On the Internet today, a growing number of QoS sensitive network applications exist, such as VoIP, imposing more stringent requirements on ISPs besides the basic reachability assurance. Thus, the demand on ISPs for Service Level Agreements (SLAs) with better guarantees is increasing. However, despite over provisioning in core ISP networks, resource contention still exists leading to congestion and associated performance degradations. For example, residential broadband networks rate-limit or even block bandwidth intensive applications such as peer-to-peer \ufb01le sharing there by violating network neutrality. In addition, traf\ufb01c associated with speci\ufb01c applications, such as Skype, could also bed is criminated against for competitive business reasons. So far, little work has been done regarding the existence of traf\ufb01c discrimination inside the core of the Internet. Due to the technical challenges and widespread impact, it seems somewhat inconceivable that ISPs are performing such \ufb01ne grained discrimination based on the application content. Our study is the \ufb01rst to demonstrate evidence of network neutrality violations within backbone ISPs. We used a scalable and accurate monitoring system\u2013 NVLens \u2013 to detect traf\ufb01c discrimination based on various factors such as application types,previous-hop, and next-hop A Ses. We discuss the implication of such discrimination and how users can counter such unfair practices.<\/p>\n","protected":false},"excerpt":{"rendered":"
On the Internet today, a growing number of QoS sensitive network applications exist, such as VoIP, imposing more stringent requirements on ISPs besides the basic reachability assurance. Thus, the demand on ISPs for Service Level Agreements (SLAs) with better guarantees is increasing. However, despite over provisioning in core ISP networks, resource contention still exists leading […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":[{"type":"user_nicename","value":"yingzh"},{"type":"text","value":"Z. 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