Vendor Lock-In. Maybe Not So Evil. (Video)
Is vendor lock-in all that bad? Many argue yes. You’re tied to a vendor because you’ve used some of their proprietary technology, and so you’re (apparently) stuck with it forever, limiting your future business agility. I think that’s an incomplete argument, though.
Tools 1. Top 5 tools for network performance troubleshooting
Hello my friend,
some time ago we’ve been recently engaged in the troubleshooting of the performance issues. Namely, the speed of the communication between the application’s endpoints in two data centres was not persistent. Instead, it was deviating a lot having multiple TCP retransmissions for certain flows. The issues was successfully solved, and we’d like to share with you the tools we have used to identify and validate various aspects of traffic forwarding.
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Can automation help with performance troubleshooting?
Absolutely. During our network automation training we show how to utilise various Linux tools from configuration management tools (e.g. Ansible) and programming languages (Bash, Python). That gives you ready examples from our training, which you can use in your network immediately, and endless possibilities to create your own automated troubleshooting workflows.
Our network automation training has two faces: either live or self-paced. So you can choose yourself, what works better for you. On our side, we Continue reading
The Hedge Podcast #60: Ben Andresen and Growing Teams
How can managers grow teams that add value to the company? Teams are made up of people, and people need to grow, so the key is in learning how to grow people. Join us at the Hedge as we discuss learning paths, doing what’s right for the company and the person, and growing teams by growing people.
Briefings In Brief 098: Cisco Tetration Enables Microsegmentation And App Dependency Mapping
Cisco Tetration enables microsegmentation and application dependency mapping for on-premises and cloud applications. This Briefings In Brief explores essential details on Tetration, including how it works and how it fits with other products in Cisco's portfolio. This briefing is based on a Security Field Day presentation by Cisco on the Tetration product.
The post Briefings In Brief 098: Cisco Tetration Enables Microsegmentation And App Dependency Mapping appeared first on Packet Pushers.
Briefings In Brief 098: Cisco Tetration Enables Microsegmentation And App Dependency Mapping
Cisco Tetration enables microsegmentation and application dependency mapping for on-premises and cloud applications. This Briefings In Brief explores essential details on Tetration, including how it works and how it fits with other products in Cisco's portfolio. This briefing is based on a Security Field Day presentation by Cisco on the Tetration product.IT Employment Trending Up; Data, Cybersecurity Skills in Demand
There's a light at the end of the tunnel for IT pros who have been keeping a close eye on the job market. Plus, here are the skills that employers want in 2021.Contributing to the Internet Society Governance Reform Working Group
[Published on behalf of the Internet Society Board of Trustees]
As we announced some time ago, the Board of Trustees of the Internet Society (ISOC) has established the Governance Reform Working Group in order to host open community discussion on the general topic of potential governance changes at the Internet Society. We would like to welcome all members of any Internet Society Chapter, Organization Member, SIG, as well as individual members and IETF participants to contribute to this effort. Please, find the initial charter for the working group at:
https://www.internetsociety.org/board-of-trustees/governance-reform-working-group-charter/
Olga Cavalli and Mike Godwin will be the chair and vice-chair of the working group, respectively. You can subscribe to the working group’s mailing list in order to contribute to the discussion on the following link (where you can also check the mailing list archives) :
https://elists.isoc.org/mailman/listinfo/governance-reform
The post Contributing to the Internet Society Governance Reform Working Group appeared first on Internet Society.
Cumulus Networks and Broadcom Part Ways – Now What?
The open networking market has certainly been an exciting place in 2020. Earlier in the year I wrote a blog...Day Two Cloud 075: Operationalizing Your Hybrid Cloud With VMware vRealize (Sponsored)
Consistency is key for your cloud operations team and your end users (be they employees, customers, or developers). On today's Day Two Cloud episode with sponsor VMware, we discuss how to implement consistent operations for your hybrid cloud. Our guests from VMware are Brandon Gordon, Staff Technical Marketing Architect; and Matt Bradford, Sr. Technical Marketing Manager.Day Two Cloud 075: Operationalizing Your Hybrid Cloud With VMware vRealize (Sponsored)
Consistency is key for your cloud operations team and your end users (be they employees, customers, or developers). On today's Day Two Cloud episode with sponsor VMware, we discuss how to implement consistent operations for your hybrid cloud. Our guests from VMware are Brandon Gordon, Staff Technical Marketing Architect; and Matt Bradford, Sr. Technical Marketing Manager.
The post Day Two Cloud 075: Operationalizing Your Hybrid Cloud With VMware vRealize (Sponsored) appeared first on Packet Pushers.
Onno Purbo: 2020 Postel Award Winner Uses Human Touch to Bridge the Digital Divide
Onno Purbo is a people person. It’s not typically something you hear about an engineer. But it is through his approach to education in the Internet sphere that Indonesian villages have access at all.
“The other engineers, they are very much engineer,” Purbo said. “A problem is solved by coding, is solved by an antenna, is solved by a product of some kind. My approach is a more human approach. Most engineers introduce their products, I give people the knowledge.”
Purbo, as this year’s Jonathan B. Postel Award winner, uses his experience, knowledge, and expertise not only to build networks and improve access for his fellow Indonesians, but to teach them how to do it themselves. He does this through hours of work on social media channels, speaking one-on-one with hundreds of thousands of followers whenever they have questions or concerns.
“I use social media as a free, huge class[room]. Effective and efficient empowerment processes were not possible with the old mechanism where we would rent rooms or buildings with professional event organizers,” Purbo said. “These days, for example, thousands of viewers may easily view any of my videos on YouTube.”
With nearly 700,000 followers on social Continue reading
Network-layer DDoS attack trends for Q3 2020
DDoS attacks are surging — both in frequency and sophistication. After doubling from Q1 to Q2, the total number of network layer attacks observed in Q3 doubled again — resulting in a 4x increase in number compared to the pre-COVID levels in the first quarter. Cloudflare also observed more attack vectors deployed than ever — in fact, while SYN, RST, and UDP floods continue to dominate the landscape, we saw an explosion in protocol specific attacks such as mDNS, Memcached, and Jenkins DoS attacks.
Here are other key network layer DDoS trends we observed in Q3:
- Majority of the attacks are under 500 Mbps and 1 Mpps — both still suffice to cause service disruptions
- We continue to see a majority of attacks be under 1 hr in duration
- Ransom-driven DDoS attacks (RDDoS) are on the rise as groups claiming to be Fancy Bear, Cozy Bear and the Lazarus Group extort organizations around the world. As of this writing, the ransom campaign is still ongoing. See a special note on this below.
Number of attacks
The total number of L3/4 DDoS attacks we observe on our network continues to increase substantially, as indicated in the graph below. All in all, Continue reading
Why Is OSPF not Using TCP?
A Network Artist sent me a long list of OSPF-related questions after watching the Routing Protocols section of our How Networks Really Work webinar. Starting with an easy one:
From historical perspective, any idea why OSPF guys invented their own transport protocol instead of just relying upon TCP?
I wasn’t there when OSPF was designed, but I have a few possible explanations. Let’s start with the what functionality should the transport protocol provide reasons:
Why Is OSPF not Using TCP?
A Network Artist sent me a long list of OSPF-related questions after watching the Routing Protocols section of our How Networks Really Work webinar. Starting with an easy one:
From historical perspective, any idea why OSPF guys invented their own transport protocol instead of just relying upon TCP?
I wasn’t there when OSPF was designed, but I have a few possible explanations. Let’s start with the what functionality should the transport protocol provide reasons: