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A study conducted by F5 Networks, found that companies are still very much rely on firewalls to protect against DoS-attacks despite the fact that this class of devices is often not doing its job.

The study, which was attended by 1000 medium and large organizations from 10 countries, found that 45% of respondents regularly fall victim to such attacks, which are a mixture of intrusions at the application level and network level.

About half rated as highly effective attack, 79% said they relied on firewalls, while 42% believe that these devices are ineffective in combating the traditional network-level attacks.

The study also showed that more than half of the respondents been identifying attempts to access the encrypted data network, while 44% noticed an attack on the DNS-servers, which are very hard to resist.

“While many organizations believe that internal threats to protect the most difficult, the study demonstrates that external threats are still a powerful force, and companies should be aware of the most effective ways to protect” – said technical director Gary Newell F5.

Attacks on the DNS-servers ranked first among those that reflect the most challenging, according to the third of the respondents.

“IT managers are caught between a rock and a hard place because the attacks are more complicated, and price increases all the leaks,” – said Newell.

Anxiety about DDoS is not new, but vendors are divided in opinion about how to protect yourself from them.

Some see the best solution to improve the routing infrastructure, routers, because it first has to deal with DDoS packets when they enter the network. F5 vengeance advertises its application delivery controllers Big-IP, which operate on the principle of firewalls, load balancers. Another way Рis to use multi-tier applications and related hardware.