computing

Subbaram Gowra |

Cloud computing has led to some changes in how firewalls are used and deployed. Some of the ways cloud computing is changing firewalls include:

  1. Shift to cloud-based firewalls: With more organizations moving their infrastructure and applications to the cloud, there is a growing need for cloud-based firewalls that can protect these resources. Cloud-based firewalls can be managed and configured remotely, making them more convenient and scalable than traditional on-premises firewalls.
  2. Increase in the use of software-defined firewalls: Cloud infrastructure is highly dynamic, and traditional firewalls may not be able to keep up with the pace of change. Software-defined firewalls, on the other hand, can be more easily integrated with cloud-based infrastructure and can be managed and configured programmatically, making them more suitable for cloud environments.
  3. Greater focus on security at the network edge: Cloud environments often require a distributed network architecture, with resources spread across multiple locations. This makes it important to secure the network edge, where traffic enters and exits the cloud environment. Firewalls can play an important role in securing the network edge and protecting against external threats.
  4. Changes in the type of threats: Cloud computing brings new challenges, such as the need to protect against attacks on the application layer, and the emergence of new types of threats, such as those that target cloud-based infrastructure specifically. This means that firewalls need to be able to detect and prevent these new types of threats.
  5. Greater emphasis on compliance: Cloud-based resources are often subject to various compliance requirements, such as HIPAA, PCI-DSS and SOC2. Firewalls can play an important role in ensuring that cloud-based resources comply with these requirements by monitoring and controlling access to sensitive data.

Overall, Cloud computing is changing the way firewalls are used, and it requires a different approach to security, which is more dynamic, programmable and focused on network edge protection.

How to Choose the Right Firewall for Your Business


When sizing a firewall for an office, there are several key factors to consider:

  1. Network traffic: The first step is to determine the amount of network traffic that will be passing through the firewall. This can include both incoming and outgoing traffic, as well as internal traffic within the office. This will help to determine the processing power and memory required for the firewall.
  2. Number of users: The number of users in the office will also have an impact on the size of the firewall required. A larger number of users will require a firewall with more capacity to handle the increased traffic and number of connections.
  3. Types of applications and services: The types of applications and services that will be running in the office will also have an impact on the size of the firewall. For example, if the office is running a lot of video conferencing or streaming services, a firewall with more bandwidth and processing power will be required.
  4. Security requirements: The security requirements of the office will also impact the size of the firewall required. For example, if the office needs to comply with specific regulations such as HIPAA, a firewall with advanced security features, such as intrusion prevention and malware protection will be required.
  5. Network architecture: The network architecture of the office will also play a role in determining the size of the firewall required. For example, if the office is using a distributed network architecture, with resources spread across multiple locations, a firewall with the ability to secure the network edge will be required.
  6. Future growth: It’s also important to consider future growth and expansion of the office, so the firewall should have the ability to handle additional traffic and users as the office grows.

Once you have considered these factors, you can then use this information to select a firewall that is appropriately sized for your office. It’s also important to work with a vendor or a security expert to ensure that the firewall you choose will meet your needs, and can be integrated with your network infrastructure and security systems.

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