The Great DNS Wall of China
نویسندگان
چکیده
Internet freedom advocacy sites [1] have studied and documented these censorship practices, enumerating the techniques employed by the censoring bodies. For example, censors block the IP addresses of controversial websites, inspect TCP packet exchanges for keywords and tamper with DNS records. These advocacy sites have already catalogued the types of sites that are censored and the means by which censorship is employed; this paper focuses specifically on DNS tampering.
منابع مشابه
Empirical Seismic Vulnerability and Damage of Bottom Frame Seismic Wall Masonry Structure: A Case Study in Dujiangyan (China) Region
In order to understand the seismic performance and mechanism of bottom frame seismic wall masonry structure (BFSWMS) and its vulnerability in empirical seismic damage, based on the statistical and numerical analysis of the field seismic damage observation data of 2178 Dujiangyan structures in the Wenchuan great earthquake urban of China on May 12, 2008, a non-linear function model between the s...
متن کاملTowards a Comprehensive Picture of the Great Firewall's DNS Censorship
China’s Great Firewall passively inspects network traffic and disrupts unwanted communication by injecting forged DNS replies or TCP resets. We attempted to comprehensively examine the structure of the DNS injector, using queries from both within and outside China. Using these probes, we were able to localize the DNS monitors’ locations, extract the firewall’s DNS blacklist of approximately 15,...
متن کاملEfficacy of Dynamic Neuromuscular Stabilization Breathing Exercises on Chest Mobility, Trunk Muscles, and Thoracic Kyphosis: A Randomized Controlled 6-Week Trial
Objectives: Dynamic Neuromuscular Stabilization (DNS) approach evaluates and activates the spinal stabilizers to optimize the performance of posture and respiratory system. This study investigated the effects of DNS breathing exercises on upper and lower chest wall mobility (UCM and LCM), trunk extensor endurance, and thoracic kyphosis in a group of sedentary students with poor posture. Method...
متن کاملOverview of Direct Numerical Simulation of Particle Entrainment in Turbulent Flows
An overview of removal and re-entrainment of particles in turbulent flows is presented. The procedure for the direct numerical simulation (DNS) of the Navier-Stokes equation via a pseudospectral method for simulating the instantaneous fluid velocity field is described. Particle removal mechanisms in turbulent flows in a duct are examined and effects of the near-wall coherent eddies on the parti...
متن کاملInvestigation and Analysis of Empirical Field Seismic Damage to Bottom Frame Seismic Wall Masonry Structure
To understand the seismic damage characteristics of bottom frame-wall buildings and to study their seismic performance, the seismic damage outcomes of bottom frame-wall structures in Du jiang weir by the Wen chuan earthquake on May 12,2008, China were field observed and studied. The assesment of the seismic damage to the bottom frame-wall masonry in Du jiang weir urban showed that the damage t...
متن کامل