Assessment of cyber attacks influence over internet network/Kibernetiniu ataku itakos interneto tinklui tyrimas

The objective of the study is to prepare model to measure the impact of a cyber attack on the Internet network infrastructure, and identify the weakness components of network. As a result of the study virtual Lithuanian Internet network model created and several different scenarios of cyber attacks prepared and tested. During the tests of the attack that generated traffic flood from international AS to the Lithuanian network infrastructure, 3 AS (nodes) and 4 interconnection lines was found that had the maximum subsequences. Other attacks targeting separate interconnection node of the network infrastructure, resulted that network was able to reroute the traffic. Ill. 6, bibl. 10 (in English; abstracts in English and Lithuanian). Tyrimo tikslas--parengti modeli, kuriuo butu galima ivertinti kibernetiniu ataku poveiki Lietuvos interneto tinklo infrastrukturai ir nustatyti labiausiai pazeidziamus mazgus ir linijas tinkle. Sudarytas virtualus Lietuvos interneto tinklo modelis bei paruosti ir isbandyti skirtingi kibernetiniu ataku scenarijai. Atliekant bandymus generuojant duomenu srautu ataka is tarptautiniu AS nukreipta i Lietuvos tinklo infrastruktura, nustatyti trys AS (mazgai) ir keturios jungiamosios linijos, kurios pasieke galimybiu ribas. Kiti ataku scenarijai, nukreipti i atskirus tinklo infrastrukturos mazgus, leme, kad tinklas sugebejo akumuliuoti duomenu srautus. Il. 6, bibl. 10 (anglu kalba; santraukos anglu ir lietuviu k.).