Postpostmodern » A Smarter MAMP
http://postpostmodern.com/instructional/a-smarter-mamp/
Landon Fuller
http://landonf.bikemonkey.org/code/security/DNS_Dead_Drop.20060128201048.26517.luxo.html

The DNS Dead Drop Storing Arbitrary Messages in Remote DNS Caches A few months ago, I read Dan Kaminsky's presentation slides, Attacking Distributed Systems: The DNS Case Study. In the presentation, Kaminsky documents a method of implementing single bit data transfer with nothing more than: * A recursive, caching name server * A wildcard zone After a particularly stressful week, I decided I needed to work on something fun -- an implementation of a DNS-based dead drop messaging system, utilizing Kaminsky's ideas.

DNS Dropzone Storing Arbitrary Messages in Remote DNS Caches A few months ago, I read Dan Kaminsky's presentation slides, Attacking Distributed Systems: The DNS Case Study. In the presentation, Kaminsky documents a method of implementing single bit data transfer with nothing more than:

DNS Dead Drop

The DNS Dead Drop

Using tunneling over DNS or ICMP

java applet to check for various nefarious things isps might do, like transparent proxies, dns interception, bittorrent blocking (though not throttling)

The Netalyzr tests your Internet connection for signs of trouble. Understand your connectivity through a detailed report of any performance and security issues.

Good DNS tutorial for students or anyone wanting to understand DNS basics.

Comparar estadisticas de Hosting

Dyn

Includes details on web host, email, dns, registrar

(part 2)

In this article we'll take a look at the behavior of the DNS and walk through some experiments you can run to gather valuable data about your users' network performance.

The Domain Name System (DNS) is part of the "dark matter" of the internet. It's hard to observe the DNS directly yet it exerts an obscure, pervasive influence without which everything would fly apart. Because it's so difficult to probe people tend to take it for granted, which I think is a mistake. DNS problems can hurt the speed and reliability of your applications without you even noticing. In this article we'll take a look at the behavior of the DNS and walk through some experiments you can run to gather valuable data about your users' network performance.

s an obscure, pervasive influence without which everything would fly apart. Because it's so difficult to probe people tend to take it for granted, which I think is a mistake. DNS problems can hurt the speed and reliability of your applications without you even noticing. In this article we'll take a look at the behavior of the DNS and walk through some experiments you can run to gather valuable data about your users' network performance.

The Domain Name System (DNS) is part of the "dark matter" of the internet. It's hard to observe the DNS directly yet it exerts an obscure, pervasive influence without which everything would fly apart.

This is a unique YDN blog post.

8.8.8.8 这种 ip 完全没有记的必要，加到书签里仅仅是为了纪念这个 dns 诞生的日子

"a free, global Domain Name System (DNS) resolution service"

When you type www.wikipedia.org into your browser's address bar, you expect nothing less than to be taken to Wikipedia. Chances are you're not giving much thought to the work being done in the background by the Domain Name System, or DNS.

Today, as part of our ongoing effort to make the web faster, we're launching our own public DNS resolver called Google Public DNS, and we invite you to try it out.

Today, as part of our efforts to make the web faster, we are announcing Google Public DNS, a new experimental public DNS resolver.

I'm in two minds about whether to use them or not. But it's good that there's a DNS provider I can fall back on if my ISP's DNS goes tits up that isn't sodding OpenDNS.

Google何でもやるなー. すごい.

Namebench hunts down the fastest DNS servers available for your computer to use. namebench runs a fair and thorough benchmark using your web browser history, tcpdump output, or standardized datasets in order to provide an individualized recommendation.

Are you a power-user with 5 minutes to spare? Do you want a faster internet experience? Try out namebench. It hunts down the fastest DNS servers available for your computer to use. namebench runs a fair and thorough benchmark using your web browser history, tcpdump output, or standardized datasets in order to provide an individualized recommendation. namebench is completely free and does not modify your system in any way. This project began as a 20% project at Google. namebench runs on Mac OS X, Windows, and UNIX, and is available with a graphical user interface as well as a command-line interface.

"Some more Googling eventually found RFC3484, which relates to DNS resolution in IPV6, but part of which is back-ported to IPV4. Vista is apparently the first major client OS to implement it, specifically section 6 rule 9. That specifies that the selection of an address from multiple A records is no longer random, but instead the destination address which shares the most prefix bits with the source address is selected, presumably on the basis that it's in some sense "closer" in the network. / Now, this may well make sense in IPV6 (I don't know enough about it to comment), but it's an insane algorithm to use in IPV4. First, the Internet is not laid out that way. As any comic artist can tell you, Europe does have a nice block from 80.0.0.0 to 91.255.255.255, but it also has chunks from 193-195 and 212-213, plus there's lots of geographically random stuff between 128 and 172. / But second, and more important, very few Windows client PCs actually have public IP addresses"

Braindamage in Vista DNS resolver. Microsoft breaks the internet again, by implementing RFC of its own creation.

A unique, comprehensive, accurate & free Windows (and Linux/Wine) utility to determine the exact performance of local and remote DNS nameservers . . .

A unique, comprehensive, accurate & free Windows (and Linux/Wine) utility to determine the exact performance of local and remote DNS nameservers

各種ソーシャルメディアでどれぐらい有名かを表示。 どんな技術を使って作られているかを表示。

「The Best Online Tools To Help You Know Everything About Web Sites」なる記事があったのでご紹介。「あのサイトについてもっと知りたい！」というときのためのツールいろいろですね。

どんな技術を使って構築されているか、等

ドメイン、サーバー、SNSでの知名度、どんな技術を使ってるか、Pingして応答を見る。など。

As a software developer, you certainly have a high-level picture of how web apps work and what kinds of technologies are involved: the browser, HTTP, HTML, web server, request handlers, and so on. In this article, we will take a deeper look at the sequence of events that take place when you visit a URL.

Find The Perfect Domain Name - DomainGroovy http://ff.im/-iDbyC – Anton Dyachuk (ptzn) http://twitter.com/ptzn/statuses/11727446366

http://news.ycombinator.com/item?id=1244824

DNS is a great example of a service that couldn't possibly work on paper, but performs spectacularly in practice, even with a hodge-podge of implementations all over the Internet.

DNS is a great example of a service that couldn't possibly work on paper, but performs spectacularly in practice, even with a hodge-podge of implementations all over the Internet. First, the authoritative DNS servers responds with a Time To Live (TTL) timestamp for every record (which you should keep fairly low in a virtual deployment environment), then the upstream DNS servers cache that same data, albeit usually with different policies (determined by the ISP). And finally, your router, OS, and the browser all have their own and independent DNS caches. (Firefox 2/3 caches all DNS records for a 1 minute, IE 5/6/7 for 15 minutes). Talk about a mess!

Good tips on using DNS in the cloud, and in particular using a staging environment that is switched over (via DNS) to a production environment.

Using Amazon EC2 Metadata as a Simple DNS

I use the amazon metadata for creating /etc/hosts and do this on a cron schedule. This does everything I need. Instead of fancy DynDNS tricks or having to run and manage an internal DNS server I just have a ruby script that looks at the metadata ec2 to build /etc/hosts. It's easy. To set it up yourself and try it all you need are 3 easy steps. Step 1- Start each of your instances with unique named key that matches what you want their internal hostname to be. Such as "onion" or "potato" or whatever you want to call them. Step 2- Make sure you have ruby, rubygems and amazon-ec2 (rubygem) installed. Then create a ruby script in /usr/local/sbin/hosts that has the following:

"I use the amazon metadata for creating /etc/hosts and do this on a cron schedule. This does everything I need. Instead of fancy DynDNS tricks or having to run and manage an internal DNS server I just have a ruby script that looks at the metadata ec2 to build /etc/hosts."

The single easiest way to keep your kids safe online — and away from adult websites — on your home Internet for free. No software to install.

filtro de webs por dns

Filtro Familiar

free to block adult web content and phishing sites

filtrado de contenidos en dns

The single easiest way to keep your kids safe online — and away from adult websites — on your home Internet for free. No software to install.

filtro de webs por dns

Filtro Familiar

free to block adult web content and phishing sites

わかりやすそう！