4 Main Design Principles of Mobile Networks
4 Main, Key Design Principles of Mobile Networks – I will explain the 4 key design principles of cellular networks in plain English. In fact I should have said, cell based systems as mobile networks may not be design based on cell based architecture. Let me explain what would be the other deployment […]
The post 4 Main Design Principles of Mobile Networks appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Declarative and Imperative Automation Thinking
Event driven or workflow driven automation for the uninitiated can appear daunting. With the rise of machine learning which adds more complexity to our field, simple rule driven automation feels more in reach than it ever has. This post aims to introduce you to a viewing lens for the world of great automation.
Converting processes in to workflows can be a tough task to accomplish and whilst this is relevant, it isn’t for this post. That’s one for another day but a great talking point and one that will be addressed.
The Layer Cake
Good automation tooling offers two views of the world; one high level that you pass arbitrary data around and one that handles interface implementation, which converts the arbitrary data to meaningful contextual data. In other words, a declarative and an imperative view, the ‘what’ and the ‘how’. The dimension that exists between the two can make or break the tool. If we have to care too much about how data is passed from one layer to the other, we’re not users, we’re more co-developers and it’s a kit not a tool.
Our Layer Cake model is simple at a high level. Two layers are enough to Continue reading
10 Places to Find Free Online IT Training
These websites offer excellent resources for IT infrastructure professionals looking to expand their knowledge.
Top 10 Networking and Security Sessions at VMworld Europe
At VMworld Europe 2016, we showed that network virtualization is mainstream and that NSX will illuminate the path to bring your data center into the future with robust security, speed, and agility.
One year later, NSX is out to show that it’s not just in the data center anymore… it’s everywhere. Beyond helping you master the data center, NSX is setting out to empower you to reign supreme over the cloud, remote and branch offices (ROBO), and even containers. To help you get there, VMworld Europe 2017 has 70+ networking and security sessions and 60+ NSX customers to share expertise and direct experience with NSX. And on top of all of that, VMware will be presenting an exciting new security product to help ensure your applications stay secure!
Check out the list of the top, not-to-be-missed networking and security sessions below. You should also explore the schedule builder on VMworld.com to reserve your spot in the top networking and security sessions as well as to discover the whole range of introductory and deep dive NSX sessions covering the entire use case spectrum.
See you in sunny Barcelona at VMworld Europe 2017!
| Date | Time | Session ID | Session Title |
| Tues Continue reading |
Why Is Cisco Pushing LISP in Enterprise Campus?
I got several questions along the lines of “why is Cisco pushing LISP instead of using EVPN in VXLAN-based Enterprise campus solutions?”
Honestly, I’m wondering that myself (and maybe I’ll get the answer in a few days @ NFD16). However, let’s start at the very beginning…
Read more ...Real-time traffic visualization using Netflix Vizceral
The simplest way to run the software is to use the pre-built Docker image:
docker run -p 6343:6343/udp -p 8008:8008 sflow/vizceralThe Docker image also contains demo data based on Netflix's public cloud infrastructure:
docker run -e "RTPROP=-Dviz.demo=yes" -p 8008:8008 sflow/vizceral
Delivering Dot
Since March 30, 2017, Cloudflare has been providing DNS Anycast service as additional F-Root instances under contract with ISC (the F-Root operator).
F-Root is a single IPv4 address plus a single IPv6 address which both ISC and Cloudflare announce to the global Internet as a shared Anycast. This document reviews how F-Root has performed since that date in March 2017.
The DNS root servers are an important utility provided to all clients on the Internet for free - all F root instances including those hosted on the Cloudflare network are a free service provided by both ISC and Cloudflare for public benefit. Because every online request begins with a DNS lookup, and every DNS lookup requires the retrieval of information stored on the DNS root servers, the DNS root servers plays an invaluable role to the functioning of the internet.
At Cloudflare, we were excited to work with ISC to bring greater security, speed and new software diversity to the root server system. First, the root servers, because of their crucial role, are often the subject of large scale volumetric DDoS attacks, which Cloudflare specializes in mitigating (Cloudflare is currently mitigating two concurrently ongoing DDoS attacks as we write this). Continue reading
Cisco Firepower 2140 BOQ with licensing models
As per my previous article on the new Next Generation Firewall Cisco Firepower 2100, Today I am going to talk about the hardware and the actual BOQ required for the features mentioned in the header.
I got so many requests from the people to provide the BOQ for the Cisco Firepower 2140 with AVC+IPS Licensing model. In this article I will come up with all the licensing model of Cisco Firepower 2100 Next generation firewall.
If you missed my earlier article on Cisco Firepower 2100 series Next Generation Firewalls, below is the link for your reference.
Cisco Firepower 2100 Next Generation Firewalls Introduction
So lets discuss about the BOQ for all the 3 licensing model in Cisco Firepower 2100 Series Next Generation Firewalls. Before i come with the BOQ, one thing i want to tell you that with the NGFW image of the Cisco Firepower 2100 Series AVC is inbuilt feature. AVC stands for Application visibility and you can have all the management on the Firesight management console which can be either on VM or by using the dedicated appliances.
We have three licensing model and they are :
I got so many requests from the people to provide the BOQ for the Cisco Firepower 2140 with AVC+IPS Licensing model. In this article I will come up with all the licensing model of Cisco Firepower 2100 Next generation firewall.
If you missed my earlier article on Cisco Firepower 2100 series Next Generation Firewalls, below is the link for your reference.
Cisco Firepower 2100 Next Generation Firewalls Introduction
So lets discuss about the BOQ for all the 3 licensing model in Cisco Firepower 2100 Series Next Generation Firewalls. Before i come with the BOQ, one thing i want to tell you that with the NGFW image of the Cisco Firepower 2100 Series AVC is inbuilt feature. AVC stands for Application visibility and you can have all the management on the Firesight management console which can be either on VM or by using the dedicated appliances.
We have three licensing model and they are :
- L-FPR2140T-T= This License stands for the NGIPS feature in Cisco Firepower Continue reading
Network automation best practices for DevOps
Optimizing a network for maximum efficiency almost always requires some level of automation. From provisioning resources to configuring processes and applications, network automation can improve upon the consistency of network operations while also reducing the resources needed to maintain the network. That being said, network automation can be exceedingly complex as well. Following network automation best practices is necessary to ensure that automation doesn’t interfere with or compromise the network.
Create a centralized hub for automated services
As networks grow, it can be tempting to add new services and tools one by one. Unfortunately, piecemeal additions can quickly become haphazard and difficult to maintain. Automated services should always be controlled through a single API or centralized hub, to improve upon reporting, maintenance, consistency and optimization.
Network automation suites have been developed to be robust enough that they can use the same code base for computing, networking, and storage, thereby significantly simplifying network optimization and other related processes. Ansible is one example of a network automation tool that can help you embrace DevOps as a network automation best practices, though there are many others. IT departments will find the process of automation easier to manage and maintain when filtered through a Continue reading
Hurricane Irma
Yesterday, we described how Hurricane Irma impacted several Caribbean islands, with the damage including a significant disruption to Internet access.
Source: accuweather.comAs Irma is now forecast to hit southern Florida as category 5 this weekend with gusty winds reaching up to 155mph, it is also expected that Internet infrastructure in the region will suffer.
At the time of writing, we haven’t noticed any decrease in traffic in the region of Miami despite calls to evacuate.
Resilient Data Centers
Contrary to popular belief, Internet wasn't built for the purpose of resisting a nuclear attack. That doesn't mean that datacenters aren't built to resist catastrophic events.
The Miami datacenter housing servers for Cloudflare and other Internet operators is classified as Tier IV. What does this tiering mean? As defined by the ANSI (American National Standards Institute), a Tier IV datacenter is the stringent classification in term of redundancy of the critical components of a datacenter: power and cooling. It guarantees 99.995% uptime per year, that is only 26 minutes of unavailability. Tier IV datacenters provide this level of uptime by being connected to separate power grids, allowing their customers to connect their devices to both of these grids. They Continue reading
Cisco Next Generation Firewalls : Cisco Firepower 2100 Series
Today I am going to talk about the Cisco Next Generation Firewalls named as Cisco Firepowers. Firepower is gaining the market with the best features of NGFW. Cisco uses both images of ASA and NGFW with various features.
In this article I am specifically talking about the Cisco Firepower 2100 Series. You can have two different models with the various licensing models in Cisco 2100 series firewall. One model is Cisco Firepower with ASA image where you can have the same capabilities of ASA CLI model and the other Cisco model is Cisco Firepower with NGFW image.
Let's talk about NGFW image, Cisco Firepower 2100 with NGFW image ( Next Generation Firewall) having Application visibility inbuilt and have three other licensing which will provide you the features of NGIPS ( Cisco Next-Generation Intrusion Prevention System) , AMP ( Advance Malware Protection) , Content filtering ( URL filtering ).
Now If you are going to have the customer who wants the next generation firewalls, ofcourse Cisco Firepower with NGFW image is there to support you. Let me talk about the general features of Cisco Firepower 2100 Series Next Generation firewall with the Continue reading
In this article I am specifically talking about the Cisco Firepower 2100 Series. You can have two different models with the various licensing models in Cisco 2100 series firewall. One model is Cisco Firepower with ASA image where you can have the same capabilities of ASA CLI model and the other Cisco model is Cisco Firepower with NGFW image.
Let's talk about NGFW image, Cisco Firepower 2100 with NGFW image ( Next Generation Firewall) having Application visibility inbuilt and have three other licensing which will provide you the features of NGIPS ( Cisco Next-Generation Intrusion Prevention System) , AMP ( Advance Malware Protection) , Content filtering ( URL filtering ).
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| Fig 1.1- Cisco Firepower 2100 Series |
Now If you are going to have the customer who wants the next generation firewalls, ofcourse Cisco Firepower with NGFW image is there to support you. Let me talk about the general features of Cisco Firepower 2100 Series Next Generation firewall with the Continue reading
[minipost] Protecting SSH on Mikrotik with 3-strike SSH ban using only firewall rules
After working with Mikrotik / RouterBoard routers for a long time, I recently needed to replace an aging old wifi router at my parents and the recent brand of very cheap Mikrotik WIFI integrated routers (RB941-2nD-TC shown on left) that you can get under 20,-EUR was a great deal with an added bonus that I want to manage all this remotely and not visit physically every time there is a wifi problem. So following my previous post on how to put a little script into Mirkotik to email you it’s public address whenever it changes (a mandatory to manage parent’s home router using dynamic public IP from ISP) I was also concerned about publicly opened SSH port and wanted at least basic protection on it. Most of you are probably using already some great tool such as fail2ban on linux, that scans log files and if it notices three bad logins to SSH from an IP, it will put the IP into a blocking filter on the local linux iptables firewall so it can no longer harass your system. Well I needed something similar on my home Mikrotik router/firewall, but without impacting its performance or doing a lot Continue reading
Show 356: Oracle Ravello’s Networking 2.0 (Sponsored)
The Packet Pushers talk with sponsor Oracle Ravello about the Networking 2.0 enhancements to its hypervisor, which lets you move VMs to the cloud without the need for underlying changes. The post Show 356: Oracle Ravello’s Networking 2.0 (Sponsored) appeared first on Packet Pushers.
Worth Reading: Time is not on your side
The post Worth Reading: Time is not on your side appeared first on rule 11 reader.
Report Ranks SD-WAN Leaders Based on Q2 Revenues
The overall SD-WAN market increased 33 percent since first quarter 2017.
Will VMware-AWS Deal Rain on IBM Cloud Partnership?
IBM was the first cloud provider to partner with VMware.