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Category Archives for "Networking"

War Stories: ITIL Process vs Practice

Our irregular War Stories returns, with a story about a network I worked on with strict change control, but high technical debt. What should have been a simple fix became far more pain than it should have been. Lesson learned: next time just leave things alone. I’m sure the ITIL true believers loved their process, but did they realise it stopped people fixing problems?

A classic problem: Duplex mismatch

I spotted a duplex mismatch with one of the services I was responsible for. Throughput was low, and the NIC was showing late collisions. Classic mismatch. Should be an easy enough fix, right? Whoa there son. This is an ITIL shop. No changes without an approved change request!

Logging Changes: An Exercise in Frustration

Change policy at this company was for a lead time for one week for most systems, or two weeks for some ‘important’ systems. Changes had to be submitted and approved before the deadline. There was no reason for the delay. Nothing happened during those two weeks, there was no extra review, you just had to wait, because that was the process.

This company had a Change Management system built on top of a main-frame application. Seriously? Yes, seriously. But it was Continue reading

Italian teen finds two zero-day vulnerabilities in OS X

An Italian teenager has found two zero-day vulnerabilities in Apple’s OS X operating system that could be used to gain remote access to a computer.The finding comes after Apple patched last week a local privilege escalation vulnerability that was used by some miscreants to load questionable programs onto computers.Luca Todesco, 18, posted details of the exploit he developed on GitHub. The exploit uses two bugs to cause a memory corruption in OS X’s kernel, he wrote via email.To read this article in full or to leave a comment, please click here

Software upgrade could be cause of US airline disruption

A computer glitch that disrupted airline traffic in some parts of the U.S. over the weekend was possibly the result of a software upgrade, the Federal Aviation Administration said Sunday.The agency, which had earlier described a problem in its “automation system” as the cause of the disruption, said the problem could be possibly traced to a recent software upgrade at a high-altitude radar facility in Leesburg, Virginia.The upgrade was designed to provide additional tools for controllers, the agency said. While the FAA and its system contractor complete their assessment, the new features have been disabled.The agency said that there was no indication that the disruption was related to any inherent problems with the En Route Automation Modernization system, which it claims has had a greater than 99.99 availability rate since it was completed nationwide earlier this year. ERAM replaced the 40-year-old En Route Host computer and backup system used at 20 FAA Air Route Traffic Control Centers nationwide.To read this article in full or to leave a comment, please click here

Time to Ditch the Definition of SDN

While at a stoplight looking at the random news feeds on Linkedin I ran across a post of a recent blog post by the ONF and the subsequent conversation where my friend Ivan Pepenlnjak commented in. So I threw in my two cents and quickly regretted it because Linkedin has an amazing ability to frustrate me as it updated the ... The post Time to Ditch the Definition of SDN appeared first on NetworkStatic | Brent Salisbury's Blog.

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About the Site Hi! I'm Joel Knight and this is my personal home on the web. I use this site as a platform for expressing my ideas, knowledge, and tools related to Information Technology. The opinions and information expressed on this site — aside from the comments posted by others — are mine and not necessarily those of my employers, past or present. My current employer is Amazon Web Services, Canada.

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AT&T a closer partner of NSA than previously known, Snowden docs show

A fresh analysis of documents disclosed by former U.S. intelligence contractor Edward Snowden shows that AT&T has been a much closer and eager partner for the National Security Agency’s Internet spying activities than was previously known.AT&T has been by far the most critical telecom player in the NSA’s surveillance efforts and its willing participation in mass spying on both foreign and U.S. citizens has apparently been crucial in helping the U.S. agency take advantage of bulk record collection laws, according to a joint report in ProPublica and the New York Times.To read this article in full or to leave a comment, please click here

AT&T a closer partner of NSA than previously known, Snowden docs show

A fresh analysis of documents disclosed by former U.S. intelligence contractor Edward Snowden shows that AT&T has been a much closer and eager partner for the National Security Agency’s Internet spying activities than was previously known.AT&T has been by far the most critical telecom player in the NSA’s surveillance efforts and its willing participation in mass spying on both foreign and U.S. citizens has apparently been crucial in helping the U.S. agency take advantage of bulk record collection laws, according to a joint report in ProPublica and the New York Times.To read this article in full or to leave a comment, please click here

Mozilla tests a true stealth mode for Firefox

Mozilla wants to make private browsing truly private.The company is testing enhancements to private browsing in Firefox designed to block website elements that could be used by third parties to track browsing behavior across sites. Most major browsers, Firefox included, have a “Do Not Track” option, though many companies do not honor it.Mozilla’s experimental tool is designed to block outside parties like ad networks or analytics companies from tracking users through cookies and browser fingerprinting.To read this article in full or to leave a comment, please click here

Dear Internet, Send Us Your Videos

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CloudFlare turns 5 years old this September. It's been an amazing ride since our launch. Before we launched at TechCrunch Disrupt on September 27, 2010, we'd signed up about 1,000 beta customers. It took us nine months to get those first customers. (By comparison, today we typically sign up 1,000 customers every 3 hours.)

Those first beta customers were instrumental. They put up with us when we were had only one data center (in Chicago). They put up with us as we brought traffic online in our next facilities in Ashburn, Virginia and San Jose, California — and had the routing challenges that came along with running a distributed network for the first time. They sent us bug reports, provided us feature requests, and were instrumental to building the foundation that grew into what is CloudFlare today.

Archival Footage

When we launched, we wanted to feature their stories and experience about CloudFlare so we had them submit their stories by video. Here's the video we included as part of our launch presentation.



I'm proud of the fact that more than 80% of those original 1,000 customers are still using CloudFlare five years later.

Send Us Your Stories

As we Continue reading

At what point do white hat hackers cross the ethical line?

In recent months the news of Chris Roberts alleged hacking of an inflight entertainment system and possibly other parts of the Boeing 737 have sparked a wave of controversy. Public opinion was originally on Roberts' side, but the recent publication of the FBI affidavit changed that drastically. According to the affidavit, Roberts admitted to doing a live "pen-test" of a plane network in mid-air.

Whether this is true or not, it raises some valid concerns over the ethical implications of white hat hacking. In the case of Roberts, who, according to the affidavit, was able to steer the airplane off the intended course, the consequences could have been dire. It is not believed that Roberts had any intention of hurting either himself or any of the passengers, but if the affidavit is in fact true, the possibility was real.

To read this article in full or to leave a comment, please click here

FAA: Pilots report record number of unmanned aircraft encounters

The Federal Aviation Administration this week said that a record number of drone sightings reported by airline pilots and others has increased dramatically this year -- from a total of 238 sightings in all of 2014, to more than 650 by August 9.The FAA said pilots of a variety of different types of aircraft – including many large, commercial air carriers – reported spotting 16 unmanned aircraft in June of 2014, and 36 the following month. This year, 138 pilots reported seeing drones at altitudes of up to 10,000 feet during the month of June, and another 137 in July.+More on Network World: Hot stuff: The coolest drones+To read this article in full or to leave a comment, please click here

FAA: Pilots report record number of unmanned aircraft encounters

The Federal Aviation Administration this week said that a record number of drone sightings reported by airline pilots and others has increased dramatically this year -- from a total of 238 sightings in all of 2014, to more than 650 by August 9.The FAA said pilots of a variety of different types of aircraft – including many large, commercial air carriers – reported spotting 16 unmanned aircraft in June of 2014, and 36 the following month. This year, 138 pilots reported seeing drones at altitudes of up to 10,000 feet during the month of June, and another 137 in July.+More on Network World: Hot stuff: The coolest drones+To read this article in full or to leave a comment, please click here

Show 250 – How To Document A Network

A favorite topic among network engineers, documentation is a source of both wonder and horror. Network documentation is difficult to get right. How much detail is enough? How old is that diagram, really? Can't this be automated? Wait, the automated generator spit out *that*? In this show, the Packet Pushers along with former guest Dominik discuss their documentation experiences, good and bad. What have we gotten right? What have we gotten wrong? What's been worth the trouble? What was a waste of time? What did we wish we'd documented before we really needed it?

The post Show 250 – How To Document A Network appeared first on Packet Pushers.

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