8 posts tagged “technical”
This is an episode (45) of Systm from Revision3 that shows how to boost your WiFi router signal with a very inexpensive and "infamous Ez-12 Parabolic
Reflector".
Before starting work with the services previously described (OpenDNS, DynDns) it is necessary to define what type of IP configuration will be used.
ISP’s can supply two types of IP configuration: dynamic IP and/or fixed IP.
Fixed IP implies that user will have always the same IP address assigned to it while dynamic IP implies that user might have a different set of IP’s assigned to it based on user demand and IP expiration.
Fixed IP’s are more suitable, I mean, easier to configure, for building the IAPC but dynamic IP can also be consider. In fact most of the ISP’s nowadays are using dynamic IP type configuration.
Overview:
What IAPC implementation does is to change from the ISP’s supplied DNS IP server to the OpenDNS IP server. This causes every user request to access Web content to be routed to the OpenDNS server which performs a Web-content filtering procedure as well as others features.
To perform this operation, OpenDNS needs to know who is requesting DNS information. In other words, OpenDNS needs to know user IP address to be able to apply pre-defined Web-content filtering.
Fixed IP:If you are configured as Fixed IP, OpenDNS configuration is pretty straight forward and is described in 3 steps:
Step 1: Change DNS on user
system;
Step 2: Create an OpenDNS
user account;
Step 3: Customize.
Those steps can be followed here. There is a very clear explanation (a lot of pictures) showing how to configure every parameter in user system as well as in OpenDNS.
Dynamic IP configuration will be present on IAPC Part II.
Guide to setup an efficient and secure Internet Access Parental Control.
Basic idea is to restrict Internet Access to sites that might contain offensive or inappropriate content such as pornography, racism, cracks and so forth.
Classification of the abusive content is based on the moderator decision as well as automatic fashion.
Below is a list of the services that will be put together to accomplish the Internet Access Parental Control:
OpenDNS - world's largest, fastest-growing DNS service provider. Millions of people worldwide (and growing) trust us to handle their DNS and Web-content filtering needs.
DynDNS - Provides services that help user and content providers keep connected.
As you may notice, this solution is based on the DNS (Domain Name Service) - The Internet system that translates human-understandable hostnames (like www.dyndns.com) into computer-understandable IP addresses (like 63.208.196.66) and back again.
More in the next days.
Wireshark is a must have tool to analyze network protocols.
From Wireshark News: I'm proud to announce the release of Wireshark 1.0. This is the
culmination of nearly ten years of hard work by a team of brilliant and talented
developers. It is an honor to be able to work with these people.
On behalf of the development team, I would like to thank Wireshark's user community for all of your enthusiasm and support over the years. Wireshark development will continue, and we have lots of great features to offer in the coming years.
Silverlight competes with Adobe Flash (previously called Shockwave Flash and Macromedia Flash).
Below you can find links to Silverlight based web sites. Note: If you have never opened any Silverlight based web site, for first time it will required that you install it. (~ 5MB)
Hard Rock Memorabilia - World's greatest music memorabilia collection
Face Out - Rich Internet Sales Dashboard
This is a very clear and simple article about the difference between Streaming vs. Progressive Download of Videos. It's a little bit old (2003) but the concept is still valid.
And talking about streaming video, Hulu has a demo HD Gallery 720p (1280 x 720). This is not the so called full HD (1080p) but it bring us a very good example of HD video. (be patient if you are not using a fast broadband connection).
*** These videos are only available if you got an US IP address. Try a free proxy server if you only have access to the internet via a local ISP ***
This book is a must have for those who are, at any level, involved with Internet (actually everybody nowadays).
A book to read from cover to cover !
Good reading !
These are technical animated articles presented by Laura Chappell. She is a Sr. Protocol/Security Analyst and founder of Wireshark University.
"Wireshark is a free packet sniffer computer application. It is used for network troubleshooting, analysis, software and communication protocol development, and education. In June 2006 the project was renamed from Ethereal due to trademark issues". from Wikipedia
