internetinės paslaugos ir sauga. linas bukauskas

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Internet Services and Security

Vilnius UniversityFaculty of Mathematics and Informatics

dr. Linas Bukauskas

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Outline

● Essentials of internet

● Internet services

● How does internet work?

● Practical examples

– How you are tracked by cookies

– How you can be spied

– other

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History

● 1962 - J.C.R. Licklider of MIT discussing his "Galactic Network" concept

● 1969-1970 – ARPANET 50 kbit/s

● 1971 – Email with 75% of bandwidth

● 1973 – FTP

● 1977 – NVP predecessorof VoIP.

● 1980-1990 – CommercialISP

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History (cont‘d)

● 1983 – TCP/IP

● 1980 – Hypertext concept (Gopher)

● 1980 – FDDI predecessors (CDDI)

● 1990 – web browser Mosaic/Netscape

● 1991 – UUCP/DMAIL in Lithuania (HoP-Seimas)

● 2015 – RAIN Lithuana FiberTo The Home (FTTH)

● Now – 2/3/4G LTE radio

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Broadband Internet

● According to ES/EEC documents from 244 kB/s

– Cisco suggest that: the monthly traffic of the world’s average Internet user will increase from 3.36 gigabytes in 2012 to 24.8 gigabytes by 2015;

– global IP traffic is set to increase from 30.7 exabytes per month to 109.5 exabytes per month from 2011 to 2016.

– 1 EB = 10^18 bytes = 1000000000000000000B

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Broadband Internet FTTH

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OSI Layer

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By design is non-secure

● Internet by design is not secure environment

● 90% of services are simple WebSites

● Additional software is needed „to be secured“

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Layer Encapsulation

BOB

ALICE

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MITM

BOB

ALICEPIRATE

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Global View

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Global View

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National View (FO + GRID)

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Internet Over Sattelite

http://www.thinglink.com

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Practical examples

● How you are tracked what you browse

– Cookies and hidden elements of website ● How you can be spied when you use network

– Mounting a „Man in the middle“ attack● Other

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Conclusions● By design, internet is non-secure place

● Internet connectivity is increasing rapidly

● You have to be aware of „how you work ...“