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

BGP EVPN Underlay Network with OSPF

Introduction


The foundation of a modern Datacenter fabric is an Underlay Network and it is crucial to understand the operation of the Control-Plane protocol solution used in it. The focus of this chapter is OSPF. The first section starts by introducing the network topology and AS numbering scheme used throughout this book. The second section explains how OSPF speakers connected to the same segment become fully adjacent. The third section discusses the process of how OSPF speakers exchange Link State information and build a Link-State Database (LSDB) which is used as an information source for calculating Shortest Path Tree (SPT) towards each destination using Dijkstra algorithm. The focus of the fourth section is an OSPF LSA flooding process. It strat by explaining how local OSPF speaker sends Link State Advertisements wrapped inside a Link-State Update message to its adjacent router and how receiving OSPF speakers a) installs information into LSDB, b) Acknowledge the packet, and c) floods it out of OSPF interfaces. The fifth section discusses of LSA and SPF timers. At the end of this chapter, there are OSPF related configurations from every device.

Infrastructure AS Numbering and IP Addressing Scheme


Figure 1-1 illustrates an AS numbering and an IP address scheme used throughout this book. All Leaf switches have dedicated BGP Private AS number while spine switches in the same cluster share the same AS number. Inter-Switch links use Unnumbered IP addressing using (interface Loopback 0) which is also used as OSPF Router-Id. Loopback 0 is not advertised by any device. OSPF type for Inter-Switch link is point-to-point so there is no DR/BDR election process. Leaf switches also have interface Loopback 30 that is used as a VTEP (VXLAN Tunnel End Point) address. Loopback 30 IP addresses are advertised by Leaf switches. All Loopback interfaces are in OSPF passive interface mode. At this stage, all switches belong to OSPF Area 0.0.0.0.


Figure 1-1: AS Numbering and IP Addressing Scheme.
Continue reading

Latest U.S. ‘Anti-Encryption’ Bill Threatens Security of Millions

The Lawful Access to Encrypted Data Act recently introduced to U.S. Congress may be the worse in a recent string of attacks on encryption, our strongest digital security tool online.

While the recently-amended EARN IT Act would leave strong encryption on unstable ground if passed into law, the Lawful Access to Encrypted Data Act (LAEDA) is a direct assault on the tool millions of people rely on for personal and national security each day.

LAEDA would facilitate the death of end-to-end encryption by forcing companies to provide “technical assistance” to access encrypted data upon request by law enforcement investigations.

The problem is the only way for companies to comply would be to build backdoors into their products and services, or not use encryption at all, making everyone more vulnerable to the same crime we are all trying to prevent. To be clear – we’re talking about the same encryption used to keep activities like online banking, working from home, telehealth, and talking with friends secure online.

The Internet Society raised its concerns in an open letter to the co-sponsors of LAEDA in the Senate, which was signed by over 75 global cybersecurity experts, civil society organizations, companies, and Continue reading

Building Cloudflare TV from scratch

Building Cloudflare TV from scratch
Building Cloudflare TV from scratch

Cloudflare TV is inspired by television shows of the 90s that shared the newest, most exciting developments in computing and music videos. We had three basic requirements for Cloudflare TV:

  1. Guest participation should be as simple as joining a Zoom call
  2. There should be 24x7 programming. Something interesting should be playing all the time
  3. Everything should happen in the cloud and we should never have to ask anyone “to leave their computer on” to have the stream running 24 hours a day
Building Cloudflare TV from scratch

We didn’t set out to build Cloudflare TV from scratch

Building a lot of the technology behind Cloudflare TV from scratch was not part of the plan, especially given our aggressive timeline. So why did we decide to pursue it? After evaluating multiple live streaming solutions, we reached the following conclusion:

  • 24x7 linear streaming is not something that is a priority for most video streaming platforms. This makes sense: the rise of video-on-demand and event-based live streaming has come at the expense of linear streaming.
  • Most broadcasting platforms have their own guest apps which must be downloaded and set up in advance. This introduces unnecessary friction compared to clicking a link in the calendar invite to join a Continue reading

The 10 most powerful companies in enterprise networking 2020

Between the pandemic and the subsequent economic upheaval, these are challenging times for everyone. But the networking industry has some elements in its favor. Technologies such as Wi-Fi, VPNs, SD-WAN, videoconferencing and collaboration are playing an essential role in maintaining business operations and will play an even greater role in the reopening and recovery phase.To read this article in full, please click here(Insider Story)

NSX Secures Physical Servers with Bare Metal Agents

Our last blog on how NSX secures physical servers provided background on why physical server security is crucial. We cover the percentage share of physical servers to all workloads in the data center and the specific roles physical servers still play. Today, physical servers by percentage are playing a decreasing role in the data center. However, it’s still a vital one, as we pointed out in our last blog on Securing Physical Servers with NSX Service-defined Firewall. In this blog, we will cover a primary way VMware NSX provides secure connectivity for physical servers using a bare metal agent. VMware NSX-T can now offer secure connectivity for Linux and Windows Server physical servers.

How NSX Distributed Firewall Protects Physical Servers

There are several ways in which NSX can provide security for physical servers. Our original article, Extending the Power of NSX to Bare Metal, outlines each of these methods.

  • NSX Distributed Firewall (DFW) ingress rules for traffic from physical servers to virtual workloads
  • NSX DFW egress rules for traffic from virtual workloads to physical servers
  • The NSX Edge using centralized firewall rules to secure traffic between virtual and physical workloads
  • Use NSX agents in Physical Servers
Securing Physical Server with Bare Metal Agents

VMware NSX Continue reading

Network Break 291: F5 Patches Severe Vulnerability; Senate Bill Aims To Weaken Encryption

Today's Network Break podcast discusses critical security patches from F5 and Palo Alto Networks, examines the implications of a Senate bill that targets encryption, and dives into VMware's latest acquisition. We also explore a new space-oriented business unit at AWS and more tech news analysis.

The post Network Break 291: F5 Patches Severe Vulnerability; Senate Bill Aims To Weaken Encryption appeared first on Packet Pushers.

The Future of SD-WAN

SD-WAN has been one of the most hyped technologies in a long time but as the hype settles out and real world deployments start to take shape, the picture is becoming clearer on what SD-WAN is and is not. In this episode we take a look at the original promises, where we are today in relation to those promises, and what SD-WAN might look like in the years to come.

 

A considerable thank you to Unimus for sponsoring today’s episode. Unimus is a fast to deploy and easy to use Network Automation and Configuration Management solution. You can learn more about how you can start automating your network in under 15 minutes at unimus.net/nc.
Mike Pfeiffer
Guest
Tony Efantis
Host
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 The Future of SD-WAN appeared first on Network Collective.

The Week in Internet News: Facebook Faces Advertising Boycott

Voting with their dollars: Hundreds of companies have pulled their advertising from Facebook because of the social media giant’s lax policing of misinformation and hate speech, CNN reports. Still, most of the company’s biggest advertisers haven’t joined the boycott, and Facebook CEO Mark Zuckerberg has reportedly predicted “these advertisers will be back on the platform soon enough.”

Driving as a service: German car maker BMW is exploring ways to offer common features, like heated seats and cruise control, in a subscription-based, as-a-service model, The Independent reports. The Next Web called the subscription model “anti-consumer rubbish.” Video game maker Brianna Wu also tweeted her disappointment: “Sorry, but if this catches on, I will never buy another new car. Never.”

Networked threats: The U.S. Federal Communications Commission has designated Chinese networking companies Huawei and ZTE as national security threats, Al Jazeera says. This follows long-term concerns about the companies’ relationship with the Chinese Communist Party and the possibility of surveillance through their equipment. The FCC has proposed that rural telecom carriers be required to replace equipment from the two vendors.

Paying for speed: The Japanese government plans to subsidize local 5G companies as a way to catch up Continue reading

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