Linux administration quontra solutions


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QuontraSolutions is one of the leading online trainers of IT online training, Our Strengths are our team of IT Trainers; we are into online training with passion and dedication. We have our team of experienced trainers with real time experience & are dedicated towards providing quality online training. Quontra Solutions provides Linux online training by Industry experts with Real time Scenarios. Linux is having good demand in the market.
Our Linux online training program is job oriented. After completion of Linux training with us you should be able to work on any kind of project. After completion of Linux online training our dedicated team will be supporting you.
Please call us 404-900-9988 for demo on Linux. Quontra Solutions is the best Linux online training Institute in United States.
Training Offer: If you are going to join more than one member with you there will be 10% concession on your training fee.
Features of our training:
* Soft copy of material
* Real Time Examples
* Doubts clarification
* Very in depth course material with real time scenarios.
* We are providing class with highly qualified trainer.
* We will provide class and demo session at student flexible timings.
* In training case studies and real time scenarios covered.
* Each topic coverage with real time solutions.
* We will give every recorded session for play later.
* We are giving placement support by multiple consultancies in USA, UK etc.
* We will give full support while attending the interviews and contact us after completion of the course.
For More Details Contact Us: 3427 Vintage cir, SE Smyrna, GA-30080
Website :

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Linux administration quontra solutions

  1. 1. Linux Administration Quontra Solutionsonline Training with Placement support Call us: 404-900-9988 Email: WEBSITE:
  2. 2. Basic about Linux • What is Linux ? -Linux is an open source, freely distributable Unix like operating system that uses Linux kernel . • What is Kernel ? - Kernel is the program acting as chief of operations. • Is Linux Free? -Yes, Linux is one of the most prominent examples of free and open source software collaboration.
  3. 3. Installation of Linux Methods of installing Linux: • FTP:-This is one of the earliest methods for performing network installations. • HTTP:-The installation tree is served from a web server. • NFS:-The distribution tree is shared/exported on an NFS server. • SMB:- This method is relatively new, and not all distributions support it. The installation tree can be shared on a Samba server or shared from a Windows box. • From the Optical Media
  4. 4. • Username Field : • Password Field : • User-ID Field (UID): • Group-ID Field (GID): • GECOS: • Directory: • Shell: Managing User Account
  5. 5. • Under Linux, every file and program must be owned by a user. Each user has a unique identifier called a user ID (UID). • Each user must also belong to at least one group, a collection of users established by the system administrator. • Users may belong to multiple groups. Like users, groups also have unique identifiers, called group IDs (GIDs). • The /etc/passwd file stores the user’s login, encrypted password entry, UID, default GID, name (sometimes called GECOS), home directory, and login shell. Managing User Account
  6. 6. File System of Linux A file system is a data structure which interprets the physical sector of a disc into logical directory structure. The logical structure will help computers and users to trace files. The file system registers the location of the files and directories on the disc .
  7. 7. Network Configuration  The ifconfig program is primarily responsible for setting up network interface cards (NICs).  All of its operations can only be performed through command-line options, as its native format has no menus or graphical interface.  Multiple IP address can be assigned for single NIC.  Network configuration file stores in /etc/sysconfig/network- scripts/ifcfg  Global Parameter configuration file stores in /etc/sysconfig/network.
  8. 8. Network Configuration File • DEVICE=eth1 • BOOTPROTO=none • HWADDR=00:12:79:9E:DC:0B • ONBOOT=yes • TYPE=Ethernet • • USERCTL=no • PEERDNS=yes • IPV6INIT=no • IPADDR= • NETMASK= • GATEWAY=
  9. 9. DHCP • DHCP provides a method for hosts on a network to request, and be granted, configuration information including the addresses of router and nameservers. • DHCP forwarding agents allow clients to receive addresses from a server which is not located on the same network segment. • IP addresses are either dynamically assigned from a range or pool of addresses or statically assigned by MAC address.
  10. 10. Service Profile: DHCP • Packages: dhcp • Daemons: dhcpd • Script: dhcpd • Ports: 67(bootps), 68(bootpc) • Configuration: /etc/dhcpd.conf /var/lib/dhcp/dhcpd.leases • Related: dhclient • Sample configuration provided under : /usr/share/doc/dhcp - <version>
  11. 11. DHCP Configuration File • global definitions • ddns-update-style none; # turn off DDNS updates • option domain-name “” ; # domain name given to client • option domain-name-servers; • default-lease-time 21600; # seconds till expire • max-lease-time 43200; # maximum lease time • subnet netmask • { • option routers; # local gateway • option subnet-mask; # local subnet mask • # Range configuration DHCP • range; • # static configuration for each host BOOTP • host station1 • { • hardware ethernet 00:a0:cc:3d:0b:39; • fixed-address; • } • }
  12. 12. FTP • FTP configuration file stores in /etc/vsftpd/vsftpd.conf • Default User(Anonymous) can access only /var/ftpG • Generally used to transfer single with proper authentication from previously configured sender’s folder to reciver’s folder
  13. 13. FTP Configuration File • anonymous_enable=YES • anon_upload_enable=YES • /etc/vsftpd/ftpusers ==> denied access • /etc/vsftpd/user_list ==> userlist_enable=YES • userlist_deny=YES/NO
  14. 14. Telnet • Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communications facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP). • Telnet can not restrict a user after connection to the host has made, (i.e a user telnetting to a remote host can totally access the host computer if he logged in as a root)
  15. 15. Network File System/Service • The Network File System (NFS) was developed to allow machines to mount a disk partition on a remote machine as if it were a local disk. It allows for fast, seamless sharing of files across a network. • Exported directories are defined in /etc/exports • Each entry specifies the hosts to which the filesystem is exported plus associated permission and options
  16. 16. THANK YOU !! By