Skip to main content

DDoS Attacks - What Can You Do About Them?

A DDoS or Distributed Denial of Service Attack is an illegitimate effort of a person or group to make your computer network or websites unavailable to its user group. In case of a DDoS attack your computer network or website may stop functioning temporarily or permanently. DDoS attacks are biggest threat to network security.
This article is about how to prevent a computer network or website from DDoS attacks.


Identify a DDoS


If you are experiencing any one the following symptoms, this may be a DDoS attack.

1. You are getting millions of zillions of spam email in your email address attached with the network or website.
2. Network performance is pathetic, opening files and loading a website suddenly turned a nightmare.
3. A particular website is not available for very long time, given your hosting server is not under maintenance.
If you experience any one of these symptoms, this is a probable DDoS attack. Don’t panic you can prevent against these.

Preventing Against DDoS attacks


Use Firewalls like Open BSDs pf(4) packet filter; these acts like a connection proxy. For other BSDs its called synproxy. Ordinary firewalls won’t be able to protect in case of attack on port 80 web service.

Use Clean Pipes to prevent against DDoS Attacks. You can buy these from providers like Tata Communications and Verisign etc. When you use Clean Pipes, all traffic request passes through a cleaning center where bad traffic and good traffic differentiated. Central internet connectivity is a must to use these services.

Use Intrusion Prevention System (IPS) to Stop DDoS Attacks. These systems are effective when DDoS attacks bears signature. However, an IPS not works with behavior based DoS attacks where legitimate is used with bad intentions. A rate based IPS i.e. RBIPS perfect choice to let in legitimate traffic and throw out illegitimate request.

Use DoS Defense i.e. DDS from DDoS Protection. A DDS can handle both rate based attacks and protocol attacks. Also a DDS is able to prevent against connection based DDoS attacks and those associated with legitimate content but with bad intentions.

Use Sinkholding against Blackholding DDoS attacks. In case of DNS or IP address DDoS attack al request are sent to a not actually existing web server or black hole. This can be successfully managed by ISP using Sinkholding which is capable in rejecting bad requests.

Use Application Front End Hardware to stop DDoS attacks. These can be used with switches and routers. When a request approaches to server, the application front end hardware distinguishes between good traffic and bad traffic and mark them as priority, regular and dangerous.
Post a Comment

Popular posts from this blog

Why revise your website copy in New Year

The new year looks ideal time to start anything new especially renovations. You don't remember date for next renovation. Modifications are important in everything. Your website is not any different. Knowledge changes with time. A website copy written a year back may be old now. Customers want to see and grow with you. They continuously want new things. You need to add new knowledge more often.
Website copy is something that you can not revise daily or weekly. But before your content turn out too old you need to revise it.
Your website is same like a computer. If your machine runs longer you need to restart it and perhaps give a cold boot. Same is with website. Your audience will love to see your website in new shape.
Definitely they are used to old patterns but if you can add more value audience will appreciate it.

Cost of Smartphone Notifications

Data is cheap now, in fact raw cheap if I compare it from ten years down the line. For the price of a meal or less you get Internet data for almost full month. ISPs has there own ways of making holes in every pocket. No one is spared. Data has become basic need of the times and ISPs making good profits. But question is how much data? Are we not overusing it. Shall there become a time when data will be in danger of becoming extinct and we will need to make campaigns same ways as we do it today for air, water or electricity? Time will give the answer.

Stories are served day and night and we are using data mindlessly without thinking how much we are paying for it. Android Smartphones has added opium to data consumption and Push Notifications given that extra mileage. Many smartphone users subscribe to notifications unknowingly. Once smartphone is hand you get many things which you want or don’t want. There is an impression that I am paying for data only, that too very small sum, smartp…

5 ways to get quality traffic on your website

Everyone wants quality,  so does you.  There is nothing wrong in seeking something good,  better or extraordinary.  What you sow is what you reap.  Quality traffic comes for quality content. What you publish shall answer a question  solve a problem or clear a doubt. 
Nobody want to read you because you can write it and you are dying to make money from advertising.
People read your content if it's worth and makes life easier. 
Any content that solve a problem makes the way to bookmarks.  It get recommendations without asking for it. 
Quality content is consumable. Here are 5 qualities of quality content
1. Its easy to understand
2. It enhance know how
3. It answers a question.
4. It has accurate facts and figures.
5. It has references to win trust.
If you have all this in your content, quality traffic will come. Quality traffic is when people look in your website,  appreciate its content and press for call to action.  There is no question of quality traffic without action…