Flow Generation for Network Traffic Visibility (Device Independent)
17th September 2018 , comments(0)
In an ideal network, all infrastructure devices such as routers, firewalls, switches, wireless LAN controllers and so on would be capable of producing detailed metadata (such as NetFlow/IPFIX) about the traffic passing through them. These devices would then be capable of sending that metadata to a collector/analyser such as Scrutinizer for alerting, reporting, incident response, bandwidth optimisation and much more.
But what if your network infrastructure devices are unable to produce and send the necessary metadata? In some cases, only limited fields are available, in others, metadata generation is unavailable altogether. In some very rare scenarios, the volume of metadata the device would be required to generate would create an unacceptably high processor workload, potentially having an negative impact on network performance.
In these cases, a network probe can be used to generate rich network traffic metatdata. Network probes are available in either software or hardware appliance form. Network traffic can be fed to them using either a port on the device (SPAN - Switch Port Analyser - port mirror) or by using a TAP (Test Access Point). A TAP is fully independent of network devices and connects directly to the network on a pass through basis, with no performance impact.
Take a look at our range of network probes by ntop, Plixer and Endace, full scale network visibility devices by Gigamon and our network TAPs by Cubro.
Universal Serial Bus Power Delivery (USB PD) is due for release in 2014 providing 100W per port compared to the 'current' 10W per port of USB 3.0 making possible a wide range of innovative charging solutions.
What will you use USB PD for? Will you install structured USB PD ports in the walls and floors throughout your workspaces? Have your say here.
Quote of the week. Google founder Eric Schmidt on Apple replacing Google Maps on the iPhone with Apple's own mapping app: “We think it would have been better if they had kept ours. But what do I know?"
Are we really entering the "post-pc era" that Apple keep referring to?
Tablets are not replacing PCs, but they are becoming the preferred device for certain functions previously performed by a PC or laptop, such as accessing e-mail and calendars on the move. But there is not a lot of word processing or spreadsheet manipulation taking place on tablets or smartphones, nor much ERP and CRM data entry.
Gartner forecasts that PC sales will grow 4.4% this year, with 368 million units shipped, rising further to 400 million in 2013. That’s still plenty of cash for an era that is meant to be over.
What we are actually entering is the “post-PC-is-your-only-option” era.
Intel have long dominated the market for PC and server processors, while smaller British firm ARM and its large federation of manufacturing partners has held sway in the market for mobile chips. Now, with Intel using their Atom range of processors to target smart phone manufacturers and ARM making energy efficient chips for servers, each is attacking the others stronghold. Who do you think will win and what will it mean for users?
Microsoft’s support for Windows XP will end in 2014 but businesses should start migrating in 2012 to allow enough time for testing of legacy applications, particularly those which are hard-coded to run in IE6.
Amazon's legendary Elastic Compute Cloud (EC2) went off line following a routine upgrade on 21 April 2011. Is it time we started considering the use of multiple redundant clouds to ensure business continuity during an outage? Interoperability between different vendors cloud applications and services could also be improved.
Google's Android operating system is the most popular amongst recent buyers of smart-phones and Microsoft is unlikely to catch up. Will Microsoft now use its $37 billion cash pile to buy RIM/BlackBerry?
For most of us the announcement was a bolt from the blue... Obvious reasons for the move are a) clearing cash off the balance sheet and b) a desire to improve security in the growing wireless market. Can you think of any others?
Attended the International Association of Microsoft Certified Professionals (IAMCP) forum. Also visited the European Parliament for a meeting with Kay Swinburne MEP who is currently focused on Finance.
After much calculation and contemplation we have decided there is very little difference between VMware and Microsoft when it comes to the cost of virtualisation. Call us now to discuss the pro's and cons of both!
I think It's great that Dell are buying Perot Systems and diversifying their business. Might they have room for EMC too? I could draw out how the new company would look... if only I had a whiteboard ;-)