'Traceroute' diaporamas de présentation

Module 8: Investigative Tools

Module 8: Investigative Tools INVESTIGATIVE TOOLS OVERVIEW Ping Traceroute Iperf BWCTL NDT TCPDUMP TCPtrace Wireshark (Ethereal) PING HOW DOES PING WORK? Makes use of Internet Control Message Protocol (ICMP) messages Sends timed ICMP ECHO_REQUEST packets

1.19k views • 79 slides

More IP

More IP. Fragmentation, NAT, IPv6, MPLS. Readings. IP format, fragmentation - 4.1.2 ICMP - 4.1.7 NAT - side bar, pp. 327-329 IPv6 - 4.3.5 MPLS - 4.5. IP Packet Format. 0. 4. 8. 16. 19. 31. TOS. Length. Version. HLen. Ident. Flags. Offset. TTL. Protocol. Checksum.

651 views • 44 slides

Network Management

Network Management. Richard Mortier Microsoft Research, Cambridge (Guest lecture, Digital Communications II). Overview. Introduction Abstractions IP network components IP network management protocols Pulling it all together An alternative approach. Overview. Introduction

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Internet Routing (COS 598A) Today: Root-Cause Analysis

Internet Routing (COS 598A) Today: Root-Cause Analysis. Jennifer Rexford http://www.cs.princeton.edu/~jrex/teaching/spring2005 Tuesdays/Thursdays 11:00am-12:20pm. Outline. Network troubleshooting Motivation for network troubleshooting Investigating from the edge vs. inside Active probing

540 views • 40 slides

Example of Implementation

Example of Implementation. Kumpol Luengpetngam Telecommunication Division, RTH:Bangkok E-mail : kumpol@metnet.tmd.go.th. Implementation of TCP/IP at RTH Bangkok.

449 views • 35 slides

Scalable and Accurate Identification of AS-Level Forwarding Paths

Scalable and Accurate Identification of AS-Level Forwarding Paths. Z. Morley Mao University of Michigan, Ann Arbor. Joint work with David Johnson, Jennifer Rexford, Jia Wang (AT&T-Research), and Randy Katz (UC Berkeley). Path packets traverse through the Internet. IP Forwarding Path.

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Provider Backbone Bridges with Traffic Engineering (PBB-TE) aka PBT

Provider Backbone Bridges with Traffic Engineering (PBB-TE) aka PBT. D. Kent Stevens Western Region Optical Architect kesteven@nortel.com 714-803-1050. Next Gen Ethernet Wish List. Ethernet as used today is lowest cost but has several challenges: MAC explosions Service Scalability

531 views • 26 slides

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Measuring the Internet: Featuring Traceroute

Measuring the Internet: Featuring Traceroute. Based on slides by Yihua He (PhD UCR 2007). Roadmap. Internet route: router and AS level Review of how traceroute works Possible ways to do IP->AS Hands-on experience with BGP tables What can traceroute tell us besides reachability?

436 views • 24 slides

Measuring the Autonomous System Path Through the Internet

Measuring the Autonomous System Path Through the Internet. Jennifer Rexford Internet and Networking Systems AT&T Labs - Research; Florham Park, NJ http://www.research.att.com/~jrex. Joint work with Z. Morley Mao, David Johnson, Jia Wang, and Randy Katz.

395 views • 23 slides

NANOG panel, 6/11/2002

NANOG panel, 6/11/2002. Mike Lloyd CTO. ISP D. ISP E. ISP F. ISP A. ISP B. ISP C. Internet. Who Buys This, and Why? Enterprise Web Sites & Hosters. Performance gains Brownout avoidance Transit ISP cost savings w/o performance sacrifice Operational cost savings. Headquarters.

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Avoiding traceroute anomalies with Paris Traceroute

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Issues with Inferring Internet Topological Attributes

Issues with Inferring Internet Topological Attributes. Lisa Amini ab , Anees Shaikh a , Henning Schulzrinne b a IBM T.J. Watson Research Center b Columbia University. Internet Mapping. Goal Create mathematical and graph theoretic models of the Internet detect pathologies

228 views • 14 slides

SANE: A Protection Architecture for Enterprise Networks

SANE: A Protection Architecture for Enterprise Networks. Offense by: Amit Mondal Bert Gonzalez . SANE or INSANE?. Single-point-of-failure. SANE design essentially reduces the whole network to a single DC. If this DC fails or is compromised, the entire network is at stake.

220 views • 13 slides

Introduction to Raw Sockets

Introduction to Raw Sockets. TCP/IP Stack. 67 Bootp DHCP. 69. 25. 21. 23. 53. 161. TCP Port #. UDP Port #. EGP 8. OSPF 89. 6. 17. Port address. protocol. 1. 2. IP address. frame type. MAC address. What can raw sockets do?. Bypass TCP/UDP layers

341 views • 13 slides

Operations and Maintenance Next Generation Requirements

Operations and Maintenance Next Generation Requirements. draft-amante-oam-ng-requirements-01 Shane Amante Alia Atlas Andrew Lange Danny McPherson March 10, 2008. Overview. Why use LAG, ECMP? Background Use Cases Intra- vs. Inter-AS OAM Requirements Path Capabilities.

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IPv6 Deployment Plan

284 views • 10 slides

Traceroute Program

Traceroute Program. Introduction - Problem. Wich route do my packets follow towards my destination?. Traceroute used packets. Traceroute program uses : UDP packet destination port > 30000 small TTL ICMP time exceeded ICMP port unreachable error. traceroute 131.107.7.29. TTL=0. TTL=0.

627 views • 6 slides

Probing the Internet

Probing the Internet Keng Siau University of Nebraska-Lincoln Ping One of the simplest probing tools ping www.netbook.cs.purdue.edu Can be used to test whether a remote computer is alive Ping sends a message to specified computer wait a short time for a response

638 views • 4 slides