Schedule

Schedule

Saturday, November 29

1417287600 The Tech Guy

Sunday, November 30

1417374000 The Tech Guy
1417388400 This Week in Tech

Monday, December 1

1417456800 Tech News Today
1417460400 Triangulation
1417465800 iPad Today
1417478400 Tech News 2Night

Tuesday, December 2

1417543200 Tech News Today
1417546800 MacBreak Weekly
1417554000 Security Now
1417561200 Before You Buy
1417564800 Tech News 2Night
1417568400 All About Android
1417577400 Padre's Corner

Wednesday, December 3

1417624200 FLOSS Weekly
1417629600 Tech News Today
1417633200 Windows Weekly
1417640400 This Week in Google
1417651200 Tech News 2Night
1417653000 Android App Arena
1417658400 Ham Nation

Thursday, December 4

1417716000 Tech News Today
1417719600 Know How...
1417723200 Marketing Mavericks
1417728600 Coding 101
1417732200 Home Theater Geeks
1417737600 Tech News 2Night
1417739400 The Giz Wiz

Friday, December 5

1417802400 Tech News Today
1417806000 This Week in Law
1417824000 Tech News 2Night

Saturday, December 6

1417892400 The Tech Guy

Sunday, December 7

1417978800 The Tech Guy
1417993200 This Week in Tech

Monday, December 8

1418061600 Tech News Today
1418065200 Triangulation
1418070600 iPad Today
1418083200 Tech News 2Night

Most Recent Episodes

Android App Arena
Episode #23: Apps For Wear November 26th, 2014

RETRY, Wear Mini Launcher, and Aeris Wear Weather.

Tech News 2Night
Episode #224: GoPro Drones November 26th, 2014

Twitter Tracks Your Apps

iFive for the iPhone

How to tag photos in iOS

This Week in Google
Episode #277: FU EU November 26th, 2014

Europe wants to expand right to be forgotten.

Windows Weekly

Windows 10 build 9879, HP Stream, and Black Friday deals.

FLOSS Weekly
Episode #317: Pentaho November 26th, 2014

Pentaho a big data integration and business analytics software.

Tech News Today

EU wants to extend 'Right to be Forgotten' worldwide.

Before You Buy

Nexus 6 Review

All About Android

Nexus Player, Lollipop love/hate, and patent wars.

Security Now
Episode #483: Let's Encrypt November 25th, 2014

Steve Gibson looks in depth at new Certificate Authority "Let's Encrypt".

Know How... 101

BloomSky, Port Forwarding, and Immersed Computing

July 10 2014

Bloomsky is a weather reporting network, how to port forward, and fully immersed computing.

Bloomsky Weather Reporting Network, a crowd-source, cloud-based weather app that uses inexpensive hardware to collect thousands or TENS of thousands of data points from a particular region to build a more accurate weather map.

Ports, DMZ, and Forwarding

The way Internet works is that is uses IP address and protocols to communicate.

* The Internet uses many protocols, but the ones you most often use are TCP and UDP.

-- We're not going to go into the difference between TCP and UDP except to say:
** TCP = "Transmission Control Protocol" : Creates a connection between two devices on a network and stays connected for the duration of the session. This enables both devices to verify that all information sent has been properly received. When the communication between the two devices is done, the connection is released.

** UDP = "User Datagram Protocol" : The device sending the information packages it into a nice, neat package and sends it into the network with the proper destination header. It does not make a connection to the receiving device, nor does it verify that the package arrived safely.

** TCP is more reliable, because the connection between the two devices means you can ensure that ALL data is received properly, but UDP has much lower overhead.

But that's not important... what IS important is that EVERY IP ADDRESS can use either TCP or UDP
** AND each of those protocols has 65,635 available ports on which to received data.

** In other words... EVERY address that any device has has more than 130k possible ports to use.
-- And that's just counting TCP and UDP (There are other protocols)

** Each of those ports can be forwarded to a particular device on your network... which means you could theoretically access EVERY device you have on your home network without having to purchase a service or pay a subscription.

SO LET'S UNLOCK YOUR PORT POWER!!!!

There are 65,535 available ports (Unsigned 16 bit Integer 2^16 = 65,536 - 1 [Because we don't use 0])
* The first 1024 ports are reserved for common applications
-- ftp uses 20, 21
-- ssh uses 22
-- SSL uses 443
-- HTTP uses 80

When we type an address into a browser, it ASSUMES that we want port 80 because that's where HTTP services can normally be found.
* So http://192.168.1.1 is actually http://192.168.1.1:80
* That means we can tell our browser (or any application) to use a DIFFERENT port on the same ip address
-- For example... we can tell it to go to http://192.168.1.1:8080 -- and it will try to get a HTTP response from port 8080 on 192.168.1.1

Examples of application needing port forwarding
-- FreeNAS Plex Server
-- IP Cameras
-- Minecraft Server
-- Pogoplug

XBOX Live Requires the Following Ports:
88 (UDP)
3074 (UDP and TCP)
53 (UDP and TCP)
80 (TCP)
500 (UDP)
3544 (UDP)
4500 (UDP)

Minecraft
25565 (TCP/UDP)

Immersed Computing

The theory!

* Most liquid cooling methods have used some sort of water block on top of the hot components, with flexible tubing that pumps fluid though the waterblocks, out to a radiator.
* The problem with liquid cooling is that it's messy, complicated, can cause shorts, and is otherwise a PITA to maintain
* You also can't put waterblocks on ALL the pieces of a computer that are going to generate heat, which means that you're still going to have to put fans in the case, which negate the purpose of installing a water cooling system in the first place.
** SOOOO... Instead of pumping fluid through waterblocks, and leaving plumes of heat all throughout the computer... what about simple immersing the entire computer into fluid?

We can do this if we use a Dialectric Fluid:

-- This means that electric charges will NOT flow through the liquid as they do in water and any other conductor.
-- Because it does not conduct electricity, electronic devices can be completely immersed without fear of short-circuiting the traces or the ICs themselves.

Flourinert

* It's Dielectric, health neutral and is DESIGNED to directly cool electronics
* It's VERY good a conducting heat. It allows for heat to be conducted from components, but it does't have a high heat-capacity itself, meaning that it will readily give that heat up to a radiative surface.
* However... It's Expensive: One gallon of NEW Flourinert can cost you somewhere between $500-$1000

Let's talk about the Abyss:

There are a few places that will sell RECYCLED Flourinert at a discount rate.
* TMC Contract Distillation will sell it at ~$300/gallon

Mineral Oil
* Mineral oil is a by-product of petroleum distilliation process
* It's transparnet, colorless, of relatively low viscosity and is harmless to the human body. (It can be used as a mild laxative)
* But most importantly --- Mineral oil is dielectric:
** AND Mineral Oil is Cheap! -- It's about $25/gallon

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