Virtual private networks provide two important network security functions to IT administrators. First, they allow the secure interconnection of remote networks, such as connecting branch offices to a corporate headquarters or each other. Second, they provide mobile workers with a mechanism to securely connect from remote locations back to the organization’s network. Learn the purpose of virtual private networks (VPNs), the IPsec protocol and the role of VPN concentrators.
- [Narrator] Virtual Private Networks, or VPNs,…provide two important network security functions…to IT administrators.…First, they allow the secure interconnection…of remote networks such as connecting branch offices…to a corporate headquarters or to each other.…Second, they provide mobile workers…with a mechanism to securely connect…from remote locations back to the organization's network.…VPNs work by using encryption to create…a virtual tunnel between two systems over the internet.…
Everything that enters one end of the tunnel is encrypted,…and then it is decrypted when it exits the other end…of the tunnel.…From the user's perspective, the network appears…to function normally.…But if an attacker gains access to traffic…between the two secure endpoints,…all they see is encrypted information…that they can't read.…VPNs require an endpoint on the remote network…that accepts VPN connections.…Many different devices may serve as VPN endpoints…such as a firewall, router, server,…or a dedicated VPN concentrator.…
All of these approaches provide secure VPN connections,…
Learn about communication and networking best practices, including TCP/IP networking, network security devices, and secure network design and management. Instructor and cybersecurity expert Mike Chapple also includes coverage of converged protocols, network encryption, and wireless networking. You can find Mike's companion study books for this series at the Sybex test prep site and review the complete CISSP Body of Knowledge at https://www.isc2.org/cissp-domains/default.aspx.
- IP addressing
- Switches and routers
- Content distribution networks
- Designing secure networks
- Specialized networking
- Managing secure networks
- Working with virtualized networks like SDNs
- Detecting and preventing network attaches
- Transport encryption
- Wireless networking
- Host security
Skill Level Advanced
CISSP Cert Prep: 2 Asset Securitywith Mike Chapple58m 11s Advanced
1. TCP/IP Networking
2. Network Security Devices
3. Designing Secure Networks
4. Specialized Networking
5. Secure Network Management
6. Virtualized Networks
Port isolation1m 47s
7. Network Attacks
8. Transport Encryption
9. Wireless Networking
10. Host Security
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