Top 5 Likely Attacks on Your Network and How to Prevent Them from Happening?

What lies in the heart of your business? – Data and infrastructure

With the help of data and infrastructure your employees, partners, and customers find it easy to connect. It relies on the network to support the business processes. But, with increasing attack on the DNS security protocols (most of the time which is too weak to ward off any attack practically) the data and reputation are at stake. When a DNS server goes down it is basically breaking down a part of the internet infrastructure, and you will find that the devices connected to the network also stops working. Did you know a single attack on the DNS security can bring all your operations to halt?

One needs a high accelerated performance to detect DNS attacks in a precise manner. So sooner you apply effective DNS security layer with the help of BlueCat in your defense, the less threat to your organization and business data. The first step is to understand how DNS-based attacks can affect your network and business. Lets us take a close look on some of the DNS based threats.

1. DoS Attack

DoS combine reflection as well as amplification and uses open resolvers from third-party for the Internet, which is a threat to the data. The attackers send spam queries to the open reclusive servers and these queries are designd such that they will create huge responses. Thus, this causes the attacked server to deny service to authenticate users – also known as DDos attack.

2. Cache Poisoning

The attacker makes queries for a recursive name server for proper IP address from the affected site. The recursive server does not have any particular IP address and the queries turn malicious. This infected resolver provides a wrong IP address to the extra legitimate sites. This recursive name server caches wrong IP address. This, in turn, uses queries for the recursive server, which replies with cached wrong IP address. Cache poisoning allows attacker to collect logins, password, and credit card information.

3. TCP SYN Floods

It uses the three-way handshake, which starts a TCP connection. In the meantime, the attackers send spam SYN packets comes with the source IP address of wrong determinations. The server launches these SYN-ACKs and never acknowledges back from the wrong destinations and connections never completes. These are some of the connections, which are half-open, and wears out the server memory. This causes the server to stop responding and requests for new connection come from valid users.

4. Cause of DNS Tunneling

The threat to network security comes when it uses DNS as a secret to bypass the firewall. These make the attacker’s tunnels and some protocols such as TCP, SSH or DNS in Web to pass the stolen data without detection. You will find a DNS tunnel that is very easy to use just like a remote control and compromise the internal host. You will find that data ex-filtration can happen due to DNS tunnel.

5.  DNS Hijack

Various settings of DNS record come to a point and modify the wrong DNS server or domain. It uses to contact a valid website to redirect the wrong site. You will find that hackers control the fake site so that it looks like a real thing. To affect the DNS servers the hackers steal usernames, password as well as the information of your credit cards.

Here are some of the common and viable attacks on the network security against which you have to build protection wall. To combat this you need to find a suitable way and get ahead of DNS security.