Maintaining security is an important aspect of administering a CentOS server. One component of maintaining security is to prevent disclosing information to untrusted parties. Another important security measures include detecting a potential break-in attempt. And, if an intrusion is successful, it’s important to detect and clean up after a successful intrusion.
In this chapter, we will look at how to prevent disclosing information by encapsulating network traffic inside a secure, encrypted channel. These channels are secured with digital certificates and the secure socket layer. We will also look at using SELinux to prevent unauthorized services from reading files. We will also look at how SELinux can help us prevent an intrusion and ways of detecting an intrusion if one does occur.
KeywordsConfiguration File Transport Layer Security Digital Certificate Advance Security Server Certificate
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