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Recent trends in the networked services industry (e.g., CDN, VPN, VoIP, IPTV) see Internet Service Providers (ISPs) leveraging their existing network connectivity to provide an end-to-end solution. Consequently, new opportunities are available to monitor and improve the end-to-end service quality by leveraging the information from inside the network. We propose a new approach to detect and localize...
Ideally, an Internet Service Provider offers reachability to the entire Internet. However, it is often claimed (supported by anecdotal evidence) that reachability differences exist between ISPs, with the result that some valid, globally routable IP addresses can be reached from one ISP but not from others. Outdated Bogon filters, specialized services, and regional differences have all been conjectured...
In the Internet, many WS providers offer the same or similar services, and the QoS (quality of service) of WS has become an important method to evaluate and select the services. This paper focuses on providing a new method to rank the web service based on the QoS to get the best available web service. Firstly, the QoS attributes' Independent Components(ICs) are computed to reduce their correlation...
This paper introduces the major focus for the service-oriented provincial-centralized transmission-distribution-integrated GIS platform, its architecture, application deployment and key technology. Based on versioned power system model and graphics repository on Oracle, independent from third-party GIS software, the system provides spatial information application server of real-time performance, network...
This paper presents a new system, called BGPmon, for monitoring the border gateway protocol (BGP). BGP is the routing protocol for the global Internet. Monitoring BGP is important for both operations and research; a number of public and private BGP monitors are deployed and widely used. These existing monitors typically collect data using a full implementation of a BGP router. In contrast, BGPmon...
The DNS security extensions (DNSSEC) added public key cryptography to the DNS, but problems remain in selecting signature lifetimes. A zonepsilas master server distributes signatures to secondary servers. The signatures lifetimes should be long so that a secondary server can still operate if the master fails. However, DNSSEC lacks revocation. Signed data can be replayed until the signature expires...
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