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DDoS attack (Denial of Service or DoS)

How to fight against DDoS attacks?

Thanks to Nameshield’s DNS Pre­mi­um labelled France Cyber­se­cu­ri­ty, with its anti-DDoS fil­ter and its any­cast net­work allow­ing to ensure a per­fect avail­abil­i­ty of your Inter­net ser­vices and pre­vent any dis­rup­tion.

FIND OUT ABOUT OUR DNS PREMIUM SOLUTION

What’s a DDoS attack?

An attack by denial of ser­vice (DoS) is an IT attack that aims to make a ser­vice unavail­able, to hin­der the legit­i­mate users of a ser­vice from using it.

Attaque DDoS

It can be about:

  • The flood­ing of a net­work to pre­vent its oper­a­tion;
  • The dis­rup­tion of con­nec­tions between two machines, hin­der­ing the access to a par­tic­u­lar ser­vice;
  • The obstruc­tion of access to a ser­vice for a par­tic­u­lar per­son.

The denial of ser­vice attack can then block a file serv­er, make it impos­si­ble to access a web serv­er or hin­der the dis­tri­b­u­tion of email in a com­pa­ny.

The first attacks were per­pe­trat­ed by a sin­gle “attack­er” with lim­it­ed resources and attract­ed by achieve­ment and rep­u­ta­tion

DDoS attack

Today, with the strong rise of busi­ness trades on the Inter­net, the num­ber of denial of ser­vice black­mail attacks has strong­ly increased, more advanced attacks have appeared, imply­ing many “sol­diers”, also called “zom­bies”. This is called DDoS (dis­trib­uted denial of ser­vice attack).

These DDoS attacks are on the rise and par­tic­u­lar­ly tar­get large com­pa­nies, accom­pa­nied by a ran­som request to stop the attack.

Source: Nameshield’s White paper – Under­stand­ing domain names

For more infor­ma­tion on the attacks tar­get­ing the DNS, you can find on the blog an arti­cle about the 3 most com­mon DNS attacks and how to defeat them.

And also dis­cov­er the white paper on “Domain names secu­ri­ty” to down­load here. A best prac­tices guide to effec­tive­ly pro­tect your domain names from cyber threats includ­ing DDoS attacks.