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Category Archives for "Networking"

A quick look at QUIC

Quick UDP Internet Connection (QUIC) is a network protocol initially developed and deployed by Google, and now being standardized in the Internet Engineering Task Force. In this article we’ll take a quick tour of QUIC, looking at what goals influenced its design, and what implications QUIC might have on the overall architecture of the Internet Protocol.

Replacement Strips for Screen Privacy Filter

I use a Privacy Filter on my laptop screen when traveling. I’m doing a bit of time on planes these days, and it makes a big difference. Most of my code is Open Source, but other content is proprietary. High chance of competitors being on the same plane as me, so better to make it harder for others to see.

The only problem with these screens is that if you frequently take it off like I do, the adhesive strips collect dust, and stop sticking after a while. Recently someone asked me how to get them replaced.

3M does not sell replacement strips…but they do something even better: they give them away for free. Pretty cool ah?

Just go here, fill in the details, and they’ll send you some more. How good is that?

Replacement Strips for Screen Privacy Filter

I use a Privacy Filter on my laptop screen when traveling. I’m doing a bit of time on planes these days, and it makes a big difference. Most of my code is Open Source, but other content is proprietary. High chance of competitors being on the same plane as me, so better to make it harder for others to see.

The only problem with these screens is that if you frequently take it off like I do, the adhesive strips collect dust, and stop sticking after a while. Recently someone asked me how to get them replaced.

3M does not sell replacement strips…but they do something even better: they give them away for free. Pretty cool ah?

Just go here, fill in the details, and they’ll send you some more. How good is that?

Replacement Strips for Screen Privacy Filter

I use a Privacy Filter on my laptop screen when traveling. I’m doing a bit of time on planes these days, and it makes a big difference. Most of my code is Open Source, but other content is proprietary. High chance of competitors being on the same plane as me, so better to make it harder for others to see.

The only problem with these screens is that if you frequently take it off like I do, the adhesive strips collect dust, and stop sticking after a while. Recently someone asked me how to get them replaced.

3M does not sell replacement strips…but they do something even better: they give them away for free. Pretty cool ah?

Just go here, fill in the details, and they’ll send you some more. How good is that?

Full Stack Journey 029: The Ballerina Programming Language With Anjana Fernando

Today's Full Stack Journey podcast dances with Ballerina, a cloud-native programming language introduced by WSO2. My guest is Anjana Fernando, who has been involved in Ballerina since its inception. We discuss use cases and compare Ballerina to languages such as Java and Golang.

The post Full Stack Journey 029: The Ballerina Programming Language With Anjana Fernando appeared first on Packet Pushers.

Weekend Reads 030119

The tradeoff is that users’ credentials are then centrally stored and managed, typically protected by a single master password to unlock a password manager data store. With the rising popularity of password manager use it is safe to assume that adversarial activity will target the growing user base of these password managers. Table 1, below, outlines the number of individual users and business entities for each of the password managers we examine in this paper.

Imagine that you’re about to give a presentation in front of your entire organization. If you have ever been anxious in a situation where the stakes are high, you’ve probably received well-meaning advice: Calm down. Take deep breaths. Think positively, and you will nail this. —Barry Brownstein

“Photographs furnish evidence,” wrote Susan Sontag in On Photography. “A photograph passes for incontrovertible proof that a given thing happened.” Sontag went on to write of how photographs can misrepresent situations. But do they even have to show real objects? —Ben Sixsmith

Scammers tend to be skilled at finding the most vulnerable individuals and turning them into victims. Case in point: Researchers at Proofpoint have been tracking campaigns that prey on those looking for work. The payoff Continue reading

Connecting RasPBX via SIP Trunk

The previous tutorial has covered RasPBX installation on Raspberry Pi 3 board. At the end of the tutorial we have tested local calls between chan_sip extensions 1010 and 1020 that are registered to RasPBX. This time we will go further and connect RasPBX with another FreePBX VOIP system via PJSIP trunk. The FreePBX is running on VirtualBox and it is in version 14 with Asterisk 13. As the last step of the tutorial, we will test VOIP calls  between RasPBX with FreePBX that are interconnected by PJSIP trunk.

As we have mentioned, a complete RasPBX and Zoiper softphones installation and configuration is covered in a previous tutorial (except the SIP trunk).  Also, the tutorial does not cover installation of FreePBX on VirtualBox VM. So far, our inventory contains RasPBX and FreePBX with the following components.

RasPBX - Asterisk on Raspberry PI board:
- Asterisk 13.22.0
- FreeBPX 14.0.3.13
- Zoiper softphone on Ubuntu 18.0.4, IP 172.17.100.2/16, ext. 1010
- Zoiper softphone on Android 5.1, IP 172.17.100.5/16, ext. 1020

FreePBX - Installed  on VirtualBox VM
- Asterisk 13.19.1
- FreeBPX 14.0.3.13
Continue reading

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