Interested in Ubuntu? Check Out Andrew Mallet’s New Course
Tune into our newest addition to our course library: Ubuntu Server (18.04): Installing and Managing openLDAP Directories, with Andrew Mallet to learn the basics of Ubuntu server.
About the Course:
OpenLDAP is a directory service that predates many proprietary systems and provides a universal authentication mechanism for client system to authenticate to and white pages system to search. In this course we will take you through the basics of openLDAP Leading to an install. From there you will learn how to develop your system further by adding and searching entries. Next we will move on to authentication to openLDAP from other Linux clients and services such as Apache HTTPD. Finally we will look at scaling out our system by including replication to add failover and fault-tolerance to the Directly.
SD-WAN Provider Martello Goes Public on TSX Venture Exchange
Now that it is publicly traded the company intends to continue focusing on acquisitions like its recent purchase of SD-WAN provider Elfiq Networks.
Research: Tail Attacks on Web Applications
When you think of a Distributed Denial of Service (DDoS) attack, you probably think about an attack which overflows the bandwidth available on a single link; or overflowing the number of half open TCP sessions a device can have open at once, preventing the device from accepting more sessions. In all cases, a DoS or DDoS attack will involve a lot of traffic being pushed at a single device, or across a single link.
TL;DR
- Denial of service attacks do not always require high volumes of traffic
- An intelligent attacker can exploit the long tail of service queues deep in a web application to bring the service down
- These kinds of attacks would be very difficult to detect
But if you look at an entire system, there are a lot of places where resources are scarce, and hence are places where resources could be consumed in a way that prevents services from operating correctly. Such attacks would not need to be distributed, because they could take much less traffic than is traditionally required to deny a service. These kinds of attacks are called tail attacks, because they attack the long tail of resource pools, where these pools are much Continue reading
Sysdig Scores $68.5M Series D to Boost Container Monitoring, Security
Sysdig CEO Suresh Vasudevan declined to comment on the company’s plans for an initial public offering.
Cisco Helped Bring the Brains to T-Mobile’s Network
T-Mobile is using Cisco’s virtualized packet core throughout its network today and will use it as it upgrades to a 5G packet core.
Norfolk and Richmond, Virginia: Cloudflare’s 152nd and 153rd cities
Virginia has a very important place in Internet history, as well as the history of Cloudflare’s network.
Northern Virginia, in the area around Ashburn VA, has for a long time been core to Internet infrastructure. In the early 1990’s, MAE-East (Metropolitan-Area-Exchange East) , an Internet Exchange Point (IXP) was established. MAE-East and West were some of the earliest IXPs. Internet Exchange Points are crucial interconnection points for ISPs and other Internet Networks to interconnect and exchange traffic. Eco-systems have grown around these through new data center offerings and new Internet platforms. Like many pieces of the Internet, MAE-East had a humble beginning, though not many humble beginnings grew to handle around 50% of Internet traffic exchange.
Cloudflare’s second Data Center, and one that still plays a critical component in our Global Network was Ashburn, Virginia. Similarly across many organizations, the Northern Virginia area has become a Data Center mecca. Many of the largest Clouds have a substantial amount of their footprint in Northern Virginia. Although MAE-East no longer exists, other Internet Exchange Points have come and grown in its place.
Cloudflare’s network has grown beyond what was traditional Interconnection points, like Ashburn/Northern VA, to a new Edge of the Continue reading
Equinix Picks New CEO Charles Meyers
Meyers succeeds Peter Van Camp, who was named interim CEO in January when former CEO Steven Smith resigned suddenly after “exercising poor judgment with respect to an employee matter.”