BestTechVideos: Tag dns Videos

DomainKeys Identified Mail Technology

scoundrel — Sat, 08 Dec 2007 21:22:41 GMT

Google Tech Talks
December, 5 2007

DomainKeys Identified Mail (DKIM) is an emerging IETF standard (RFC
4871) to authenticate sending domains in SMTP mail. It is designed
to be scalable, extensible, back-compatible, and adoptable without
any flag days.

This talk will cover the background of sender domain authentication
in general and DKIM in particular, details of how DKIM works, and
other issues that DKIM brings up, notably sender accreditation and
reputation and receiver policy. Sendmail's Open Source
implementation of DKIM will also be discussed.

Speaker: Eric Allman
As Sendmail's Chief Science Officer and co-founder, Eric Allman leads the company's technology strategy and direction. Allman authored sendmail, the world's first Internet Mail program, in 1981 while at the University of California at Berkeley. He continues to spearhead sendmail.org, the global team of volunteers that maintain and support the sendmail Open Source platform.

At the forefront of industry-leading trends and technology, Allman is currently a leader of the movement to adopt an international standard for Sender Domain Authentication. Allman, backed by a cross-industry group of companies (Cisco, Yahoo, PGP, et. al.), co-authored the draft specification for DomainKeys Identified Mail (DKIM), and submitted it to the Internet Engineering Task Force (IETF).

Before joining Sendmail, Allman served as CTO for Sift, Inc., which is now part of 24/7 Media, Inc. He was lead developer and provided a large-scale research software infrastructure on the Mammoth project at U.C. Berkeley. Allman has contributed as a senior developer at the International Computer Science Institute to neural network systems design. Allman was also Chief Programmer on the INGRES Relational Database Management System and an early contributor to Berkeley UNIX, authoring syslog, tset, the troff -me macros, and trek in addition to sendmail. For several years, he has co-authored the "C Advisor" column for UNIX Review magazine. He was formerly a member of the Board of Directors of USENIX Association and is currently a member of the ACM Queue Editorial Review Board.

Allman holds an Masters of Science degree in Computer Science from the University of California at Berkeley.

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Drive-By Pharming and Other WebApp Bummers

scoundrel — Thu, 12 Jul 2007 16:25:46 GMT

Google Tech Talks
June 28, 2007

ABSTRACT

Inexpensive broadband routers are a popular way for people to create an internal, and sometimes wireless, network in their homes. By purchasing such a router and plugging it in, they can have a network set up in seconds. Unfortunately, by visiting a malicious web page, a person can inadvertently open up his router for attack; settings on the router can be changed, including the DNS servers used by the members of this small, quickly erected internal network. This talk examines this attack in depth, and will lead to discussion about similar dangers that emerge when commonly used technologies are abused.

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LinuxConf.Au: Linux-HA (heartbeat) release 2 tutorial

scoundrel — Thu, 22 Mar 2007 00:17:55 GMT

Audience: System Administrators and IT architects who architect, evaluate, install, or manage critical computing systems. It is suggested that participants have basic familiarity with LSB style startup scripts, shell scripting and XML. Familiarity with high availability concepts is not assumed. This tutorial provides participants with both basic theory of high-availability systems and practical knowledge of how to plan for and install and configure highly-available systems using Linux-HA.

Description: The Linux-HA project is the oldest and most powerful open source high-availability (HA) package available - comparing favorably to well-known commercial HA packages. Although the project is called Linux-HA (or "heartbeat"), it runs on a variety of POSIX-like systems including FreeBSD Solaris, and OS/X.

Linux-HA provides highly available services on clusters from one to more than 16 nodes with no single point of failure. These services and the servers they run on are monitored. If a service should fail to operate correctly, or a server should fail, the affected services will be quickly restarted or migrated to another server, dramatically improving service availability.

Linux-HA supports for rules for expressing dependencies between services, and powerful rules for locating services in the cluster. Because these services are derived from init service scripts, they are familiar to system administrators and easy to configure and manage. This tutorial will cover planning, installing, and configuring Linux-HA clusters. Topics covered will include:

General HA principles
Installation of the software
Overview of Linux-HA configuration
Overview of commonly used resource agents
Managing services supplied with init(8) scripts
Sample Linux-HA configurations for Apache, NFS, DHCP, DNS and Samba
Writing and testing resource agents conforming to the OCF specification
Creating detailed resource dependencies
Creating co-location constraints
Writing resource location constraints
Causing failovers on user-defined conditions

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LinuxConf.Au: Linux: Anycast DNS, Failover DHCP, Peering NTP

scoundrel — Fri, 09 Mar 2007 01:39:54 GMT

At the end of 2005, UofA put a plan in place to upgrade its DNS, DHCP and NTP infrastructure. Hardware was spec'd and purchased and rough plans were put in place for the deployment. In January 2006 I started a contract at UofA to roll out these services.

My first month focused around research on deploying these services with maximum availablity being the driving force behind the upgrade. I was refered to a paper entitled "Three Practical Ways to Improve Your Netowrk" by Kevin Miller from the Carnegie Mello University; http://www.net.cmu.edu/pres/lisa03/ This paper, along with the slides is a great place to start understanding about Anycast and how to use it in mind to deploy redundant DNS services. We wanted to tie in the upgrades with our internal IP, DNS and DHCP management tool, this stores all the information in an SQL database and allows easy configuration deployment.

Thus began the plan for Anycast DNS, Failover DHCP & Peering NTP, running on Redhat AS 4 on our HP servers distributed across serveral campuses.

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ITidiots Podcast: Installing Windows Domain Controller

scoundrel — Fri, 26 Jan 2007 11:24:40 GMT

Podcast authors start to build their own windows network, beginning with Windows 2003 Server based Domain Controller. Podcast contains really detailed explanations of entire DC creation process.

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Zero Configuration networking with Bonjour

scoundrel — Fri, 17 Nov 2006 12:25:01 GMT

Google TechTalks November 2, 2005 Dr. Stuart Cheshire, Apple Computer http://www.stuartcheshire.org/ ABSTRACT The desirability of making IP networking easy to use has been obvious for many years, but achieving that goal has proved elusive. One day, Stuart Cheshire got tired of fellow Stanford Computer Science PhD students wanting to print from his Mac (via AppleTalk) because they couldn't work out how to configure their Linux /etc/printcap files to access the network printer they wanted to use via IP, and he decided it was time someone did something about it. Thus began a long saga, beginning with the formation of the IETF "Zero Configuration Networking" working group, and ending where we are today, with widespread adoption of Stuart Cheshire's Multicast DNS and DNS Service Discovery technology, or "Bonjour", as Apple likes to call it. Today just about every network printer from just about every printer vendor supports Bonjour, and ships with it enabled by default.

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