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DataTel Times May 2015
Posted by:DataTel Communications, April - 23 - 2015

Download DataTel Times May 2015 Jackie Hager at Riverside Hotel

Attack of the Killer DoS

DataTel DoS AttacksA Denial-of-Service (DoS) or Distributed Denial-ofService (DDoS) attack is an attempt to make a machine or network resource unavailable to its intended users. In 2014, the frequency of recognized DDoS attacks had reached an average rate of 28 per hour.

DoS attacks typically target sites or services hosted on high-profile web servers such as banks and credit card payment gateways; and are also commonly carried out by server owners or disgruntled competitors on game servers such as Minecraft.

One common method of attack involves saturating the target machine with external communications requests, so much so that it cannot respond to legitimate traffic, or responds so slowly as to be rendered essentially unavailable. A DoS attack may include execution of malware intended to max out the processor’s usage, preventing any work from occurring. In most cases DoS attacks involve forging of IP sender addresses (IP address spoofing) so that the location of the attacking machines cannot easily be identified and to prevent filtering of the packets based on the source address.

DataTel Smurf AttacksSmurf Attack relies on misconfigured network devices that allow packets to be sent to all computer hosts on a particular network via the broadcast address of the network, rather than a specific machine. The network then serves as a smurf amplifier. In such an attack, the perpetrators will send large numbers of IP packets with the source address faked to appear to be the address of the victim. The network’s bandwidth is quickly used up, preventing legitimate packets from getting through to their destination.


Ping Flood is based on sending the victim an overwhelming number of ping packets, usually using the “ping” command from Unix-like hosts. Ping of death is based on sending the victim a malformed ping packet, which might lead to a system crash.


Peer-to-Peer Attacks With peer-to-peer there is no botnet and the attacker doesn’t have to communicate with the clients it subverts. Instead, the attacker acts as a “puppet master,” instructing clients of large peer-topeer file sharing hubs to disconnect from their peer-to-peer network and to connect to the victim’s website instead. As a result, several thousand computers may aggressively try to connect to a target website. Most web servers fail almost instantly under five or six thousand connections per second.


How can you protect your company?


Defensive responses to denial-of-service attacks typically involve a combination of attack detection, traffic classification and response tools. Datatel offers a complete range of protection and mitigation solutions.

Firewalls, Switches and Routers can prevent users from launching simple flooding type attacks and can have some rate-limiting and ACL capability. Most routers can be easily overwhelmed under a DoS attack.

Application Front End Hardware analyzes data packets as they enter the system. IPS Intrusionprevention systems are effective if the attacks have signatures associated with them. DDS DoS Defense System can block connection-based DoS attacks and those with legitimate content but bad intent. Let Datatel work for you to design and build your line of defense against DDOS attacks.

DataTel Cusomter Highlight - Riverside hotelCustomer Spotlight: Riverside Hotel

The Riverside Hotel is a locally owned resort-style hotel, and one of the largest hotels in the state. The hotel has been remodeling most of the property, including the outdoor pool and “splash pad”, as well as large-scale outdoor chess and Petanque courts (Genius question: who knows what Petanque is?*). With all the nice weather we’ve been having, and the fact that they have carmelized bacon in their breakfast buffet, Riverside sounds like the perfect place for your next “stay-cation.”

Riverside’s phone system was also in need of a remodel: it was so old, it was impossible to find anyone in the valley who could offer service or support. Jackie Hager, the Controller at Riverside, was responsible for trying to keep the old system alive, and was relieved to have a new system installed by DataTel. “We knew we wanted a Mitel system and the word on the street was that DataTel had good customer service and a good response time.”

The Riverside job was a large install and could have been stressful, but Jackie said DataTel’s onsite technicians were very helpful and made the transition seamless. All the technicians were easy to work with, and also worked well with the other vendors that were involved. Jackie also appreciated how DataTel explained the system and answered all her questions, particularly because she didn’t have prior experience with a Mitel system. Overall, the transition was done quickly, with no interruption in service. The system was installed in February, and since then, they have only had a few minor hiccups. Jackie said that DataTel has been very helpful in solving any problems, whether they are part of the system itself or an outside problem.

DataTel is happy to be a part of Riverside’s upgrade. And if you are craving carmelized bacon, you can find a room at

*Petanque is simple tossing game, similar to horseshoes, but more European. The goal is to throw hollow metal balls as close as possible to a small wooden ball target.




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