This document provides an overview of Linux and DNS server administration. It discusses what Linux is, where it is used, advantages of using Linux like low cost and security. It also explains what a DNS server is, components of DNS like domains, hostname, zones and how to configure a DNS server in Linux. Hackers prefer Linux due to its availability, customizability and prevalence on servers. Using public DNS services like Google DNS can help speed up internet access. Linux provides a flexible, secure and low-cost operating system for applications including web servers.
A complete Coverage of DNS and its features. This ppt deals with well balanced practical and theoretical aspects of DNS. The best ppt for a novice learner.
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. This presentation deals with basics of Linux as an OS, Linux commands, vi editor, Shell features like redirection, pipes and shell scripting
A complete Coverage of DNS and its features. This ppt deals with well balanced practical and theoretical aspects of DNS. The best ppt for a novice learner.
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. This presentation deals with basics of Linux as an OS, Linux commands, vi editor, Shell features like redirection, pipes and shell scripting
Learn about the essentials of the Domain Name System (DNS), including name resolution, different record types, roots, zones, authority and recursion.
See the full webinar and the rest of the series at https://www.thousandeyes.com/resources/intro-to-dns-webinar
I have tried my best to describe Samba Server through this PPT. I hope you guys will love this and this ppt will be helpful for you all.
Thanks,
Veeral Arora
Computers are connected in a network to exchange information or resources with each other. Two or more computer are connected through network media called computer media.
There are a number of network devices or media that are involved to form computer network.
Computer loaded with Linux Operation System can also be a part of network whether it is a small or large network by multitasking and multi user natures.
Maintaining of system and network up and running is a task of System / Network Administrator’s job. In this article we are going to review frequently used network configuration and troubleshoot commands in Linux.
Overview of the Domain Name System (DNS).
In the early days of the Internet, hosts had a fixed IP address.
Reaching a host required to know its numeric IP address.
With the growing number of hosts this scheme became quickly awkward and difficult to use.
DNS was introduced to give hosts human readable names that would be translated into a numeric IP addresses on the fly when a requesting host tried to reach another host.
To facilitate a distributed administration of the domain names, a hierarchic scheme was introduced where responsibility to manage domain names is delegated to organizations which can further delegate management of sub-domains.
Due to its importance in the operation of the Internet, domain name servers are usually operated redundantly. The databases of both servers are periodically synchronized.
Learn about the essentials of the Domain Name System (DNS), including name resolution, different record types, roots, zones, authority and recursion.
See the full webinar and the rest of the series at https://www.thousandeyes.com/resources/intro-to-dns-webinar
I have tried my best to describe Samba Server through this PPT. I hope you guys will love this and this ppt will be helpful for you all.
Thanks,
Veeral Arora
Computers are connected in a network to exchange information or resources with each other. Two or more computer are connected through network media called computer media.
There are a number of network devices or media that are involved to form computer network.
Computer loaded with Linux Operation System can also be a part of network whether it is a small or large network by multitasking and multi user natures.
Maintaining of system and network up and running is a task of System / Network Administrator’s job. In this article we are going to review frequently used network configuration and troubleshoot commands in Linux.
Overview of the Domain Name System (DNS).
In the early days of the Internet, hosts had a fixed IP address.
Reaching a host required to know its numeric IP address.
With the growing number of hosts this scheme became quickly awkward and difficult to use.
DNS was introduced to give hosts human readable names that would be translated into a numeric IP addresses on the fly when a requesting host tried to reach another host.
To facilitate a distributed administration of the domain names, a hierarchic scheme was introduced where responsibility to manage domain names is delegated to organizations which can further delegate management of sub-domains.
Due to its importance in the operation of the Internet, domain name servers are usually operated redundantly. The databases of both servers are periodically synchronized.
Talk by Jonathan Oxer at Linux Users Victoria in April 2007 about how DNS works. Covers authoritative and recursive DNS, delegation, and attack vectors including cache poisoning and DNS forgery. More information at http://jon.oxer.com.au/talks/id/66
LEARNING TOPIC:
DNS
Two types of lookup in DNS
Three types of zone in DNS the port no of DNS
The port number of DNS
Nslookup
Active Directory And Domain
LDAP
Active Directory
Group Policy
Software publishing and assigning
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At the end of the lesson, the students will be able to;
A. know the system administrator – DNS, and active directory and domain
B. appreciate the role of system administration in terms of DNS, and Active directory And Domain
C. give meaning of each terminologies in system administration in terms of DNS, and Active directory And Domain
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
2. Linux
Factors of Linux Implementations
What is Linux
Where is Linux Used
Why Use Linux
Linux vsWindows
Web Server Administration (DNS Server)
UsefulTopics
Why Hackers prefers Linux
Speedup Internet with Google Public DNS
Conclusion
3. Why accept lower levels of security and reliability
when I can provide higher levels of service to my
customers?
I don’t want to be locked into any single operating
system, platform, or solution technology. It’s
about choices.
Why pay more when you can get the same or
better function for less with more flexible
licensing?
4. Linux is a generic term referring to Unix-like
graphical user interface (GUI) based
computer operating systems.
A famous open source project
It is Multi-user, Multitasking, Multiprocessor
Free to use, distribute, modify under a
compatible licence
A combination of many projects
5. People improve it, people adapt it, people fix
bugs. And this can happen at a speed that,
compared to conventional software
development.
Open source software
Continue..
6. As there is a limited access of user to basic
files and folders, in Linux network it provide
security to user’s privacy.Without disclosing
the secured data Linux acts as a efficient
server.
Linux Provide Security
Continue..
7. Linux is "virus-free", there are no viruses for
Linux in the world
Linux is aVirus Free
Continue..
8. No!
There doesn’t exist any Operating System on this earth
that is virus free. However Linux is known to have least
number ofViruses, till date, yes even less than UNIX OS.
Linux has had about 60-100 viruses listed till date. None of
them actively spreading nowadays. A rough estimate of
UNIX viruses is between 85 -120 viruses reported till date.
Linux is aVirus Free
Continue..
9. 75% of respondents were already using Linux
and another 14% were evaluating it
43% of all web sites use Linux servers running
the ApacheWeb server
11. Financial Difference
Technical Difference
Linux upgrades faster than Windows
Cost
Linux Windows
Online downloads Free Not available
Retail price, CD $ 50 $ 300
13. Networking in Linux
Linux applications for servers
What is Domain
What is Host name
Understanding DNS
Key components of DNS
Install and configure DNS in Linux
14. Linux is a powerful networking operating system
Ability to work as a client, server, or network device
Proxies, firewalls, routers, bridges, etc.
As with most things, GUI tools available
Similar toTCP/IP configuration in Windows
Default firewall software is iptables or ipchains
15. All common Internet services available
Mail, Web, DNS, etc.
Easy administration using web based interface
No cost to setup a server.
As easy as download a CD and install.
Lower maintenance. Keeps running for years.
16. Domain Names are the unique name that identifies
an entity.
Domain Names always have 2 or more parts
separated by the dots.
Types
Top level domain
New –Top level domain
17. .edu, .gov, .com, .net, .org, …
Countries each have a top level domain (2 letter
domain name).
18. .biz - businesses
.info - anyone can register
.name - must register first and last name
.pro - for professionals only
must provide proof
.aero, .museum, .coop are controlled by
organizations
19. A hostname is any name placed to the left of
your domain name which resolves to an IP address.
www.myinnos.in
20. The Domain name system is usually used to
translate a host name into an IP address.
Domain names comprise a hierarchy so that names
are unique, yet easy to remember.
21.
22. On your PC, theTCP/IP configuration contains the
address(es) of your DNS server(s)
Whenever you use a URL, whether in a browser, or a
utility such as ping, DNS servers are used
24. The root level domain is "."
Top-level domains include .com, .org etc.,
Second-level domains are often owned by companies
and individuals
myinnos.in
A subdomain is a further division of a second-level
domain
For pawanismmedia.in
There is admin.myinnos.in
25. A zone is a part of the domain namespace
A domain myinnos.in, the domain name represents
a single zone
For large organizations, subdomains can be divided
into separately maintained zones
Each zone typically has a separate DNS
26. Zones must be contiguous
admin.myinnos.in can be combined with myinnos.in
admin.myinnos.in cannot be combined with
user.myinnos.in
There must be one primary DNS server in each zone
Each zone can have multiple secondary DNS servers
Continue..
27. Also called DNS server
The program that stores information about domain
namespaces are called name server.
Primary name server (Master)
Secondary name server (Slave )
28. Also called DNS client
Resolvers are the clients that access the name
server
Used by browsers, e-mail clients, and client utilities
such as ping
31. /etc/named.conf describes the files that configure
the zones
Main configuration file
It define access controls
32. Default setup is for localhost 127.0.0.1
In named.conf add the following line
zone “myinnos.in" {
type master;
file “admin.myinnos.in”;
};
This allows myinnos.in to be resolved by
/var/named/admin.myinnos.in
There can be multiple domains in a single named.conf
file
33. Also, we can add the following line
zone “0.168.192.in-addr.arpa” IN {
type master;
file “admin.0.168.192”;
};
This allows for reverse lookup for the domain
It uses all or part of the 192.168.0.0 network
34. To start DNS
/etc/rc.d/init.d/named start
To restart DNS
/etc/rc.d/init.d/named restart
To stop DNS
/etc/rc.d/init.d/named stop
Make DNS start when you boot Linux
Add the command to start DNS to /etc/rc.d/rc.local
36. It's available to everyone at a great price .. Hackers never pay for
anything.
It is already fully loaded with all the stuff needed, no need to download
additional applications for something as silly as netcat.
Open source.. w00t!!! I have full f*#c@i&g control over my OS.
Hackers hate windows compatibility issues/so many libararies.
Hackers don’t want their system to crash or freeze when they’re about to
create history.
90% servers run on Linux.. so why should we be behind??
Linux is easy to customization, its customizable in every frigging way,
you can update/recompile the kernels too!!This is something we live for,
total control is the meaning of our lives.
38. Google Public DNS is a free, global DNS resolution
service, that you can use as an alternative to your
current DNS provider
Configure your network settings to use the IP addresses
8.8.8.8 and 8.8.4.4 as your DNS servers
Google DNS for
Speed up your browsing experience.
Improve your security.
Get the results you expect with absolutely no redirection.
41. Linux is a low cost, flexible, multitasking and highly secured
operating system.
It is widely made use in many applications.
DNS is an application that translates names to IP addresses and IP
addresses to names
DNS management is a critical part of the maintenance of any
Web site. Fortunately, although it can be a little complicated.
Organized in a hierarchical structure
To configure DNS, set up a forward and reverse zone