Beyond the Radio: Illuminating the Higher Layers of Mobile Networks

  • Vallina-rodriguez N
  • Sundaresan S
  • Kreibich C
 et al. 
  • 42

    Readers

    Mendeley users who have this article in their library.
  • 20

    Citations

    Citations of this article.

Abstract

Cellular network performance is often viewed as primarily dominated by the radio technology. However, reality proves more complex: mobile operators deploy and configure their networks in different ways, and sometimes establish network sharing agreements with other mobile carriers. Moreover, regulators have encouraged newer operational models such as Mobile Virtual Network Operators (MVNOs) to promote competition. In this paper we draw upon data collected by the ICSI Netalyzr app for Android to develop a characterization of how operational decisions, such as network configurations, business models, and relationships between operators introduce diversity in service quality and affect user security and privacy. We delve in detail beyond the radio link and into network configuration and business relationships in six countries. We identify the widespread use of transparent middleboxes such as HTTP and DNS proxies, analyzing how they actively modify user traffic, compromise user privacy, and potentially undermine user security. In addition, we identify network sharing agreements between operators, highlighting the implications of roaming and characterizing the properties of MVNOs, including that a majority are simply rebranded versions of major operators. More broadly, our findings highlight the importance of considering higher-layer relationships when seeking to analyze mobile traffic in a sound fashion.

Author-supplied keywords

  • an-
  • cellular networks
  • dns
  • http header injection
  • http proxy
  • middleboxes
  • mobile networks
  • mobile traffic
  • pep
  • privacy

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Narseo Vallina-rodriguez

  • Srikanth Sundaresan

  • Christian Kreibich

  • U C Berkeley

  • Carrier-grade Nat

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free