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# System prepended metadata

title: System Admin

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# System Admin

### How do you change your DNS settings in Linux/Windows? 

Windows: Internet adapter/ 

Linux: sudo nano /etc/resolv.conf  add nameserver x.x.x.x 

### Cyber Crime vs Cyber-enabled crime 

Cyber-enabled crime: traditional crime that is amplified by the use of computer tech 

Cyber Crime: illegal action involving network or computer where it used to commit the crime 

### What is the main goal of information security within an organization or company? 

Protect CIA (Confidentiality, Integrity, Availability)

### What are the consequences of a cyber-attack? 

### First step of securing Linux Server 

Auditing: A system scan is performed using a tool called Lynis for auditing. Every category is scanned separately and the hardening index is provided to the auditor for further steps. 

Hardening: After the audit is complete, the system is hardened depending on the level of security it further needs. It is an important process based on the decision of auditor. 

Compliance: The system needs to be checked almost every day for better results and also lesser threats from security point of view. 

### How to secure a Web Server 

- Anti-virus and firewalls 
- Safe installation and configuration of the web server software 
- Secure installation and configuration of the O.S 
- Scanning system vulnerability 
- Remote administration disabling 
- Removing of unused and default account 
- Changing of default ports and settings to customs port and settings 
- Update/Patch the web server software 
- Update Permissions/Ownership of files 
- Delete default data/scripts 
- Remove or protect hidden files and directories 
- Web Application and Web Server Security 
- Minimize the server functionality disable extra modules 
- Increase logging verboseness 
- Configured to display generic error messages 
- Make sure Input Validation is enforced within the code: Security QA testing 
- Implement a software security policy 