Skip to main content

Denial-of-Service Attacks

One of the popular methods of denial-of-service (DoS) attacks on a database server in a peer-to-pper network is by creating a 'UDP packet storm' on the server. The effect is an attack on one host causes that host to perform poorly.

(When it comes to moving all that information across the Internet there is not only one choice when it comes to transport protocols. There are two. Namely, TCP and UDP. In this article we will look at the User Datagram Protocol, aka UDP. Don Parker)

An attack between two hosts can cause extreme network congestion in addition to adversely affecting host performance. When a connection is established between two UDP service, each of which produces a very high number of packets. This causes packet flooding leading to a denial of service on the machines where the services are offered.

Distributed denial-of-service (DDoS) attack is another form of threat to database security in a peer-to-peer network. These attacks involve breaking into thousands of computers in a peer-to-peer network by following a few coordinated steps, taking control over those computers by installing 'root-kit' programs that take over system administrator privileges to keep other administrative users from being able to fnd the intruder. DDoS attacks are primarily targeted at shared computing resources such as database servers, Web servers, network bandwidth, router processing capability, and so forth.
Labels:

Comments

Post a Comment

Popular posts from this blog

Nightsoil men

In Victorian time, building were often put up before water and sewage pipes were laid down so a single tap or pump might have to serve hundreds of people. Toilet waste was carried away by 'nightsoil men'.  Some seeped into the water supply and rivers became polluted by factory and human waste. In 1858, the Thames in London became so smelly that the year was known as 'the year of the Great Stink'!
Post a Comment
Read more

The Indian Mutiny

British rulers were shaken to the core by the Indian Mutiny of 1857. The spark which lit the fuse of the rebellion was when cartridges were given to Indian troops which were coated in grease, made from cow or pig fat. These cartridges had to be prepared for firing by being bitten at one end. The cow is a sacred animal to the Hindus and the pig is regarded as unclean by Muslims, so no one was happy. Indian troops refused to bite the cartridges. Their British officers hanged a few. The troops rioted. They killed their officers, ransacked Delhi, and massacred British men, women and children. For a long time it looked as if the British might be defeated. The rebellion was about more than just biting cartridges. It was a revolt against taxation and the laws of the East India Company, which ruled India for Britain. After the mutiny, the British were a lot more careful about how they governed India. When the news of the mutiny reached England, crowds bayed for blood and Victoria was hor...
Post a Comment
Read more

Bidmas, Bedmas, Bodmas, Pedmas And Christmas

This BBC GCSE Bitesize post says, BODMAS stands for 'brackets', 'other', 'division', 'multiplication', 'addition' and 'subtraction'. It's the order in which we carry out a calculation. But another article says, the order of operations in Maths called BIDMAS. BIDMAS stands for Brackets, Indices, Division and Multiplication, Addition and Subtraction. The difference is that the second substitute 'o' with 'i', and we can understand that teacher normally chooses easy way to explain whose pupils can understand, exponent or power or indices are out of reach of foundation students, so teachers uses 'other' instead. And in this article , 'o' actually stands for 'order', as far as my memory can go, my English teacher never teach me 'order' actually means 'Powers and Square Roots, etc.' In United States, the mnemonic fo Order of Operation is PEMDAS, because brackets are called pa...
Post a Comment
Read more