IEC: On-Line Education: WPF: Access Mediation: Preserving Network Security and Integrity

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Access Mediation: Preserving Network Security and Integrity

Table of Contents:

Definition and Overview

1. Historical Perspective

2. The Role of Access Mediation

3. System Requirements

4. Technological Benefits

5. Application Scenarios

Self-Test

1. Deregulation and convergence have catalyzed the need for access mediation.

a. true

b. false

2. Any carrier that relies on the PSTN and its SS7 interconnections for service delivery can benefit from access mediation.

a. true

b. false

3. SMS filtering is a function that can be performed by access mediation.

a. true

b. false

4. Current gateway screening standards are adequate for ensuring the network is protected.

a. true

b. false

5. Access mediation is not able to mask protocol differences between networks.

a. true

b. false

6. If system implementation requires a point code, carriers must reconfigure the network for deployment.

a. true

b. false

7. The standards bodies developing SS7 were concerned about protecting the network from harmful outside sources.

a. true

b. false

8. Which is a main benefit or purpose for implementing access mediation?

a. network security

b. enforce interconnect agreements

c. prevent fraud

d. all of the above

9. Access mediation devices should provide both _______ and ______ inspection.

a. syntax and header

b. content and node

c. syntax and content

d. message and node

10. What is the key difference between gateway screening and access mediation?

a. access mediation looks at the message header while gateway screening checks message syntax and content.

b. gateway screening devices are limited to analyzing traffic based on the message header, while access mediation enables carriers to examine message syntax and content.

c. there is no difference. Gateway screening and access mediation is the same thing.

d. all of the above

11. ISUP traffic is being sent at random from a VoIP interconnection using trunk circuit values that do not exist. Which example demonstrates how access mediation can be used to resolve this problem?

a. The recipient carrier can block those messages, allowing only the traffic permitted by the interconnect agreement.

b. The network operations manager alerts the provider they are sending harmful messages and tells them not to do it again.

c. Access mediation does not apply to this scenario.

12. What type of traffic can access mediation control?

a. ISUP

b. AIN

c. SMS

d. all of the above

13. Access mediation devices act as intelligent_____.

a. gateways

b. routers

c. firewalls