Touring the internet in a TCP sidecar
Touring the internet in a TCP sidecar
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在 TCP sidecar 中游览互联网
DOI：
10.1145/1177080.1177093
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
N. Spring
中科院分区：
文献类型：
--
作者：
Rob Sherwood;N. Spring
一个精确的路由器级拓扑结构的互联网将有利于许多研究领域，包括网络诊断，域间流量工程，覆盖建设。我们提出了TCP Sidecar和乘客，路由器级互联网拓扑发现系统的两个要素。Sidecar透明地将测量探测器注入到非测量TCP流中，而Passenger将TTL限制的探测器与经常被忽略的IP记录路由选项相结合。该组合方法减轻了与基于跟踪路由的拓扑发现相关的问题，包括滥用报告、来自多路径路由的虚假边缘推断、未解决的IP别名、长网络超时以及NAT和防火墙后的链路发现。我们相信，我们是第一个映射项目，以衡量MPLS的使用与MPLS扩展和记录路由行为时，TTL不递减。我们能够在监控通过NAT隧道的TCP连接时发现NAT。在本文中，我们提出了初步的结果，TCP Sidecar和乘客在PlanetLab。我们的实验将测量探针注入到从CoDeeN Web代理项目和从自定义网络爬虫到166，745个网站生成的流量中。
An accurate router-level topology of the Internet would benefit many research areas, including network diagnosis, inter-domain traffic engineering, and overlay construction. We present TCP Sidecar and Passenger, two elements of a system for router-level Internet topology discovery. Sidecar transparently injects measurement probes into non-measurement TCP streams, while Passenger combines TTL-limited probes with the often-ignored IP record route option. The combined approach mitigates problems associated with traceroute-based topology discovery, including abuse reports, spurious edge inference from multi-path routing, unresolved IP aliases, long network timeouts, and link discovery behind NATs and firewalls. We believe that we are the first mapping project to measure MPLS use with ICMP extensions and record route behavior when the TTL is not decremented. We are able to discover NATs when monitoring TCP connections that tunnel through them. In this paper, we present preliminary results for TCP Sidecar and Passenger on PlanetLab. Our experiments inject measurement probes into traffic generated both from the CoDeeN Web proxy project and from a custom web crawler to 166,745 web sites.