Netzsicherheit at TU München

Flashcards and summaries for Netzsicherheit at the TU München

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Study with flashcards and summaries for the course Netzsicherheit at the TU München

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

What is a communication protocol?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

What types of grammar have undecidable equivalence?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

What is a weird machine?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Why sould a parser be only of grammar type 2 or 3?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Can an attacker successfully complete a TCP 3-way handshake?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Can an attacker with spoofed source address successfully complete a TCP 3-way handshake?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Can an attacker with spoofed source address, limited by position such that she does not receive answers to spoofed packets successfully complete a TCP 3-way handshake?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Definition Network Middleboxes

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

What is a security policy?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

What is a security mechanisms?

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Definition of secure

Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Corrolation between security policy and mechanisms

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Exemplary flashcards for Netzsicherheit at the TU München on StudySmarter:

Netzsicherheit

What is a communication protocol?

Definies a´the procedure and format of exchanged messages (e.g. IP, TCP, HTTPS)

Netzsicherheit

What types of grammar have undecidable equivalence?

Type 1 (context-sensitive) and Type 0 (recurively enumerable)

Netzsicherheit

What is a weird machine?

A weird machine is a machine programmable by an attacker, that was not intended or expected by the programmer

Netzsicherheit

Why sould a parser be only of grammar type 2 or 3?

Because otherwise, a weird machine may be possible

Netzsicherheit

Can an attacker successfully complete a TCP 3-way handshake?

Yes

Netzsicherheit

Can an attacker with spoofed source address successfully complete a TCP 3-way handshake?

Yes

Netzsicherheit

Can an attacker with spoofed source address, limited by position such that she does not receive answers to spoofed packets successfully complete a TCP 3-way handshake?

No

Netzsicherheit

Definition Network Middleboxes

Any intermediary box, performing functions apart from standard functions of an IP router on the data path between a source host and destination host (e.g. transformations, inspections and filtering)

Netzsicherheit

What is a security policy?

A security policy, a specific statement of what is and is not allowed, defines the system’s security.

Netzsicherheit

What is a security mechanisms?

Security Mechanisms enforce the policies; their goal is to ensure that the system never enters a disallowed state

Netzsicherheit

Definition of secure

A system is secure if, started in an allowed state, always stays in states that are allowed.

Netzsicherheit

Corrolation between security policy and mechanisms

The policy defines security, the security mechanisms enforces it

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