CompTIA Security+ Exam Notes

CompTIA Security+ Exam Notes
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Tuesday, July 30, 2024

SWG (Secure Web Gateway) - NG-SWG

 URL Filter & Content Filter

For the Security+ exam both URL filter and content filter have been renamed. The new name is SWG (Secure Web Gateway).

SWG (Secure Web Gateway):
  • URL filter
  • Content filter
  • DLP (Data Loss Prevention)
  • CASB (Cloud Access Security Broker)

NG-SWG (Next-Generation Secure Web Gateway) adds:
  • Intrusion detection/prevention
  • Proxy-based firewall

Monday, July 29, 2024

Certificate Validation: Notes for the Security+ exam

 Checking the Validity of Certificates


On this exam there are only 2 ways to check the validity of a certificate:
  • CRL (Certificate Signing Request)
  • OCSP (Online Certificate Status Protocol)

CRL
  • You can use OCSP incase/instead
  • You have to download from the CA (Certificate Authority), recommended twice a day

OCSP
  • Real-time
  • Good, revoked, or unknown
  • Public CA 
  • Internet CA
  • You can use a CRL incase/instead

Too much traffic to intermediate CA, then use stapling.

Answer for CRL in the question:
  • OCSP

Answers for OCSP in the question:
  • CRL
  • Stapling
Reasons for revoking a certificate:
Employee leaves the organization
A system is decommissioned
A certificate is superseded
Private key is compromised
Certificate was issued fraudulently

Certificate that have expired do not need to be revoked.  




Digital Signature: Exam notes CompTIA Security+

 Digital Signature

Listed below are the items you need to know for the exam:

Digital signatures provide:
  • Non-repudiation
  • Authentication
  • Integrity

Creating the digital signature is a 2 step process:
  • First, hash the email/message
  • Second, the private key digitally signs (encrypts) the hash

The digital signature is created with the "sender's" keys. 

The digital signature is an encrypted wrapper for the sender's public key.

The recipient's system extracts the public key and decrypts the digital signature to validate the sender.

RSA and DSA (Digital Signature Algorithm) are use to create digital signatures.

Sunday, July 28, 2024

Thursday, July 18, 2024

Windows God Mode

God Mode


Here is a great management tool built-in to Windows. Just right click on your desktop to create a new Folder. Name it (with brackets): 
God Mode.{ED7BA470-8E54-465E-825C-99712043E01C}.

All of you Windows management tools will now be located in one app. 


CompTIA CySA+ (Cs0-003) Questions

 CompTIA CySA+ (CS0-003)

We are going to try and add at least five questions on a daily basis. If this tends to be popular we will add questions for Security+, the SY0-701 version.


Acronym flashcards for CompTIA Security+ (SY0-701

 Security+ (SY0-701) Acronym Flashcards


Wednesday, July 17, 2024

CompTIA SY- 701 (Security+) Acronyms

 CompTIA SY0-701 Acronyms

This is a video option for the flashcards for the acronyms for Security+ (SY0-701)


Security+ Mobile Devices 3rd Party Apps

Jailbreaking, Rooting, and Sideloading

Sideloading: Installing an app from a different source than the official app store.
This can be achieved on an Android by enabling the setting.
To do this on an iPhone requires that the device is jailbroken. 

Jailbreaking / Rooting
These methods are used to get elevated privileges to system files on mobile devices. This can be prevented by using MDM (Mobile Device Management).

Jailbreaking: iOS (iPad, iPhone)
Rooting: Android