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Content delivery network (CDN) operator Limelight Networks is expanding its Cloud Security Services portfolio, with its latest addition being a web application firewall (WAF) service.


  • The WAF service is a logical extension of Limelight’s Cloud Security Services portfolio for its existing CDN customers, all of whom have websites and web applications to protect.

Features and Benefits

  • Explains how the WAF market has evolved and the problems WAFs seek to address.
  • Describes the move from on-premise to cloud-based WAFs.

Key questions answered

  • What are the advantages of a cloud-based WAF vis-à-vis an on-premise one?
  • How broadly will Limelight be offering its WAF service?

Table of contents


  • Catalyst
  • Ovum view
  • Key messages


  • Recommendations for enterprises

WAFs scan web apps’ inbound and outbound traffic

  • WAFs started out on-premise
  • More recently they have moved into the cloud

Limelight enters the WAF services market

  • Rules are propagated across all WAF nodes automatically
  • Limelight’s service is more focused than on-premise WAFs

The WAF service is one of several Limelight security services

  • Cloud Security Services focuses mainly on media companies
  • Limelight will address a broader market for DDoS mitigation


  • Further reading
  • Author

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