Ask the Experts

Ask the Experts

• What are the best use cases for public cloud services?

  Enterprises increasingly see public cloud services as secure and stable enough for specific non-core applications if they have effective SLAs.  Continue Reading

• Running IPv6 over low-power devices with limited resources

  Expert Silvia Hagen explains what v6LoWPAN does and how it’s used.  Continue Reading

• ICMPv6: New message types and functionalities

  Expert Silvia Hagen explains what ICMPv6 is, and how it differs from ICMPv4.  Continue Reading

• Integrated mobile application, device management best approach

  Administrators don't have to worry about interoperability; integrated mobile application and device management is the best approach.  Continue Reading

• Why do I need to manage my VPN client software?

  Ensuring that the client software itself is up to date is just one of many reasons why it's critical to oversee VPN clients.  Continue Reading

• What security issues arise with IPv6 and IPv4 in a multi-tenant cloud?

  When supporting IPv6 and IPv4 in a multi-tenant cloud, the attack surface for this type of environment is increased, says IPv6 expert Chip Popoviciu.  Continue Reading

• How can cloud providers offer sensitive data protection?

  Cloud expert Mooney Sherman offers tips on how to evaluate various security architectures to provide optimal sensitive data protection in the cloud.  Continue Reading

• Maintaining mobile device security: How to prevent user breaches

  To ensure mobile device security, VPN expert Rainer Enders explains that it is crucial to monitor changed states and block software modifications.  Continue Reading

• Preventing mobile hacking: Must you take precautions?

  Service providers do a good job of blocking mobile hacking -- to a point. VPN expert Rainer Enders offers tips on how to extend device security.  Continue Reading

• Should I use the OpenFlow protocol in software-defined networks?

  The OpenFlow protocol isn't required for SDN, although the Open Network Foundation recommends it, which means networking vendors have options.  Continue Reading

• Why do I need SDN technology?

  SDN is valuable, but uses extend to other parts of the network for increased network flexibility, dynamic traffic flow, decreased latency and QoS.  Continue Reading

• Specialized SDN controllers: Are they necessary?

  An SDN controller, with or without OpenFlow, is not required for a software-defined network, and SDN architecture vendors take different approaches.  Continue Reading

• Is SDN a centralized or distributed network architecture?

  A software-defined network can have a centralized or distributed network architecture in the data center, LAN and WAN, depending on business needs.  Continue Reading

• What is the difference between an overlay network and SDN?

  A software-defined network can be deployed as an overlay network to a physical network or natively as the primary network to improve flexibility.  Continue Reading

• Does software-defined networking require special SDN switches?

  Software-defined networks do not require special SDN switches; instead, vendors offer a variety of SDN controllers, network fabrics and hardware.  Continue Reading