Networking Archives - Page 2301 of 3455

Certificate policy violations force reform at StartCom and WoSign

The top management of StartCom and WoSign will be replaced and the two certificate authorities will undergo audits after browser vendors discovered that they mis-issued many digital certificates, violating industry rules. The investigation launched by Mozilla led to the discovery of 13 instances where China-based WoSign and its subsidiary StartCom issued certificates with various types of problems. Evidence was also found that both CAs issued certificates signed with the SHA-1 algorithm after Jan. 1 in violation of industry rules and intentionally backdated them to avoid being caught. As a result, Mozilla said that it has lost faith in the ability of WoSign and StartCom to correctly carry out the functions of a CA and announced that it will stop trusting new certificates from the two companies. Apple followed suit and announced its own ban for future WoSign and StartCom certificates last week.To read this article in full or to leave a comment, please click here

Collecting Docker Swarm service metrics

This article demonstrates how to address the challenge of monitoring dynamic Docker Swarm deployments and track service performance metrics using existing on-premises and cloud monitoring tools like Ganglia, Graphite, InfluxDB, Grafana, SignalFX, Librato, etc.

In this example, Docker Swarm is used to deploy a simple web service on a four node cluster:

docker service create --replicas 2 -p 80:80 --name apache httpd:2.4

Next, the following script tests the agility of monitoring systems by constantly changing the number of replicas in the service:

#!/bin/bash
while true
do
  docker service scale apache=$(( ( RANDOM % 20 )  + 1 ))
  sleep 30
done

The above test is easy to set up and is a quick way to stress test monitoring systems and reveal accuracy and performance problems when they are confronted with container workloads.

Many approaches to gathering and recording metrics were developed for static environments and have a great deal of difficulty tracking rapidly changing container-based service pools without missing information, leaking resources, and slowing down. For example, each new container in Docker Swarm has unique name, e.g. apache.16.17w67u9157wlri7trd854x6q0. Monitoring solutions that record container names, or even worse, index data by container name, will suffer from bloated Continue reading

Doxing, trolling and ‘grossly offensive’ communications are now illegal in the UK

To observe Hate Crime Awareness Week, the UK’s Crown Prosecution Service (CPS) is cracking down on internet bullies and trolls. Actions like posting humiliating photoshopped images of people on social media platforms, creating derogatory hashtags and doxing can get cyber bullies prosecuted.CPS published new social media guidelines to help prosecutors determine which online actions are illegal. The guidelines take aim at doxing, inciting virtual mobbing – encouraging others to participate in online harassment – and fake social media profiles used for online abuse to name but a few.Retweeting something the CPS considers “grossly offensive, indecent, obscene or false” can also land a person in legal hot water. Yet Alison Saunders, CPS director of public prosecutions, stressed to the BCC that prosecutors can’t use the guidelines to “stifle free speech.” People in the UK better check out what actions are now illegal since saying you didn’t know it was illegal just won’t cut it.To read this article in full or to leave a comment, please click here

Doxing, trolling and ‘grossly offensive’ communications are now illegal in the UK

Metaswitch & HPE Bring Virtualized IMS to Telcos

Metaswitch also completed all certifications in HPE’s OpenNFV.

Is Monitoring the Perfect Application for SDN?

SDN provides the perfect fit for network monitoring.

Deconstructing Software-Defined Storage

Find out key traits of this emerging data storage technology and important vendors in the market.

IDG Contributor Network: When medical alarm standards fail patients and health professionals

Healthcare facilities are heavily regulated environments. From electronic health records to how fire doors in a hospital need to be installed, many different organizations and government agencies regulate the healthcare industry.Medical alarms are one aspect of healthcare that is heavily standardized. The IV pump will “ding” if a tube becomes kinked. And because of movies with melodramatic scenes in the hospital, most people are aware of the heartbeat in the background beeping over the actors’ voices.What patients, healthcare providers and family members may not realize is all alarms are required to meet an international standard. The international standard for medical electrical equipment (IEC 60601-1-8) from the International Standards Organization (ISO) specifies performance and alarm categories and sound specifications. All manufacturers design and build to the standard for their individual devices. The standard was created to help make the alarms discernible from other sounds in the hospital, but the device manufacturer will not know which alarm is most important, so a healthcare professional needs to be able to hear all of the alarms.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Upskilling staff through disruptive times

These days, more than ever before, the terms “game changer” and “disruptive” are thrown around with abandon. Everyone is fighting to be known as the Uber of X. But whenever a game changes, the need to learn new rules arises. And when something is disruptive, the routines we’ve picked up over the years are thrown off kilter. The need to teach a new way of doing things becomes vital. It’s one thing to go through the implementation of a new system, infrastructure or standard. It’s another thing entirely to get everyone used to a whole new system. It is a case of “adapt or die.” + Also on Network World: The IT skills gap is a reality, but doesn’t have to be +To read this article in full or to leave a comment, please click here

Python Network Programming: Handling Socket Errors

This excerpt from "Python Network Programming Cookbook" shows you how to use Python for managing socket errors.

The Networking Burden

In networking, every decision has a consequence.

What IT admins love/hate about 8 top network monitoring tools

Network monitoring systems typically look for slow, overloaded, failing or crashed servers, routers, switches and network connections – and alert network administrators to the problem. According to the IT Central Station user community, the most important criteria to consider when choosing network monitoring software are scalability, flexibility and multi-tenancy.Eight of the top-ranked network monitoring software products are CA Unified Infrastructure Management, SevOne, Microsoft SCOM, FortiSIEM (AccelOps), ScienceLogic, NetScout TruView, Opsview Enterprise and Nagios, according to online reviews by enterprise users in the IT Central Station community.To read this article in full or to leave a comment, please click here(Insider Story)

Boost your productivity with these seven apps

When you think mobile apps, the names that come to mind are probably Facebook (including Messenger), YouTube and Google (Search, Play, Maps and Mail), all of which sit atop Nielsen’s list of most popular apps.To read this article in full or to leave a comment, please click here(Insider Story)

Design considerations for network mergers and acquisitions

Network mergers and acquisitions are the processes which can be seen in any type of businesses. As a network designers, our job to identify the business requirements of both existing networks and the merged network and finding best possible technical solutions for the business. There are many different areas which need to be analyzed carefully. Wrong business requirement […]

The post Design considerations for network mergers and acquisitions appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

New products of the week 10.10.16

New products of the weekOur roundup of intriguing new products. Read how to submit an entry to Network World's products of the week slideshow.NetScaler VPX 100G Key features: NetScaler VPX 100G is the industry’s first fully-featured, virtualized ADC that delivers 100 Gigabits per second performance on commodity hardware. More info.To read this article in full or to leave a comment, please click here

New products of the week 10.10.16

Get a Fire HD 6 Tablet Reburbished For Just $45 With Code IDG11, Until Wed Only – Deal Alert

If you've had your eye on Amazon's Fire HD 6 Tablet, but haven't pulled the trigger, you may want to consider buying it refurbished before end of day this Wednesday, because if you use our code IDG11 at checkout you'll activate an additional 20% discount on the already discounted price and pick it up for a mere $45. That's a pretty sweet deal considering it's an $85 tablet brand new. A certified refurbished Fire HD from Amazon is refurbished, tested, and certified to look and work like new, so you get it for a fraction of the price without inheriting someone else's problems. To read this article in full or to leave a comment, please click here

The Impact of ICMP Redirects

One of my readers sent me an interesting question after reading my ICMP Redirects blog post:

In Cisco IOS, when a packet is marked by IOS for ICMP redirect to a better gateway, that packet is being punted to the CPU, right?

It depends on the platform, but it’s going to hurt no matter what.