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dc.contributor.author
Xenakis, Konstantinos
en
dc.date.accessioned
2015-05-29T19:29:53Z
dc.date.available
2015-09-27T05:56:29Z
dc.date.issued
2015-05-29
dc.identifier.uri
https://repository.ihu.edu.gr//xmlui/handle/11544/126
dc.rights
Default License
dc.title
Mapping Greece’s Network Infrastructure
en
heal.type
masterThesis
heal.language
en
heal.access
free
el
heal.license
http://creativecommons.org/licenses/by-nc/4.0
heal.recordProvider
School of Science and Technology, MSc in Information & Communication Technology Systems
heal.publicationDate
2014-11
heal.bibliographicCitation
Xenakis Konstantinos,2014, Mapping Greece’s Network Infrastructure, Master's Dissertation, International Hellenic University
en
heal.abstract
This dissertation was written as a part of the MSc in ICT Systems at the International Hellenic University. This dissertation tries and succeeds to map Greece’s ISP Network Infrastructure with the use of a script that executes numerous traceroutes to Greek IP ranges. The script was hosted in a Linux-Based server located in International Hellenic University’s Infrastructure and was scheduled to run every three minutes for a period of three weeks. During this period the script executed 17376 traceroutes and managed to discover 38 different ISPs both Greek and European and 983 routers in total. Also discovered rout-ers and their connections are visualized as shown in chapter 5. For the visualization of the collected data, Gephi Software and Google Maps were used. Through the visualiza-tion and the collected data, it becomes easier for the reader to understand how Greece’s Internet Topology is designed, the role Greece plays to the World Wide Web and the Redundancy of Greece’s Network Infrastructure. Finally, I would like to express my deepest gratitude to my supervisor, Dr Nick Savage for his excellent guidance, patience and for helping me to deepen into the do-main of ISPs topologies. Last, I would like to thank my mother. She was always supporting me and en-couraging me with her best wishes.
en
heal.tableOfContents
Abstract ........................................................................................................................................ iii 1. Introduction ........................................................................................................................... - 1 - 2. Background-Literature Review ............................................................................................. - 7 - 2.1 Internet Topology ............................................................................................................ - 7 - 2.1.1 Inter-Domain Topology ............................................................................................ - 8 - 2.1.2 Point of Presence (POP Level) ................................................................................. - 8 - 2.1.3 Router level topology ............................................................................................... - 9 - 2.1.4 Internet Routing Policies ........................................................................................ - 11 - 2.2 BGP (Border Gateway Protocol) ................................................................................... - 11 - 2.3 EGP (Exterior Gateway Protocol) ................................................................................. - 13 - 3. Related Work ....................................................................................................................... - 15 - 3.1 Routeviews Archive ...................................................................................................... - 15 - 3.2 Traceroute ...................................................................................................................... - 16 - 3.2.1 How traceroute works ............................................................................................ - 16 - 3.3 Related Traceroute based studies .................................................................................. - 18 - 3.4 Rocketfuel ..................................................................................................................... - 18 - 3.4.1 Path Reductions ...................................................................................................... - 19 - 3.4.2 Ingress Reduction ................................................................................................... - 20 - 3.4.3 Egress Reduction .................................................................................................... - 20 - 3.4.4 Next Hop AS Reduction ......................................................................................... - 20 - 3.4.5 Alias Resolution ..................................................................................................... - 21 - 3.5 AROMA ........................................................................................................................ - 22 - 3.5.1 Selection of Targeted IP Addresses ........................................................................ - 22 - 3.5.2 Probing Servers Selection ...................................................................................... - 24 - 3.5.3 Probing ................................................................................................................... - 24 - 3.5.4 AROMA’s Alias Resolution .................................................................................. - 25 - 3.6 Summary ....................................................................................................................... - 26 - 4. Methodology ....................................................................................................................... - 27 - 4.1 Traceroute ...................................................................................................................... - 27 - v 4.1.1 Script ...................................................................................................................... - 28 - 4.2 Processing the data ........................................................................................................ - 29 - 4.3 Server ............................................................................................................................ - 30 - 4.4 Gephi ............................................................................................................................. - 31 - 4.4.1 Importing data ........................................................................................................ - 31 - 4.4 Autonomous Systems .................................................................................................... - 33 - 4.5 Geo Layout .................................................................................................................... - 34 - 4.6 Adding Map .................................................................................................................. - 36 - 4.7 Grouping ....................................................................................................................... - 38 - 5. Findings ............................................................................................................................... - 41 - 5.1 Internet Exchange Service ............................................................................................. - 41 - 5.2 Routers in numbers ....................................................................................................... - 43 - 5.3 Connectivity .................................................................................................................. - 44 - 5.4 Backbone Topologies .................................................................................................... - 45 - 5.5 POP findings ................................................................................................................. - 47 - 5.5.1 Summary ................................................................................................................ - 49 - 5.6 Router Findings ............................................................................................................. - 50 - 5.7 Redundancy ................................................................................................................... - 50 - 5.7.1 OTE SA Network ................................................................................................... - 50 - 5.7.2 GRNET Network Topology ................................................................................... - 52 - 5.7.3 Summary ................................................................................................................ - 54 - 5.8 Traffic Crossroad .......................................................................................................... - 55 - 6. Conclusions and future works ............................................................................................. - 57 - 6.1 Conclusions ................................................................................................................... - 57 - 6.1.1 Gathering of data .................................................................................................... - 57 - 6.1.2 Processing the data ................................................................................................. - 57 - 6.1.3 Visualization of data .............................................................................................. - 58 - 6.2 Future work ................................................................................................................... - 58 - Bibliography............................................................................................................................ - 59 - APPENDIX ............................................................................................................................. - 61 - Script ................................................................................................................................... - 62 -
en
heal.advisorName
Savage, Prof. Nick
en
heal.committeeMemberName
Savage, Prof. Nick
en
heal.committeeMemberName
Tzortzis, C.
en
heal.committeeMemberName
Koutitas, G.
en
heal.academicPublisher
School of Science &Technology, Master of Science (MSc) in Information and Communication Systems
en
heal.academicPublisherID
ihu
heal.numberOfPages
72
heal.fullTextAvailability
true

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