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If you do have to conform to the PCI standard, which firewall option would be mandatory
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If you do have to conform to the PCI standard, which firewall option would be mandatory

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Or which would you configure (1 firewall or two), for SOX ?
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Or which would you configure (1 firewall or two), for SOX ?

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For Enterprise applications, do most implementations use a single firewall, <br />
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.. or do they use 2 firewalls, one in front of the DMZ and the other behind the DMZ<br />
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Is that much the &nbsp;same for Cloud implementations as well
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For Enterprise applications, do most implementations use a single firewall, 

.. or do they use 2 firewalls, one in front of the DMZ and the other behind the DMZ

Is that much the  same for Cloud implementations as well

Firewalls

Operating system security (OS security) is the process of ensuring OS integrity, confidentiality and availability. OS security refers to specified steps or measures used to protect the OS from threats, viruses, worms, malware or remote hacker intrusions. OS security encompasses all preventive-control techniques, which safeguard any computer assets capable of being stolen, edited or deleted if OS security is compromised, including authentication, passwords and threats to systems and programs.

OS Security

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.