Podcast
Questions and Answers
What was the deliberate design decision in 3G regarding user traffic and signaling traffic?
What was the deliberate design decision in 3G regarding user traffic and signaling traffic?
- Both user and signaling traffic were considered equally security critical.
- User traffic was considered more security critical than signaling traffic.
- User traffic was not considered at all in terms of security.
- Signaling traffic was considered more security critical than user traffic. (correct)
How is a security breach in an SGSN or RNC in one 3G network different from EPS?
How is a security breach in an SGSN or RNC in one 3G network different from EPS?
- Both 3G and EPS networks are equally vulnerable to security breaches.
- There is no difference between the impact of a breach in 3G and EPS networks.
- In 3G, a breach affects all 3G networks, while in EPS, the impact is limited to the breached network.
- In 3G, a security breach has no impact on other 3G networks, while in EPS, it may affect other networks. (correct)
What was the key improvement introduced in EPS to address the issue of session keys being handed from one RNC to another?
What was the key improvement introduced in EPS to address the issue of session keys being handed from one RNC to another?
- Cryptographic network separation of authentication material (correct)
- Introduction of session keys CK, IK
- Handling session keys at the edge of access networks
- Assumption that an RNC compromise would be rare
What is the primary security focus under Network access security in 5G?
What is the primary security focus under Network access security in 5G?
How does handling of session keys differ between 3G and EPS networks?
How does handling of session keys differ between 3G and EPS networks?
What was the reason for introducing forward security in handovers in EPS networks?
What was the reason for introducing forward security in handovers in EPS networks?
What are the temporary identifiers used in 3G systems and 4G/5G systems respectively?
What are the temporary identifiers used in 3G systems and 4G/5G systems respectively?
In which situation is authentication through temporary identifiers not possible?
In which situation is authentication through temporary identifiers not possible?
What kind of attacks are known as 'IMSI catching' attacks?
What kind of attacks are known as 'IMSI catching' attacks?
What has the 3GPP decided to address regarding IMSI Catchers in 5G?
What has the 3GPP decided to address regarding IMSI Catchers in 5G?
In 5G security specifications, what is not allowed over the radio interface?
In 5G security specifications, what is not allowed over the radio interface?
What does an active man-in-the-middle adversary aim to achieve in relation to temporary identifiers?
What does an active man-in-the-middle adversary aim to achieve in relation to temporary identifiers?
Why is the use of a digital air interface important in GSM?
Why is the use of a digital air interface important in GSM?
What security feature in GSM identifies the Mobile Equipment (ME) uniquely?
What security feature in GSM identifies the Mobile Equipment (ME) uniquely?
In GSM, how is the Mobile Subscriber authenticated?
In GSM, how is the Mobile Subscriber authenticated?
What is the main function of the VLR in GSM networks?
What is the main function of the VLR in GSM networks?
Why is the frequent updating of Temporary Mobile Subscriber Identity (TMSI) important for GSM subscribers?
Why is the frequent updating of Temporary Mobile Subscriber Identity (TMSI) important for GSM subscribers?
