Dosarrest
Machine Learning Model Selection. Got Machine Learning?
Machine learning has been an industry buzz word for the last few years. More and more frequently it’s being sought after by potential customers. Unfortunately, machine learning is rarely sought as a solution to a particular problem, rather it is simply treated as an item on a checklist. This is analogous to asking a contractor if they use a hammer. When the contractor uses the hammer and on what is far more important. A Tale of Terabits: Don’t Forget about Mirai. The attacks generated by the latest amplification attack methodology, eponymously named Memcache (a popular open source distributed memory caching system), have so far generated the largest DDoS attacks to date.
Within a one week period, Memcache has created two attacks registering at 1.3 Tbps and 1.7 Tbps, both eclipsing the previous high watermark set by the Mirai Botnet in 2016 that targeted and disrupted the DYN DNS infrastructure. To date, over 17,000 Memcache vulnerable servers have been identified, with each server potentially having an amplification factor of 50,000, and this list is growing. If there is any silver lining to this situation, it is that it is much easier to patch and mitigate these vulnerable Memcache servers than it is for the Mirai Botnet. A) Do not stay infected after a reboot (common occurrence with devices like DVR’s), and can be compromised on a repeated basis by a different botnet at a time. DOSarrest Internet Security.
Building a single sign-on feature (SSO) for stateless applications can be challenging.
Stateless applications are the new way of building web applications. Back in the day, web applications would hold a session for each logged in user; this led to many issues in the area of scalability, availability and security. As modern web applications get more sophisticated, the need for stateless and micro-services increases. A Stateless application is an application that does not save data generated in one session for use in the next session; each request to the web server is served independently from previous and subsequent requests. Sending the user identity alongside each request, using, for example, JSON web tokens (JWT), can help to eliminate the need for sessions.
The Rise and Reasons for SSL based attacks. When one thinks of SSL and Encryption, the de facto assumption is that it automatically makes IT systems safer, and for the most part, this assumption is mostly true: SSL/TLS encryption has been instrumental in providing users the confidence for online data transactions over the last 20 years.
However, cybercriminals have recently started using SSL/TLS as part of their attack strategies, resulting in an increase of SSL based attacks, ranging from: Phishing sites appearing to be valid using legitimate certificates Encrypted SYN floods which are more resource intensive on the server Encrypted Web Application Attacks that attempt to bypass security measures that can’t analyze the encrypted traffic.
DOSarrest Internet Security. How do you stop Scraping ?
There are a number of ways to go about this including buying a subscription of scraping bots that have been identified and then applying an Access Control List(ACL) to prevent them from accessing your web properties. DOSarrest develops its own software to thwart any malicious traffic, this particular anti-scraping feature can be applied to your website or a specific URI(s) to keep the scraping bots from continually scraping your website Named “Code Injection-Bot Blocker” in our DSS2(DOSarrest’s customer portal), this feature dynamically injects code that’s attractive to botnets but remains unseen by human website visitors, this injected code directs the bots to a honeypot, where as soon as they begin to make requests the traffic is analyzed and blocked.
Understanding Positive and Negative model Firewalls and WAFs. Web Application Firewalls are a vital component to a healthy security position.Traditional security appliances, like firewalls, are not designed to evaluate all of the intricacies of modern applications.
Traditional firewalls evaluate network layer information, comparing traffic against a list of criteria.For any public web application, the network firewall will be able to block certain attacks but any attacks that use valid web traffic are invisible to the network firewall.Application layer attacks like SQLi and XSS are able to pass through the network firewall unchallenged because they are indistinguishable from normal traffic at the network layer.
Although valid from a HTTP(s) perspective, this is not something you would want to get executed by your webserver. Web Application firewalls perform a similar function but unsurprisingly they evaluate application information.This means that they are able to block the application layer attacks that pass through the network firewall. Network Intelligence as a Service DOSarrest Traffic Analyzer. This month we launched a new exciting product called the DOSarrest Traffic Analyzer (DTA), taking an inhouse platform that has been essential in providing real time security analytics and actions for the DOSarrest network, and making it available for customers to help with their own networks.
In a nutshell, the DTA operates by ingesting Sflow/Netflow/Jflow records from any device capable of sending this type of data (routers and switches), indexing the data, and providing real time and historical data. A simple one-line config to export these flows is all that is required by anyone wanting to utilize this service. Cross Site Scripting attack illustrated. Wordpress plugin, Social Warfare exposes sites to XSS attacks, was the alert that went out on March 21st 2019.
A plugin named "Social Warfare" used by Wordpress sites allowed hackers to inject code into their websites, its estimated that 70,000 websites were effected. It was labelled as A "Zero-Day" Attack which has always confused me because at one time every exploit was a "Zero-Day" attack. Using Network Tools Like DOSarrest’s DTA To Mitigate DDoS Attacks. Last week we announced a new service offering called the DOSarrest Traffic Analyzer (DTA), essentially a cloud netflow/jflow/sflow ingestion and analyzer platform that leverages our Big Data platform we developed inhouse a few years ago and are now making available to you.
For this blog, I’ll detail some examples of reporting the DTA can provide you. I'll take a recent case of a mixed network downstream of DOSarrest, with a focus on hosting that received a decent sized and sustained DDoS. The customer is sending Jflow from three flow sources, with a sample rate 1:2000 (pretty standard for larger traffic networks). During the attack, we were able to see a number of unique vectors that provided detail for the customer’s netops team to take appropriate action. DOSarrest Internet Security. Once upon a time DOSarrest used the same status code (403 Forbidden) to respond to any illegitimate traffic.
For webservers this is sufficient, but sometimes people want to know why a request is forbidden. As we added more and more filters that 403 became less and less meaningful, so we started to differentiate Forbidden traffic into different classes using the 461-469 range of status codes. 468, in particular, is assigned to filters that block based on IP reputation. There are a few optional filters available that use this: Block Bot, Block TOR, Block Region, and the newest Block Proxy.
DOSarrest Internet Security. Data breaches happen. They happen across all industries, including Security Services as witnessed recently by Imperva’s Incapsula, and they show no signs of stopping. Your data, and I stress this is your data, can be classified as Public, Private, and Confidential. How Good Network Intelligence Can Help Stop Malicious Traffic. Since launching our cloud-based flow traffic analyzer, we’ve seen a lot of interesting takes and strategies on how to employ the DOSarrest Traffic Analyzer(DTA) from our customers.
Whether Netops/Secops is focusing on an enterprise network or a multi-tenant hosting provider, DTA has been used to identify and monitor these security threats to their respective network operations: 1) DDoS Attacks – a cyberattack strategy, we here at DOSarrest are all too familiar with, Netops teams for the various enterprises and hosting companies are increasingly finding themselves reacting to an attack, where time is of the essence to identify and mitigate before it causes primary and collateral damage. The attacker realizes they don’t need anything too sophisticated to cause damage and flood the servers and network infrastructure with volumetric and/or protocol style attacks. With DTA you can quickly identify when these rogue systems come to life and properly decommission before they do untold damage.
SHOULD I USE A HYBRID DDoS DEFENSE STRATEGY ? For a few years now, we here at DOSarrest started to field enquiries into hybrid DDoS defense setups, where customers wanted to leverage their existing on-premise DDoS mitigation infrastructure to work in co-ordination with the cloud scrubbing capabilities that our network infrastructure protection service, which we call “Data Center Defender” aka DCD is able to provide. The basic premise of these setups is as such: When the DDoS attack volume grows beyond the capacity of the customer’s network upstream links or the capacity of the on-premise device, the on-prem device diverts traffic to the cloud provider, who has a much larger DDoS surface area to ingest and scrub the traffic.. How To Stop Malicious Traffic In An Asymmetrical Traffic Flow Environment. Network Monitoring & Traffic Analysis Tools: How To Choose The Right One. When we first started providing DOSarrest Traffic Analyzer (DTA) product, we initially just wanted to take advantage of the capabilities of the DCD platform and provide a basic traffic analysis tool for customer NetOps teams and their respective networks.
As we continued to develop the DTA, we looked around at some of the leaders in the Network Traffic Analysis industry to see what they were doing. There were a couple of well known names (eg. Kentik, Cisco Stealthwatch, Nagios Network Analyzer, Darktrace), and some not so well known names (Plixer Scrutinzer, Awake Security Platform, Lastline Defender). While each of these tools have various strengths, our analysis revealed that there seemed to be challenges and hurdles in successfully introducing them into a customer’s network operation, notably: We looked at these industry challenges and evolved the DTA to avoid these pitfalls while still offering a powerful and flexible tool for Network operations and engineering.
CLDAP Reflection Attacks back in style for the spring 2020 collection. Reflection attacks are nothing new, having been around since the early 2000’s. But there was some recent activity where we saw disparate customers, with disparate services all attacked within a few days of each other with the same attack vectors, with varying differences in the size and duration of the attack. Customers ranged from: Gaming datacenter in Taiwan A BPO in Manila An ISP from Ontario A cloud hosting provider in London UK All these customers suffered an amplification attack using UDP source port 53 and 389, as well as UDP source port 0 (the fragmented tailing packets of a large response). How the RangeAmp attack works. Home. Пустая страница. Home. DDoS Protection by DOSarrest. Bei XING anmelden. How to choose Effective DDoS Protection Plan?
How to choose Effective DDoS Protection Plan?: dosarrest18 — LiveJournal. How to choose Effective DDoS Protection Plan? DOSarrest DDoS Protection. Quotes - Dosarrest (Pune, 16, India) Showing 1-1 of 1. DOSarrest — DOSarrest DDoS Protection. DDoS Protection by DOSarrest on DeviantArt. Posts by Dos arrest. DDoS Protection.