Any possible method of making your online environment safe counts. The protection should be the primary concern of any organization, no matter how big or small, especially those who are working with online environment, as any slightest breach in the data can produce massive havoc to the organization or to its name and fame in the market. Those stolen information can further be misused and can lead to the damage to the client and the customer, which can proliferate even further, therefore taking the necessary primitive steps in precaution are far better than having to face the problem and getting a blow.
The Firewall counts as one of the easiest and still an effective method, but major problem arises as one is trying to do firewall migration, which should be done by following the below steps in a systematic manner.
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Keep up with the new technology:
It is important to understand your current wall, and the latest one that you are planning to replace it with, so that you may be able to understand what are you trading for and to avoid any later regret, surprise or inability to handle.
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Review the current status:
It is important to review what is current in the configuration and to do the audit of the present setting, then clean all the unused address and to analyze the present rule base so that you may have the better idea of the present system.
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Translate configuration – Simulation:
Once you know the current system, next step is to simulate the configuration translation, following are important in this regard:
- Interface settings
- Routing
- Available setups
- Other settings like management, user, AAA and Sylog etc.
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Tests:
It is necessary to see if the currently set parameters are working fine or they need some change in the system. It is wise to write an Acceptance Test Plan (APT) another important test is the High Availability (HA) test that is the prime concern.
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Frozen zone:
Afterwards, declare the frozen zone and analyze and search for it very carefully so as to avoid any mistake in the future.
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Translate Configuration:
With extra attention to the task, it is time to repeat the previous simulation plan and to check if the things are working as per plan.
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Migration & Monitoring:
These are the last step and carry on as long as the system prevails.
