Network Security Quick Facts

What encryption mode does WPA2 use?

Counter mode.

What type of cipher does TKIP use?

RC4, a streaming cipher.

Does IKE provide confidentiality for payload data?

No. IKE is not used for payload confidentiality.

What cipher mode is associated with TLS?

Cipher Block Chaining (CBC).

What is HTTPS based on?

TLS

Since HTTPS is based on TLS, what encryption mode may it indirectly use?

Cipher Block Chaining (CBC)

Is HTTP encrypted?

No. HTTP does not provide encryption.

What security services does WPA2 provide?

Authentication, Authorization, and Data Confidentiality.

What security services does TKIP provide?

Message Integrity and Data Confidentiality.

What security services does IKE provide?

Authentication and Integrity.

What security services does TLS provide?

CIA: Confidentiality, Integrity, and Availability.

What security services does HTTPS provide?

CIA: Confidentiality, Integrity, and Availability.

What is EAP used for in WPA?

EAP is part of WPA and is used for authentication between the Access Point (AP) and Authentication Server (AS).

What security mechanism does ESP provide to protect against replay attacks?

ESP provides replay protection through sequence numbers. Duplicates numbers that are already received are dropped

What does IKE use to help protect against certain attacks?

Cookies.

Shannon Entropy Formula

Shannon Entropy Formula (Uniform)

log2(N)

Which Protocol is used by WPA and WPA2 respectively?

TKIP and CCMP

IPSec Protocol Stack

IKE, ESP

WPA2 Protocol Stack

TKIP/CCMP, EAP

TLS Protocol Stack

Handshake Protocol, Record Protocol