No Humans Involved: Mitigating a 754 Million PPS DDoS Attack Automatically

No Humans Involved: Mitigating a 754 Million PPS DDoS Attack Automatically
No Humans Involved: Mitigating a 754 Million PPS DDoS Attack Automatically

On June 21, Cloudflare automatically mitigated a highly volumetric DDoS attack that peaked at 754 million packets per second. The attack was part of an organized four day campaign starting on June 18 and ending on June 21: attack traffic was sent from over 316,000 IP addresses towards a single Cloudflare IP address that was mostly used for websites on our Free plan. No downtime or service degradation was reported during the attack, and no charges accrued to customers due to our unmetered mitigation guarantee.

The attack was detected and handled automatically by Gatebot, our global DDoS detection and mitigation system without any manual intervention by our teams. Notably, because our automated systems were able to mitigate the attack without issue, no alerts or pages were sent to our on-call teams and no humans were involved at all.

No Humans Involved: Mitigating a 754 Million PPS DDoS Attack Automatically
Attack Snapshot - Peaking at 754 Mpps. The two different colors in the graph represent two separate systems dropping packets. 

During those four days, the attack utilized a combination of three attack vectors over the TCP protocol: SYN floods, ACK floods and SYN-ACK floods. The attack campaign sustained for multiple hours at rates exceeding 400-600 million packets per second Continue reading

Contour Ingress Controller Joins CNCF at Incubation Level

The open source Envoy proxy, joined the Cloud Native Computing Foundation (CNCF) as an incubation level project, skipping over the traditional sandbox level entry point. The project, originally developed in 2017 at Heptio before the company’s acquisition by VMware, displayed a level of usage in the field, support in the community and activity in its ecosystem that warranted skipping the sandbox, said

Fannie Mae’s journey to SD-WAN means less reliance on MPLS and VPNs

About a year and a half ago, some Texas employees of the Federal National Mortgage Association (Fannie Mae) were leaving work early to work at home over the enterprise VNP because it gave them better application performance and less congestion than the office network.That’s also when the agency started moving toward a cloud-first environment and away from its legacy hub-and-spoke WAN.More about SD-WAN: How to buy SD-WAN technology: Key questions to consider when selecting a supplier • How to pick an off-site data-backup method •  SD-Branch: What it is and why you’ll need it • What are the options for security SD-WAN?To read this article in full, please click here

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Cool Products and Services

  • Developers care about shipping secure applications. Application security products and processes, however, have not kept up with advances in software development. There are a new breed of tools hitting the market that enable developers to take the lead on AppSec. Learn how engineering teams are using products like StackHawk and Snyk to add security bug testing to their CI pipelines.

  • Learn the stuff they don't teach you in the AWS docs. Filter out the distracting hype, and focus on the parts of AWS that you'd be foolish not to use. Learn the Good Parts of AWS. Created by former senior-level AWS engineers of 15 years.

  • Stateful JavaScript Apps. Effortlessly add state to your Javascript apps with FaunaDB. Generous free tier. Try Continue reading

Getting Started with IBM QRadar and Red Hat Ansible Automation Platform

IBM Security QRadar is a Security Information and Event Management (SIEM), which can help security teams to accurately detect and prioritize threats across the organization, providing intelligent insights that enable organisations to respond quickly to reduce the impact of incidents. By consolidating log events and network flow data from thousands of devices, endpoints, users and applications distributed throughout your network, QRadar correlates all this different information and aggregates related events into single alerts to accelerate incident analysis and remediation. 

 

Ansible and QRadar, better together

Ansible is the open and powerful language security teams can use to interoperate across the various security technologies involved in their day-to-day activities.

Customers can take advantage of the IBM QRadar Content Collection to create sophisticated security workflows through the automation of the following functionalities:

  • Log sources configuration
  • Offense rules enablement
  • Offense management

Ansible allows security organizations to integrate QRadar into automated security processes, enabling them to automate QRadar configuration deployments in recurring situations like automated test environments, but also in large scale deployments where similar tasks have to be rolled out and managed across multiple nodes.

Security practitioners can automate investigation activities enabling QRadar to programmatically access newdata sources. Also, they now have Continue reading

Working Around Docker Desktop’s Outdated Kubernetes Version

As of the time that I published this blog post in early July 2020, Docker Desktop for macOS was at version 2.2.0.4 (for the “stable” channel). That version includes a relatively recent version of the Docker engine (19.03.8, compared to 19.03.12 on my Fedora 31 box), but a quite outdated version of Kubernetes (1.15.5, which isn’t supported by upstream). Now, this may not be a problem for users who only use Kubernetes via Docker Desktop. For me, however, the old version of Kubernetes—specifically the old version of kubectl—causes problems. Here’s how I worked around the old version that Docker Desktop supplies.

First, you’ll note that Docker Desktop automatically symlinks its version of kubectl into your system path at /usr/local/bin. You can verify the version of Docker Desktop’s kubectl by running this command:

/usr/local/bin/kubectl version --client=true

On my macOS 10.14.6-based system, this returned a version of 1.15.5. According to GitHub, v1.15.5 was released in October of 2019. Per the Kubernetes version skew policy, this version of kubectl would work with with 1.14, 1.15, and 1.16. What if I need to Continue reading

The Hedge Pdocast Episode 43: Ivan Pepelnjak and Trusting Routing Protocols

Can you really trust what a routing protocol tells you about how to reach a given destination? Ivan Pepelnjak joins Nick Russo and Russ White to provide a longer version of the tempting one-word answer: no! Join us as we discuss a wide range of issues including third-party next-hops, BGP communities, and the RPKI.

download

Multi-arch build, what about Travis?

Following the previous article where we saw how to build multi arch images using GitHub Actions, we will now show how to do the same thing using another CI. In this article, we’ll consider Travis, which is one of the most tricky ones to use for this use case.

To start building your image with Travis, you will first need to create .travis.yml file at the root of your repository.

language: bash
dist: bionic
services:
  - docker
script:
  - docker version

You may notice that we specified using “bionic” to have the latest version of Ubuntu available – Ubuntu 18.04 (Bionic Beaver). As of today (May 2020), if you run this script, you’ll be able to see that the Docker Engine version it provides is 18.06.0-ce which is too old to be able to use buildx. So we’ll have to install Docker manually.

language: bash
dist: bionic
before_install:
  - sudo rm -rf /var/lib/apt/lists/*
  - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
  - sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) edge"
  - sudo apt-get update
  - sudo apt-get -y -o Dpkg::Options::="--force-confnew" install docker-ce
script:
Continue reading

Day Two Cloud 056: (Not) Streaming Telemetry

Streaming telemetry is all the rage, but today's show dives into an architecture that forgoes streaming telemetry in favor of other options. We talk about why our guests went in a different direction, the problems they're trying to solve, and how it's working out. Our guests are Kevin Landreth, Director, Service Reliability; and Carl Montanari, Network Reliability Engineer, both at Packet Fabric.

Day Two Cloud 056: (Not) Streaming Telemetry

Streaming telemetry is all the rage, but today's show dives into an architecture that forgoes streaming telemetry in favor of other options. We talk about why our guests went in a different direction, the problems they're trying to solve, and how it's working out. Our guests are Kevin Landreth, Director, Service Reliability; and Carl Montanari, Network Reliability Engineer, both at Packet Fabric.

The post Day Two Cloud 056: (Not) Streaming Telemetry appeared first on Packet Pushers.

NTC – A Chat With Jason Edelman

In today’s episode we sit down with Network to Code’s founder, Jason Edelman, to discuss his personal networking journey, how Network to Code came to be, and how he views the networking industry through the lens of network automation and orchestration.

Jason Edelman
Guest
Jordan Martin
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post NTC – A Chat With Jason Edelman appeared first on Network Collective.

Member News: Chapters Focus on Encryption

Lock it down: Several Internet Society chapters across the globe have written about the importance of encryption in recent weeks. The Namibia Chapter wrote about the way encryption can improve privacy and fight against the big business of criminal hacking. “Cybercrime is a global business, often run by multinational outfits,” the Chapter wrote. The Hong Kong Chapter, meanwhile, wrote that “encryption matters to all of us.” Internet users need to work together to protect encryption, the Chapter added. “No party can stand alone to persuade governments to stop creating laws or policies that harm encryption and digital security.”

Freedom for all: The Hong Kong Chapter also called for Internet freedoms to continue in the region as the Chinese government pushes for new security laws there. “We are convinced that the freedoms of speech, press and publication guaranteed by the Basic Law are also applicable to the media industry on the Internet,” the chapter wrote. “Internet users have the freedom and right to obtain, share information and express their expressions, and are protected from being censored, blocked or criminalized.”

Expanding the community: The Nepal Chapter recently wrote about community networks in the country, by highlighting the Rural Continue reading

Sandboxing in Linux with zero lines of code

Sandboxing in Linux with zero lines of code

Modern Linux operating systems provide many tools to run code more securely. There are namespaces (the basic building blocks for containers), Linux Security Modules, Integrity Measurement Architecture etc.

In this post we will review Linux seccomp and learn how to sandbox any (even a proprietary) application without writing a single line of code.

Sandboxing in Linux with zero lines of code

Tux by Iwan Gabovitch, GPL
Sandbox, Simplified Pixabay License

Linux system calls

System calls (syscalls) is a well-defined interface between userspace applications and the operating system (OS) kernel. On modern operating systems most applications provide only application-specific logic as code. Applications do not, and most of the time cannot, directly access low-level hardware or networking, when they need to store data or send something over the wire. Instead they use system calls to ask the OS kernel to do specific hardware and networking tasks on their behalf:

Sandboxing in Linux with zero lines of code

Apart from providing a generic high level way for applications to interact with the low level hardware, the system call architecture allows the OS kernel to manage available resources between applications as well as enforce policies, like application permissions, networking access control lists etc.

Linux seccomp

Linux seccomp is yet another syscall on Linux, but it is a bit Continue reading

What’s happening with The Morning Paper?

I hope things have been going well for you during the various stages of covid-19 lockdowns. In the UK where I am things are just starting to ease, although it looks like I’ll still be working remotely for a considerable time to come.

Lockdown so far has been bittersweet for me. Two deaths in my extended family, neither covid related, but both with funerals impacted, and one life-threatening incident in my immediate family (all ok now thank goodness, but it was very stressful at the time!). At the same time it’s been a wonderful opportunity to spend more quality time with my family and I’m grateful for that.

Covid-19, the lack of in-person schooling for children, and fully remote working have interrupted my routines just like they have for many others. I’ve still been studying pretty hard (it’s almost a form of relaxation and retreat for me), but in a different subject area. My current intention is to pick up The Morning Paper again for the new academic term, starting in September. I’ll no doubt have a huge backlog of interesting papers to look at by then – if you’ve encountered any on your travels that you think I Continue reading

CVE-2020-5902: Helping to protect against the F5 TMUI RCE vulnerability

CVE-2020-5902: Helping to protect against the F5 TMUI RCE vulnerability

Cloudflare has deployed a new managed rule protecting customers against a remote code execution vulnerability that has been found in F5 BIG-IP’s web-based Traffic Management User Interface (TMUI). Any customer who has access to the Cloudflare Web Application Firewall (WAF) is automatically protected by the new rule (100315) that has a default action of BLOCK.

Initial testing on our network has shown that attackers started probing and trying to exploit this vulnerability starting on July 3.

F5 has published detailed instructions on how to patch affected devices, how to detect if attempts have been made to exploit the vulnerability on a device and instructions on how to add a custom mitigation. If you have an F5 device, read their detailed mitigations before reading the rest of this blog post.

The most popular probe URL appears to be /tmui/login.jsp/..;/tmui/locallb/workspace/fileRead.jsp followed by /tmui/login.jsp/..;/tmui/util/getTabSet.jsp, /tmui/login.jsp/..;/tmui/system/user/authproperties.jsp and /tmui/login.jsp/..;/tmui/locallb/workspace/tmshCmd.jsp. All contain the critical pattern ..; which is at the heart of the vulnerability.

On July 3 we saw O(1k) probes ramping to O(1m) yesterday. This is because simple test patterns have been added to scanning tools and small test programs made available by Continue reading

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