An exploited server is one that is no longer fully under your control. Someone else is using it for their own purposes. Common exploits are:. If a webapp was exploited then typically we can disable the webapp. Then you may wish to upgrade to the latest version of that webapp or use a different app. The first thing most webapp exploits do is to install a backdoor.
Changing The Port
One of the most common ways for malicious software malware to penetrate the defenses of various web services is via brute-force attacks. Through repeated login attempts, malware can overwhelm the authentication service and bypass existing password protections. Fortunately, most modern web servers offer some form of brute-force protection.
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Fast forward about to about three years ago, when I started to get into dedicated servers quite heavily. This is when I began to host gaming servers for friends, and boy, let me tell you, it was a learning experience. Before I continue, let me say that I am by no means an expert on this subject, but I like to think I have more knowledge than the Average Joe when it comes to dedicated servers. So please, take this article with a grain of salt, and by all means, give me some feedback on what you would do, and why. Anyhow, back on topic! ModSecurity: ModSec for short! I heard about Fail2Ban a while back when I was playing a game with some friends.