Data-Center-to-Internet Traffic Security Approaches
Table of Contents
10.2
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- What Is a Data Center Best Practice Security Policy?
- Why Do I Need a Data Center Best Practice Security Policy?
- Data Center Best Practice Methodology
- How Do I Deploy a Data Center Best Practice Security Policy?
- How to Assess Your Data Center
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- Create the Data Center Best Practice Antivirus Profile
- Create the Data Center Best Practice Anti-Spyware Profile
- Create the Data Center Best Practice Vulnerability Protection Profile
- Create the Data Center Best Practice File Blocking Profile
- Create the Data Center Best Practice WildFire Analysis Profile
- Use Cortex XDR Agent to Protect Data Center Endpoints
- Create Data Center Traffic Block Rules
- Order the Data Center Security Policy Rulebase
- Maintain the Data Center Best Practice Rulebase
- Use Palo Alto Networks Assessment and Review Tools
Data-Center-to-Internet Traffic Security Approaches
Learn the risks of the traditional approach to securing
data center server traffic to internet servers (for updates, certificate
revocation checks, etc.) and how the best practice approach mitigates
those risks.
The traditional legacy approach to securing data center
traffic flowing to the internet leaves valuable assets exposed to
risk, while the best practice approach protects your valuable assets.
| The Traditional Approach | Risk | The Best Practice Approach |
|---|---|---|
| Create port-based rules and/or IP-based rules, which provide sufficient security in the trusted network. | Port-based and IP-based rules can’t control which applications to allow to connect to the internet. If a port is open, any application can use the port. | Create strict application-based allow rules
that allow only data center servers that retrieve updates to use
only legitimate applications to communicate only with legitimate
update servers. Log and monitor allow rule violations. When you transition from port-based to application-based
rules, in the rulebase, place the application-based rule above the
port-based rule it will replace. Reset the policy rule hit counter for both rules.
If traffic hits the port-based rule, its policy rule hit count increases.
Tune the application-based rule until no traffic hits the port-based
rule for a period of time, then remove the port-based rule. |
| Data center servers only reach out to trusted servers such as update servers, so decrypting that traffic isn’t necessary. | Malware or command-and-control software that is already in the data center may attempt to communicate with external servers to download more malware or exfiltrate data. | Decrypt all traffic from the data center to the internet. Create a custom URL categories that defines the URLs data center servers are allowed to contact and use it in Security policy to limit internet access to external servers. Use the same custom URL in Decryption policy to decrypt traffic to those external servers. |
| Mix blocking and alerting threat prevention profiles from multiple vendors. | A conglomeration of individual tools leaves security holes for attackers and may not work together well. | The Palo Alto Networks suite of coordinated security tools works together to plug security holes and prevent attacks. |