What to do if Linux dedicated server under DDOS attack?

Today, the Internet is very likely that your Linux dedicated server will be under DDoS-attack. Perhaps the theme of your project is such that you will never come across such an attack. But there are also opposite cases when sites with a certain subject are subject to regular attacks. First you need to understand the reason for the attack on the site.

• Competition. It happens that Internet projects order an attack on the site of their competitors. Of course, this is a very unscrupulous way, but there is nowhere to go. Depending on the volume, such an attack may cost a decent amount of money to its customer, so if you survive it successfully, you can even get out of this situation as a winner.

• Blackmail. Attackers may require money from the owners of large sites to stop the DDoS attack. With such people can not conduct any negotiations. If you are ready, you can fight off small attacks. Large attacks cannot last too long due to their cost, so the organizer of such an attack is unlikely to make it for the money.

• Ideology. Among hackers there are also ideological and principled people. If they fundamentally disagree with the policy of your project, attacks on it can continue for a very long time, depending on the perseverance of the attackers.

The first type is the lungs, the so-called flood. If you are prepared enough, it is easy to repel such an attack. For owners of a dedicated server will not be difficult to independently analyze the logs of the web server. If you are new, your hosting can provide you with administrative services. In such a situation, hosting will independently warn you about the attack and try to solve it.

The second type is a high level attack. Such a DDoS attack is reflected only with the help of special training and with the use of external means of protection. It is important to understand that the attack is carried out on the server, so all sites located on it suffer at once. Therefore, in the case of using virtual hosting, such an attack can harm tens, if not hundreds of projects. The provider even if you have dedicated server UK unlimited bandwidth in such a situation usually blocks the site.

Solutions

There is no such simple defense against high level attacks. In this case, you need to decide what is more expensive: you need to defend against an attack or a hacker to conduct this attack. Recall that such an attack costs a lot of money, so if it’s not critical for your site to stop working for 1-2 days, then it’s better to do so.