The bugs could have allowed hackers to attack enterprise servers.
Got a New Year’s resolution for a data center revolution? We’ve got your back! The Cumulus content roundup is here to make sure you start out 2018 on the right foot. With a variety of blog posts, videos and networking resources at your disposal, you’ll find that upgrading your networking knowledge is an easily achievable goal (and much easier than starting a diet or going to the gym). Don’t worry, we won’t tell anyone if you’ve already broken your resolution! It’s a time for new beginnings and looking to the future; let’s check out what’s in store.
Cumulus in the Cloud overview: What is Cumulus in the Cloud, and what can it do for you? In this video overview, let CTO JR Rivers walk you through the pre-built virtual data center and teach you all about the great Cumulus tech you can play with.
NCLU: Network Command Line Utility overview: There’s a new chapter in our how-to video series. This time, our highly qualified instructors will teach you the ins and outs of Cumulus Networks CLI, the Network Command Line Utility. Watch the tutorial to learn more.
Open networking drives forward with Cumulus Linux Continue reading
DCI is set to be significant driver of the optical networking space.
Key members of Loggly's team will join SolarWinds.
This is just the latest setback for Huawei’s ambitions in the United States.
A (long) time ago, a reader asked me about RFC4456, section 10, which says:
Care should be taken to make sure that none of the BGP path attributes defined above can be modified through configuration when exchanging internal routing information between RRs and Clients and Non-Clients. Their modification could potentially result in routing loops. In addition, when a RR reflects a route, it SHOULD NOT modify the following path attributes: NEXT_HOP, AS_PATH, LOCAL_PREF, and MED. Their modification could potentially result in routing loops.
On first reading, this seems a little strange—how could modifying the next hop, Local Preference, or MED at a route reflector cause a routing loop? While contrived, the following network illustrates the principle.
Note the best path, from an IGP perspective, from C to E is through B, and the best path, from an IGP perspective, from B to D is through C. In this case, a route is advertised over eBGP from F towards E and D. These two eBGP speakers, in turn, advertise the route to their iBGP neighbors, B and C. Both B and C are route reflectors, so they both reflect the route on to A, which advertises the route to some other Continue reading
How was the state of the Internet’s routing system in 2017? Let’s take a look back using data from BGPStream. Some highlights:
An ‘incident’ is a suspicious change in the state of the routing system that can be attributed to an outage or a routing attack, like a route leak or hijack (either intentional or due to a configuration mistake).[i] Let’s look at just a few examples of incidents picked up by the media.
March 2017. SECW Telecom in Brazil hijacked prefixes of Cloudflare, Google, and BancoBrazil causing some outage for these services in the region.
April 2017. Large chunks of network traffic belonging to MasterCard, Visa, and more than two dozen other financial services companies were briefly routed through a Russian telecom. For several minutes, Rostelecom was originating 50 prefixes for numerous other Autonomous Systems, hijacking their traffic.
August 2017. Google accidentally leaked BGP prefixes it learned from peering relationships, essentially becoming a transit provider instead Continue reading
I’ve reorganized the menu on the left just a little, combining some items under “reading,” and adding a new item called “topics.” Under this new item, you’ll find collections of articles on specific topics from other sources, starting with the ‘net neutrality page and the meltdown and spectre post reformatted as a page, with some new additions. I’m always trying to find new ways to organize the information here, making it easier to find things; hopefully this is a useful change.
The virtual evolved packet core is one of the best working examples of NFV in a mobile operator network.
Disaster recovery used to be a pretty complex beast — but that isn’t really the case anymore.
Hey look, Microsoft just arrived in 2010.
For a long while now I’ve been brainstorming how I could leverage the API that’s present in the Cisco Spark collaboration platform to create a bot. There are lots of goofy and fun examples of bots (ie, Gifbot) that I might be able to draw inspiration from, but I wanted to create something that would provide high value to myself and anyone else that choose to download and use it. The idea finally hit me after I started using Zabbix for system monitoring. Since Zabbix also has a feature-rich API, all the pieces were in place to create a bot that would act as a bit of middle-ware between Zabbix and Spark. I call the bot: Zpark.
Instead of relying on Zabbix to initiate an email or SMS to alert me of a new issue, I now route all notifications through Zpark and get notified right within my Cisco Spark client. And since I have the Spark client on all of my devices, I can receive alerts no matter where I am or what I’m doing.
Zpark alerts:
In 2017, the Internet Society unveiled the 2017 Global Internet Report: Paths to Our Digital Future. The interactive report identifies the drivers affecting tomorrow’s Internet and their impact on Media & Society, Digital Divides, and Personal Rights & Freedoms. We interviewed two people – the new OSCE Representative on Freedom of the Media and a an emerging leader from Brazil, an Internet Society 25 Under 25 awardee – to hear their different perspectives on the forces shaping the Internet’s future: Harlem Désir and Paula Côrte Real.
Harlem Désir is the Operation for Security and Cooperation in Europe (OSCE) Representative on Freedom of the Media. Prior to his current position, Désir was French Minister of State for European Affairs, attached to the French Minister of Foreign Affairs and International Development, and a member of the European Parliament for three consecutive terms from 1999 to 2014.
(You can read Paula Côrte Real’s interview here.)
The Internet Society: What could impact the future of freedom of expression online?
Harlem Désir: There is an ongoing shift under our feet which could result in a less open, global, and free Internet. A combination of factors, including legitimate security concerns in the fight against terrorism or the fight Continue reading
In 2017, the Internet Society unveiled the 2017 Global Internet Report: Paths to Our Digital Future. The interactive report identifies the drivers affecting tomorrow’s Internet and their impact on Media & Society, Digital Divides, and Personal Rights & Freedoms. We interviewed two people – the new OSCE Representative on Freedom of the Media and a an emerging leader from Brazil, an Internet Society 25 Under 25 awardee – to hear their different perspectives on the forces shaping the Internet’s future: Harlem Désir and Paula Côrte Real.
Paula Côrte Real is a 24-year-old Brazilian who hopes to help create a safe and secure Internet experience for Brazil’s youth through her involvement in several youth engagement programs. One of those, led by the Commission of Information Technology Law from the Brazilian Bar Association in Pernambuco, helps students learn how to protect themselves while using the Internet. It also tackles current issues such as cyberbullying and cyberstalking. To date, the project has reached approximately 2,000 public school students between the ages of 15 and 18. In 2017, she was awarded the Internet Society’s 25 under 25 award for making an impact on her community and beyond.
(You can read Harlem Désir’s interview here.)
The Continue reading