Open Source: Not Just About AI, Blockchains, and Kubernetes
OSCON 2018 did a great job of highlighting women and people of color in their programming.
Cloudflare Access: Now teams of any size can turn off their VPN
Using a VPN is painful. Logging-in interrupts your workflow. You have to remember a separate set of credentials, which your administrator has to manage. The VPN slows you down when you're away from the office. Beyond just inconvenience, a VPN can pose a real security risk. A single infected device or malicious user can compromise your network once inside the perimeter.
In response, large enterprises have deployed expensive zero trust solutions. The name sounds counterintuitive - don’t we want to add trust to our network security? Zero trust refers to the default state of these tools. They trust no one; each request has to prove that itself. This architecture, most notably demonstrated at Google with Beyondcorp, has allowed teams to start to migrate to a more secure method of access control.
However, users of zero trust tools still suffer from the same latency problems they endured with old-school VPNs. Even worse, the price tag puts these tools out of reach for most teams.
Here at Cloudflare, we shared those same frustrations with VPNs. After evaluating our options, we realized we could build a better zero trust solution by leveraging some of the unique capabilities we have here at Cloudflare:
Our Continue reading
Google Takes On Public Cloud Rivals With Private Kubernetes Service
As the underdog in cloud computing, Google has to take a slightly different tack from industry pioneer and juggernaut Amazon Web Services, which simply believes that all applications should, in the fullness of time, move to the public cloud. …
Google Takes On Public Cloud Rivals With Private Kubernetes Service was written by Timothy Prickett Morgan at .
Gigamon Dives Deeper Into Security Space With Icebrg Acquisition
Gigamon will combine its network traffic visibility capabilities with Icebrg’s security platform and allow SOC teams to deploy new security technologies as “security applications” on top of it.
How to Get Your Apps off Windows 2003 and Into the Cloud with Docker Enterprise
Docker Windows Containers with Docker Enterprise
A huge number of companies are still running apps on Windows Server 2003 and 2008 in the data center. They want to move to a modern, secure, supported platform which gives them the flexibility to run in the data center today – and in any cloud tomorrow. Docker gives them that flexibility, and you can move your apps to Docker without changing any code.
That was the focus of our recent webinar, where we showed several apps currently running on Windows Server 2003, and packaged them to run as Docker Windows containers. We showed all the steps to migrate the apps with no code changes, and then we ran them in Docker Enterprise on a Windows Server 2016 VM running in Azure.
You can watch the full video of the webinar here – it comes in at just over 60 minutes:
In the webinar, you see the portability that Docker Enterprise gives you. The applications we move are a mixture of older web technologies – static HTML, classic ASP and ASP.NET WebForms. The apps from the demo and the Dockerfiles are on GitHub here. They could be 15-year old apps and you Continue reading
Today, Chrome Takes Another Step Forward in Addressing the Design Flaw That is an Unencrypted Web
The following is a guest post by Troy Hunt, awarded Security expert, blogger, and Pluralsight author. He’s also the creator of the popular Have I been pwned?, the free aggregation service that helps the owners of over 5 billion accounts impacted by data breaches.
I still clearly remember my first foray onto the internet as a university student back in the mid 90's. It was a simpler online time back then, of course; we weren't doing our personal banking or our tax returns or handling our medical records so the whole premise of encrypting the transport layer wasn't exactly a high priority. In time, those services came along and so did the need to have some assurances about the confidentiality of the material we were sending around over other people's networks and computers. SSL as it was at the time was costly, but hey, banks and the like could absorb that given the nature of their businesses. However, at the time, there were all sorts of problems with the premise of serving traffic securely ranging from the cost of certs to the effort involved in obtaining and configuring them through to the performance hit on the Continue reading
Cumulus content roundup: July
Time for another Cumulus content roundup! We’ve been really busy this summer, so there’s a little bit of everything in this post: videos, industry news articles, new podcast episodes and even an entire book! So if you’ve got room on your summer reading list, be sure to add EVPN in the Data Center. Or, if you’ve got too much to do and can’t find time to sit down and read, grab a pair of headphones and listen to the latest episode of Kernel of Truth while you work. The choice is yours!
New from Cumulus
Kernel of Truth episode 03 — Linux: the kernel, the community & beyond: You can’t name an open networking podcast “Kernel of Truth,” and NOT have an episode dedicated to the Linux kernel! Listen to our discussion about the Linux community and why Linux belongs in the data center.
EVPN in the Data Center: This eBook cuts through the fog and explains how you can deploy this technology seamlessly in your data center. You’ll discover why EVPN can be simpler to use in data centers than in service provider networks.
Vault Systems customer video: As a cloud provider for the Australian government, Continue reading
MPLS Intro Series – VPNv4 Packet Walk
In our last article, we configured and tested a basic VPNv4 configuration. In this article, we will do a hop by hop analysis of each device and look at a packet capture for a couple of the steps in the label switched path. We are using the exact same topology and router names. For the example, I have shut down the connection between P4 and PE2 so no load balancing will occur and we have a deterministic path to analyze.
For the analysis, we will examine the path from CE_Site_1 to 20.2.2.2 at CE_Site_2. For each device, we want to determine the egress interface, the next hop and any MPLS labels that should be present.
CE_Site_1 – forwarding a packet to destination 20.2.2.2
CE_Site_1#show ip cef 20.2.2.2 0.0.0.0/0 nexthop 10.1.1.1 GigabitEthernet2
CE_Site_1 is using the default route with a next-hop of 10.1.1.1
PE1 – receive a packet on Gi4 (vrf RED), forwarding for destination 20.2.2.2
//based on physical topology, we know this will arrive on Gi4 of PE1 PE1#show vrf brief Name Default RD Protocols Interfaces BLUE 110:210 ipv4 Gi5 Mgmt-intf Continue reading
MPLS Intro Series – Introduction to VPNv4
In the previous article, we took a look at building a simple label switched path (LSP) through an MPLS network. This article takes the configuration a step further and leverages multiple labels to connect and isolate VRFs over an MPLS core. This is known as MPLS VPNv4. My goal is to introduce a method to bring together VRF segmentation concepts and provide a framework for a scalable deployment.
Before we get started, I am going to rename the routers once again based on their target function. An LER in a VPNv4 configuration is known as a PE node. An LSR router is known as a P node. I am also introducing CE (customer edge) nodes into the topology.
Desired End State
In this example, we will allow CE_Site_1 to communicate with CE_Site_2. Likewise, we want CE_Site_3 to communicate with CE_Site_4.
Terms
- P Router – provider router, is considered transit in a label switched path, the term is often used interchangeably with LSR
- PE Router – provider edge router and sits on the provider side of the provider/customer interconnection. Has most of the intelligence and configuration for an LSP and allows a scale-out architecture. The term PE is more common Continue reading
2018 Internet Society Asia-Pacific & Middle East Chapters Meeting
The APAC & Middle East Chapters joined hands to organize their combined Regional Chapters Meeting from 11 to 12 May in Kathmandu, Nepal. 23 Fellows representing 18 regional Chapters and Women SIG were nominated by their respective Chapters/SIGs to participate in this meeting. Half of the meeting focused on collaboratively developing action plans that are aligned with the Internet Society’s 2018 campaigns, while the other half was to discuss and address regional and governance-related issues.
At the end of the workshop, 18 concrete plans were ready for implementation:
- 3 Community Networks plans (Afghanistan, Pakistan, Philippines)
- 5 Internet of Things plans (Bangladesh, India Mumbai, Sri Lanka, UAE, Yemen)
- 9 Collaborative Governance plans (India Trivandrum, India Delhi, Indonesia, Lebanon, Malaysia, Nepal, Palestine, PICISOC, Women SIG)
- 1 Mutually Agreed Norms for Routing Security plan (India Kolkata)
During the regional breakout sessions, Fellows from the APAC region voted for and discussed three major regional issues: 1) Cybersecurity, 2) Transition [of the Internet] to the younger generation, 3) Digital Literacy. They engaged in an open discussion and highlighted some of the specific issues under these topics, what is needed in the context of their region, and shared their plans to address them.
The regional Continue reading
Juniper Networks Infuses 400GbE Across Its Portfolio
“We believe we are the first to come to the market with 400 Gig,” says Juniper’s CTO.
MPLS Intro Series – Understanding a Simple LSP
In the previous article, we created an interesting situation with an iBGP configuration. In that example, we made Edge2 aware of a route via BGP that the intermediary hops would not see. In this article, we will fix this problem using MPLS and label switching. Before getting started, I feel compelled to rename these routers based on their target role in an MPLS our network.
Terms
- MPLS – multiprotocol label switching – using labels or tags to forward packets over a network (as opposed to traditional destination based routing)
- LSR – Label switch router (transit router), aka P router, switches labels
- LER – Label edge router or Edge LSR, often called a PE router, may push (impose) labels
- LSP – Label Switched Path
- Push – insert/impose a lable
- Swap – change a label
- Pop – remove a label
As we left it in our previous configuration, the router on the right sees a route to 1.0.1.1 via BGP but it cannot reach that destination. It is worth mentioning that I disabled BGP sync (following the last example I shared in the previous article).
LER2#show ip route | inc 1.0.1.1 B 1.0.1.1 Continue reading
Free Network Performance Test Tool: Wget
In this video, Tony Fortunato shows you how to test bandwidth using Wget. He explains how to get started with the free software and demonstrates how it works.
Clearing the TensorFlow to FPGA Path
Despite some of the inherent complexities of using FPGAs for implementing deep neural networks, there is a strong efficiency case for using reprogrammable devices for both training and inference. …
Clearing the TensorFlow to FPGA Path was written by Nicole Hemsoth at .