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LOGO TULIPTrilateration Utility for Locating IP addresses

Presented ByFaran Javed

BIT-5

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Project Committee

Advisor: Prof. Dr. Arshad Ali1

Co-Advisor: Mr. Umar Kalim2

Member: Mr. Azhar Maqsood3

Member: Mr. Imran Daud4

External Advisor: Dr R. Les Cottrell5

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MotivationDynamic Geolocation solely based on delay

measurements.

Help identify hosts that have proxies

To help determine from where to get a replicated service

Useful for security to pin-point the location of a suspicious host

Identify anomalies in the PingER database

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PingER

PingER – Ping end-to-End ReportingName given to IEPM projectUsed to monitor end-to-end performance of

Internet links

pingER historical graphs

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PingER Architecture

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Aim/Problem Statement

To geolocate a specified target host (identified by domain name or public IP address) using only ping RTT delay measurements to the target from reference landmark hosts whose positions are well known.

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Geo IP

Mainly realize on end users input.

Data acquired from various websites that offer end users membership.

Further applies various techniques including triangulation.

Conflicts are resolved manually.

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Literature Review 1/3CBG – Constraint Based Geolocation [bamba]

Works only within US Uses 90 reference landmarks Marks a possible region where the host may be

located Currently not available

NetGeo Stores location of each AS in a plain text file Database based approach. Prone to get outdated Needs updating every Saturday

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Literature Review 2/3

Octant Efficient within US only Similar to CBG

DNS LOC Rarely available Info provided by the network administrators

themselves

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Literature Review 3/3

Whois Gets outdated Database needs to be updated regularly

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Proposed Solution

Final (Lat , Lon)Final (Lat , Lon)Iterative

Correction

Apply Trilateration

Delay to Distance

Conversion

Take Min RTT

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Adjusted Alpha values

Methodology Plotted a scatter plot between distance in km

& minRTT (ms)

The data set were the landmarks

Drew the tightest upper bound on distances

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Adjusting Alpha

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Equation for the line representing the tightest upper bound

Two points on the line are i- origin & ii- the point with highest value of ratio Dist / minRTT

Line is represented by the equation Y = mx + b Y intercept is zero hence b = 0 M = y2-y1 / x2-x1; y1 = 0 & x1 = 0 [origin] M = y2 / x2; y2=Distance(km);x2=minRTT(ms)

Y = m*x ; Distance = m * minRTTDistance = alpha * minRTTM = suggested alpha

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Iterative correction of the locationminRTT = propagation delay + extra delay

(due to extra circular routes)∆T measured= ∆t + ∆t0(Pseudo -distance)PD = ∆Tmeasured.α(Actual distance)D = ∆T.αPD = (∆T+∆T0).αPD = D+∆T0. α …. (1)

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Iterative correctionD = actual distance from the landmark.C = speed of lighta = X(c) i.e. Speed of digital info in fiber optic

cableX = factor of c with which digital info travels in

fiber optic cable.∆T = actual propagation delay along the greater

circle router/paths.∆T0 = the extra delay causing overestimation.PD = pseudo distance

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Graphically:

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LandmarksH: hostL1: Landmark 1L2: landmark 2L3: landmark 3D1=√ (XL1-Xh) 2 + (YL1-Yh) 2 ….. (2)FROM (1) & (2)PD1=√ (XL1-Xh) 2 + (YL1-Yh) 2 + α.∆t0….. (A)Similarly for other 2 landmarks:PD2=√ (XL2-Xh) 2 + (YL2-Yh) 2 + α.∆t0.. (B)PD3=√ (XL3-Xh) 2 + (YL3-Yh) 2 + α.∆t0..(C)

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Linearize the equation

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Contd …Considering the simplified first partF(x) = f(x0) + f`(x0) (x-x0)Put (x-x0=∆X)F(x) = f(x0) + f`(x0) ∆X………… (3)Hence to compute the original value of X an

arbitrary value x0 is required, this is done by simple Trilateration.

We know that Hx =Xest+∆X……. (D)HY =Yest+∆Y…….. (D)AlsoEstDi=√ (Lhi-Xest+ (Hy-Yest) 2 ……….. (4)

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Contd …

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Contd …

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Solution from (4) is put in eq(D) to get new estimations.

Hx, HY becomes the new estimated position.

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System Architecture

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For each point calculate alpha =distance/minRTT

then calculate the median and Inter-quartile Range of the alphas.

In the following case study we got 46.61=median and IQR=15.31.

For this data median alpha ~ 46.5km/ms and IQR ~15.6km/ms or IQR/Median~ 33% or ~ +-16%.

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Alpha vs DistanceAlpha vs Distance from SLAC

y = 3.3609x0.3301

R2 = 0.567

0.1

1

10

100

1 10 100 1000 10000

Distance from SLAC (km)

Alp

ha (k

m/m

s)

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Alpha Vs min RTTAlpha vs. min_RTT from SLAC y = 14.026x0.2593

R2 = 0.1861

0.1

1

10

100

0.1 1 10 100 1000

min_RTT (ms)

Alp

ha (k

m/m

s)

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Hence if we can calculate error in alpha we can calculate error in distance estimation and hence in the location estimate.

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Tiering Approach

The purpose of this study is to investigate the effectiveness of tiering for TULIP

i.e we have a set of primary landmarks tier0 which will narrow down the target location to being in a particular region and then a denser set of secondary tier1 landmarks in the discovered region that can be used to get more accurate results.

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Benefits

The use of tiering should enable us to reduce the network traffic (number of landmarks pinging a target) while retaining the accuracy of using all landmarks.

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Alpha vs Distance (SLAC)

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Alpha vs MinRTT (SLAC)

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TULIP Results

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

kyoto-u.ac.jp200.37.46.80w

ww

.sustech.eduglobalnet.cmw

ebster.ac.thrw

andaparliament.gov.

rol.net.mv

ww

w.ust.edu.sd

seua.amyum

it.amw

ww

.institutokilpatricksyr.eduknu.ac.krfcien.edu.uyuiuc.eduasu.edusara.nlaspu.edu.jona.infn.itm

ercury.uvic.calattice.act.aarnet.net.auhanarotel.nethellenic.ac.zww

ww

.mssf.m

nlatinalfuheis.edu.jouaeu.ac.aem

cbs.edu.omnovagest.co.aocad.zju.edu.cnam

s.ac.irum

ich.eduw

isc.edufinance.gov.m

vcaltech.educaltech.edubrandeis.edualfred.eduw

isc.edubrow

n.eduv-w

ww

.ihep.ac.cnw

ww

.region.amcm

sfq.edu.ecw

ww

.ecnu.edu.cnlbl.goves.netcornell.edu81.199.21.194auth.grlbl.govpdsfgrid4.nersc.govusb.veaau.edu.etm

it.edurhnet.iscam

net.cmuoregon.eduuoregon.edubu.edudesy.dem

ultinet.afping.if.usp.brru.ac.zaarizona.eduw

ww

.intercollege.ac.cw

ww

.fulbright.org.cyhaw

aii.edubu.eduprinceton.eduprinceton.eduprinceton.edudesy.de130.207.244.56m

su.rustsci.eduohio-state.edustanford.eduw

ww

.ifj.edu.plw

ww

.cyfronet.krakowin2p3.frucsc.edukotis.netthrunet.co.krcau.ac.krm

ps.ohio-state.eduiepm

-bw.cesnet.cz

stanford.edups.uci.eduutk.eduihep.ac.cncm

u.edupurdue.educaida.orgvix.comw

ww

.vodafone.com.m

triumf.ca

snowm

ass2001.orgufrj.brcbpf.brns.cybercentro.com

.svcir.red.svum

n.eduutexas.eduornl.govornl.govrutgers.eduuchicago.edulattice.w

a.aarnet.net.adigex.netnic.nislac.stanford.eduslac.stanford.edulahoreschoolofeconom

iw

ww

.hrfoundation.bww

ashington.eduw

ashington.edum

fa.gov.bnkazrena.kzpinger.bnl.orgw

ww

.msu.ru

rftpexp.rhic.bnl.govw

ww

.irk.ruutdallas.eduindo.net.idcern.chleonis.nus.edu.sgw

ww

.tsc.rucern.chw

ww

.monash.edu.m

yhepi.edu.geindiana.edusci.amindiana.edunyu.educisco.comjlab.orgw

ww

.runnet.ruaip.orgub.esd.root-servers.netucsd.eduanl.govanl.govanl.govb.root-servers.net82.137.192.62ucla.eduucla.eduprim

e.edu.npllnl.govbo.cache.nlanr.netpsi.netns.fq.edu.uyorange.cmgnt4.grid.m

an.ac.ukperl-pbdsl.stanford.eduece.rice.eduns1.retina.aruoi.grsunysb.eduw

ww

.psi.gov.psm

t.net.mk

just.edu.jokornet.ne.krkreonet.re.krnetsgo.comdirecpc.compgis.lkw

ww

.utl.co.ughaw

aii.educbinet.biw

ww

.eng.bellsouth.new

aikato.ac.nzlanl.govnic.lkbham

.ac.ukucr.educache.kr.apan.netkaist.ac.krnoc.kr.apan.netru.ac.bdhokudai.ac.jpjp.apan.netm

.root-servers.netkyushu-u.ac.jpshinbiro.netbunda.unim

a.mw

credis.rokek.jpkek.jpw

ww

.uma.rnu.tn

uta.edu

Distance GeoIP

Distance TULIP

Distance Host Info

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Cumulative Distribution

0%

20%

40%

60%

80%

100%

0 5000 10000 15000 20000

Distance (km)

Cum

ulat

ive

Dis

trib

utio

n

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ConclusionsTULIP offers coarse grain accuracy and

can confirm location up to city level.

Total of 14 differences ranging from 5,000 to 13,000 were inaccuracies in PingER database.

Further accuracy can be increase by increasing location data of landmark and a much careful landmark selection

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Applicability of TULIP

TULIP is being used as the location estimation service for Phantom OS to assist in making VO’s autonomously

Being Used by SLAC to detect Anomalies in PingER database

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Problem Statement by Phantom OS PhantomOS resource discovery scheme is based on a two-tier based super

peer based architecture. The lowest tier is a machine level granularity sub-grid, which consists of machines that have good network connectivity between them, analogous to a traditional cluster. Each sub-grid is represented by a super-peer, which is the most available machine within the vicinity of the sub-grid. At the top-most tier the granularity is in terms of sub-grids, and these are grouped into regions depending on geographical proximity of the super peers. The regions are represented by a region peer. A virtual organization (VO) in this system can be at any level: it can consist of individual machines or be an aggregation of entire sub grids or of entire regions. Interactive applications will be handled at a machine-level VO, whereas large-scale grid applications will require aggregations of entire sub grids.

With TULIP in PhantomOS, super peers will also provide the landmarks. New nodes will locate the nearest landmark and map to a subgrid which is spatially closest to them. Similarly Regions will be created by associating Subgrids to spatially close neighbouring subgrids. This information will also be provided by TULIP.

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ChallengesIncrease accuracy in regions with poor network

infrastructure

Satellite links

Circular routes

Best Landmark Selection

Security Considerations

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AchievementStood First in All Asia

Software Competition, Softec, Held at Fast Lahore.

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Acknowledgment by SLAC daily newsletter

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Winner at NIIT Open House

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Future Directions

Centralized Reflector

Complete Feasibility Analysis for Tiering approach

Detailed visualization tools.

Study on most suitable number of ping packets

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References [1] Constraint-Based Geolocation of Internet Hosts Bamba Gueye, Artur Ziviani, Mark

Crovella and Serge Fdida,

[2] Scale-free behavior of the Internet global performance R. Percacci1 and A. Vespignani2, Published online 7 May 2003 – c EDP Sciences, Societ`a Italiana di Fisica, Springer-Verlag 2003

[3] Geometric Exploration of the Landmark Selection Problem Liying Tang and Mark Crovella Department of Computer Science, Boston University, Boston, MA 02215 flitang,crovellag@cs.bu.edu

[4] An Empirical Evaluation of Landmark Placement on Internet Coordinate Schemes Sridhar Srinivasan Ellen Zegura Networking and Telecommunications Group College of Computing Georgia Institute of Technology Atlanta, GA 30332, USA Email: {sridhar,ewz}@cc.gatech.edu

[5] A Network Positioning System for the Internet, T. S. Eugene Ng, Rice University, Hui Zhang, Carnegie Mellon University.

[6] Towards IP Geolocation Using Delay and Topology Measurements Ethan Katz-Bassett John P. John Arvind Krishnamurthy David Wetherall† Thomas Anderson Yatin Chawathe‡

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Demo

Demo of current progress available athttp://www.slac.stanford.edu/comp/net/wan-mon/tulipOrhttp://maggie.niit.edu.pk/newwebsite/tulip

Progress details also available at the Maggie wiki

http://maggie2.niit.edu.pk/wiki

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Previous value of alpha

Speed of digital information in fiber optic cable = 2/3 * c

Since we have two side delay Alpha = 2/3 * c/2Put c = 3 * 108

m/s

We get alpha = 100 km/ms

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Haversine Formula The haversine formula is an equation important in navigation,

giving great-circle distances between two points on a sphere from their longitudes and latitudes.

For two points on a sphere (of radius R) with latitudes φ1 and φ2, latitude separation Δφ = φ1 − φ2, and longitude separation Δλ, where angles are in radians, the distance d between the two points (along a great circle of the sphere; see spherical distance) is related to their locations by the formula: