To know about Your System Ipaddress ....
Just Press W+R shortcut from keyboard or follow below images
    type cmd press enter

and then type ipconfig or ipconfig /allcompartments /all   then press enter ....



To Get Serial Number in Window System
open command prompt and type or copy paste by right click on mouse

wmic bios get serialnumber


To Get Completely Hardware, Components & Software Information inWindows
press in keyboard (Windows+R) & type
MSINFO32  press Enter

To know about System Motherboard Model Number
press W+R then type cmd enter then type systeminfo press enter scroll down you will find System Model

To Get System
Alt+f BIOS RESET
Alt+e NVRAM RESET


Thanking You
Hope U Like it.......

Hello Everyone,

In this tutorial, Let us Install & Configure Zimbra 7.2.5 Desktop on
Window 7.

You Can Install Zimbra in
Operating System :- Windows 8, Windows 7 and Windows Vista.
Processor :- 32 Bit and 64 Bit both Can Support

Requirement :-
Step1 :- At least 200MB free disk space is required to
install the software.

Step2 :- Additional 512MB free memory is required to run
Zimbra Desktop

You Can Download Zimbra Desktop 7.2.5 :-
Step3 :- http://www.zimbra.com/downloads/zimbr...

After Installation Need to Configure in GMAIL
Login into Gmail Account and Set the IMAP Enable
Step4 :- Enable IMAP in Setting

Step5 :- Then Click On Google Plus - Go to Security then Enable the Access to Low, Save and Exit


NOTE :- For Any Clarification Please Comment Below

Watch Next Video :- How to install Ubuntu 14.04

https://www.youtube.com/watch?
v=QkJmahizwO4&list=TLFuFUUOL3YmsshiR­7O5nLXmuJZMr
OsuZd


Thanking You
Hope U Like it........

<h1 style="display:none">Ubuntu 14.04</h1>

<h2 style="display:none">Linux Mint 17</h2>

<h3 style="display:none">Python</h3>

<h4 style="display:none">Nagios</h4>

Hello Everyone,

In this tutorial,

Let us Install Oracle Linux 7 in Virtual Box with Full Screen Resolution  --  64 Bit

You Can also Install in VMware Workstation 11 or Microsoft Hyper-V.

Minimum System Requirements

1.  x86-64 CPU (64-bit Macs, with an Intel Core 2 Duo, Intel Core i3, Intel Core i5, Intel Core i7, or Xeon processor).

2  2GB of System Memory (RAM).

3. 20GB of Disk Space(Hard Disk).

4. Graphics Card and Display capable of at least 1024x768.

5. Either a CD/DVD drive or a USB port for the installer media.

6. Internet Access.

Step1:- First Download Virtual box setup below is this link to download 

https://www.virtualbox.org/wiki/Downloads

Or

Another Link to Download Virtual Box

http://www.oracle.com/technetwork/server-storage/virtualbox/downloads/index.html

Select -- Virtual Box 4.3.X for Windows hosts 32 or 64 bit.   

(Where 'X' is the Latest Version)

Step2:- See My Video How to Install virtual box... Click Below link

http://youtu.be/__l_lhcwxwk

Step 3 :- Download ISO Images of Oracle Linux 7 by Clicking Below Link

http://www.oracle.com/technetwork/server-storage/linux/downloads/oracle-linux-7-2170224.html

Step 4 :- Just Check the Box of  (Accept License Agreement)

and then Click on --- OracleLinux-R7-U0-Server-x86_64-dvd.iso (3,826,253,824 bytes)  --- Download.

You Need to Create a New Account After Regsiter you Can Download it

Follow Instruction in My Video to See How to Install

For Full Screen Resolution….

Step4 :- sudo apt-get install virtualbox-guest-dkms virtualbox-guest-utils virtualbox-guest-x11                or

Step5 :- sudo apt-get install virtualbox-guest-dkms

Restart the VM and enjoy screen-size.

Mount the Guest Additions by selecting Devices --- Insert Guest Additions CD image… (or you can press Host + D)

Step6 :- run the VBoxLinuxAdditions.run script within the newly mounted cd

              or  sh VBoxLinuxAdditions.sh

NOTE :- For Any Clarification Please Below

Comment,

Like and

Share  us  and  help us to spread.

####--------------------------------------------------------------------------------------####

Subscribe :-   http://www.youtube.com/user/itcloudnet?sub_confirmation=1

Website    :-   http://www.cloudnetwork.in

Facebook :-   http://facebook.com/itCloudNetwork/

Twitter     :-   http://twitter.com/itcloudnet

Pinterset  :-   http://pinterset.com/itcloudnet

LinkedIn :-   http://in.linkedin.com/pub/itcloudnet

Google+   :-   https://plus.google.com/u/0/107923552480070716949/posts

Skype Id  :-   cloud.network1

E-Mail Id :-   itcloudnet@gmail.com

####----------------------------------------------------------------------------------------####                         

Thanking You

Hope U Like it........

Every computer or device on the Internet must have a unique number assigned to it called the IP address. This IP address is used to recognize your particular computer out of the millions of other computers connected to the Internet. When information is sent over the Internet to your computer how does your computer accept that information? It accepts that information by using TCP or UDP ports.


21 => FTP
22 => SSH
23 => Telnet
25 => SMTP Mail Transfer
43 => WHO IS Service
53 => name server (DNS)
80 => HTTP (Web server)
110 => POP protocol pop3 (for email)
995 => POP over SSL
3306 => MySQL Server
111 => rpcbind
953 => rndc
143 => IMAP Protocol (for email)
993 => IMAP Secure
443 => HTTP Secure
3128 => Squid Proxy
3306 => MysQL Server
3636 => Piranha
4643 => Virtuosso Power Panel
10000 => Webmin


Thanking You
Hope U Like it......

<h1 style="display:none">Squid Proxy Server</h1>

<h2 style="display:none">Linux Mint 17</h2>

<h3 style="display:none">Python</h3>

<h4 style="display:none">Squid Proxy</h4>

###SELinux Intro###
 Features:
  1. Restricts access by subjects (users and/or processes) to objects (files)
  2. Provides Mandatory Access Controls (MACs)
  3. MACs extend Discretionary Access Controls (DACs(Standard Linux Permissions))
  4. Stores MAC permissions in extended attributes of file systems
  5. SELinux provides a way to separate: users, processes (subjects), and objects, via labeling, and monitors/controls their interaction
  6. SELinux is integrated into the Linux kernel
  7. Implements sandboxes for subjects and objects
  8. Default RH5 implementation creates sandboxes (domains) for 'targeted' daemons and one sandbox (unconfined_t) for everything else
  9. SELinux is implemented/enabled by RH5, by default
 10. Operates in the following modes:
   a. Permissive - permission is always granted, but denials are logged in: /var/log/messages
   b. Enforcing - strictly enforces 'targeted' policy rules
   c. Disabled - Only DACs are applied
  11. Operating modes can be applied upon startup or while the system is running

SELinux Config files & Tools:
 1. sestatus - displays current SELinux status, including:
  a. policy name 'targeted'
  b. policy version '21'
  c. Operating mode: 'enforcing|permissive|disabled'

 2. /etc/sysconfig/selinux - primary startup|config file for SELinux
 3. /etc/selinux/targeted - top-level container for the 'targeted' policy
 4. setenforce = 0(permissive) 1(enforcing)
 5. '-Z' can be applied to the following tools to obtain SELinux context info:
  a. mv, cp, ls, ps, id
 6. chcon -R -t type file - applies SELinux label to file/directory

Tasks:
 1. Disable SELinux upon boot-up on LINUXCBTSERV4
  a. nano /etc/grub.conf
   a1. Update 'kernel' line to reflect: selinux=0

Note: If files(objects) lose their SELinux context, there are multiple ways to relabel them:
 1. 'touch /.autorelabel && reboot' - init will relable the system according to the 'targeted' policy
 2. 'fixfiles' - use to relabel objects (files) while the system is running

Note: List of daemons protected by the 'targeted' SELinux policy:
 1. apache(httpd)
 2. dchpd
 3. ntpd
 4. named
 5. syslogd
 6. squid
 7. snmpd
 8. portmap
 9. nscd
10. winbind

Note: The 'targeted' policy assigns ALL other subjects and objects to the 'unconfined_t' domain

Note: The default SELinux 'targeted' policy, using MACs, binds subject domains: i.e. 'httpd_t' to object types: i.e. 'httpd_config_t'

Note: SELinux MACs compound Linux DACs


Thanking You
Hope U Like it.......

How to Remove Sudo Password to Login into Sudo

Open shell and type: 

Step1 :- $ sudo visudo 

Add the following line to the END of the file:

<username> ALL=NOPASSWD: ALL

Replace <username> with your user name (without the <>).

Example:

Ubuntu ALL=NOPASSWD: ALL

save and exit the vi editer

its done now u can run any command from user Ubuntu

###User Account & Password Management###

There are three type of user account in Red hat Linux .
1.    Super user or Administrative account
2.    Regular user account
3.    service account

1.    Super User created automatically at the time of installation.
2.    Regular user Account:-
a.    Using command line method useradd or adduser command
b.    Graphical method by using Red hat user manager utility
 
# adduser user_name (Recommended : minimum 6 character used  in password)
# passwd user_name

Example:-
#adduser rakesh
#passwd rakesh
 Now open the file /etc/passwd to check the entry of user

#vi /etc/passwd
it contain 7 entry of each user
1.    Username
2.    Password
3.    userid
4.    groupid
5.    blank (User information field ) comment
6.    home directory
7.    login shell

password entry for each user will be stored in /etc/shadow
# vi /etc/shadow

now in order to check the Userid, Group we use /etc/login.def

# vi /etc/login.def
when any user account is created then user will get userid, groupid automatically from /etc/login.def

5th field is used for user information or comment

6th field is used for home directory. When any user is created its default home directory is created inside /home/rakesh

7th field is login shell. Default shell for user is /bin/bash different shells are used
    ksh, sh, csh, tcsh,zsh

shell is an user interface between user and O.S.

linux command shell is a prompt that allow us to interact with our system by executing various command.

In order to check the shell available use /etc/shells
# vi /etc/shells

in order to get the information about the group we need /etc/group
#vi /etc/group
it contain four field
1.    Group name
2.    password
3.    GroupId
4.    Member of group

# finger:this command is used to get the information about the user

Syntax:
    #finger username
    #finger rakesh

#id:this command is used to get userid, groupid of the user

syntax:
    #id username
    #id rakesh

Creating Group:
Syntax:
#groupadd groupname
 #groupadd g gid groupname
Example:
    #groupadd raj

Exercise:
Create a user that should have uid=1000 shell=sh description and home directory as /data
Sol:
    #useradd u 1000 c rakeshpundir s /bin/sh d /data rakesh
    #passwd rakesh

Grpahically
System Setting :-> User & Group
OR

#system-config-user

Every user have two group one is elementary group or primary group and secondary group
    -g    :    Primary Group
    -G    :    Secondary Group

Creating Group
#groupadd g1
#groupadd g2

Steps:
1.    adding group to the user
#usermod g g1 G g2 rakesh
2.    To change id of the user
#usermod u 1001 rakesh
3.    change comment
#usermod c rakeshsingh
4.    change home directory
#usermod d /rakesh-home rakesh –m
5.    change shell
#usermod s /bin/bash rakesh
6.    change user login name
#usermod l newname oldname
#usermod l rajesh rakesh
7.    Change Group name
#groupmod n newname oldname
#groupmod n group1 g1
8.    change Group id
#groupmod g 2005 group1

------------------------------------------------------------------------------------------
###User/Group Management###
--------------------------------------------------------------------------------------
Features:
 1. The ability to control users and groups

Primary tools:
 1. useradd - used to add users and modify group membership
 2. system-config-users

Task:
 1. Create a user named 'student1' using 'useradd'

Note: Default user settings derive from: /etc/login.defs
 a. useradd student1
 b. set password for user 'student1': passwd student1


Default User Accounts DB: /etc/passwd
student1:x:501:501::/home/student1:/bin/bash

username:shadow_reference:uid:gid:Description(GECOS):$HOME:$SHELL
Note: /etc/passwd is a world-readable file
Note: /etc/shadow now stores passwords in encrypted form
Note: /etc/shadow is NOT world-readable

Fields in /etc/shadow:
student1:$1$XSFMv2ru$lfTACjN.XxaxbHA0EkB4U0:13891:0:99999:7:::

1. username:
2. encrypted_password:
3. Days_since_Unix_epoch_password_was_changed (01/01/1970)
4. Days before password may be changed
5. Days after which the password MUST be changed
6. Days before password is to expire that user is warned
7. Days after password expires, that account is disabled
8. Days since Unix epoch, that account is disabled
9. Reserved field (currently unused)

2. Modify user 'student1' to have password expire after 45 days
a. usermod

Groups:
 1. groupadd - adds new group
 2. groups - lists groups on the system: /etc/group
/etc/group - maintains group membership information

Task: Create a 'sales' group and add 'linuxcbt' and 'student1' as members
 1. groupadd sales
 2. usermod -G sales linuxcbt
 3. usermod -G sales student1

Note: 2 types of groups exist:
 1. Primary - used by default for a user's permissions
 2. Supplemental - used to determine effective permissions

Note: use 'id' to determine the group information of user
Note: Create a new shell session to realize new group membership information

userdel/groupdel are used to delete users and groups, respectively

Features:
 1. The ability to restrict/control access to files

Note: 10 bits represent permissions for files (including directories)

Note: use 'ls -l' to examine permissions or GUI application like 'Nautilus'

-rwxrwxr-x 1 linuxcbt linuxcbt  681 Jan 13 11:31 regextest.pl

1st bit = file type. '-' = file, 'd' = directory
2nd - 4th bits = owner's permissions
r = read = 4
w = write = 2
x = execute = 1
- = none = 0

5th - 7th bits = group owner's permissions
r = read = 4
w = write = 2
x = execute = 1
- = none = 0

8th - 10th bits = everyone (world)
r = read = 4
w = write = 2
x = execute = 1
- = none = 0

Task:
1. Manipulate file permissions using 'chmod'
a. chmod -x regextest.pl

-rw-rw-r-- 1 linuxcbt linuxcbt 681 Jan 13 11:31 regextest.pl
rw = 6 or 4+2 for owner
rw = 6 or 4+2 for group owner
r = 4 for everyone else (world)

Octal notation: 664 for file 'regexetest.pl'

chmod 664 regextest.pl - removes execution for ALL users
chmod 775 regextest.pl - enables execution for ALL users


 2. Ensure that 'regextest.pl' is rw by owner and noone else
 a. chmod 600 regextest.pl

Note: File will now be rw by owner (linuxcbt) and 'root'

 3. Ensure that 'regextest.pl' is r by owner and noone else
 a. chmod 400 regextest.pl && ls -l regextest.pl

Note: chmod supports string values, which represent octal values
chmod +/- x file
chmod +/- w file
chmod +/- r file

chmod +/- u+x file - updates owner's execute permissions on the file
chmod +/- o+x file - updates other's execute permissions on the file
chmod +/- g+x file - updates group's execute permissions on the file

chmod a+rwx = chmod 777

chown - permits changing of ownership of files
 a. chown root regextest.pl - changes ownership to 'root'
 b. chown linuxcbt:sales regextest.pl - changes owner and group to 'linuxcbt:sales'

Task:
 Update 'regextest.pl' so that owner and group owner may modify the file

 a. chmod 660 regextest.pl

SETUID:
 Features:
  1. ability to execute file as owner

chmod 4760 regextest.pl - this will ensure that the perl script always executes as the user 'linuxcbt'
-rwsrw---- 1 linuxcbt sales 787 Jan 13 16:08 regextest.pl

's' in the execute position means that the program will execute as that user


SETGID:
 Features:
  1. Ability to enforce permissions to a directory structure

mkdir /sales
chmod 2775 /sales

Create a file in the '/sales' directory as 'linuxcbt'
seq 1000000 > linuxcbt.1million.txt


chgrp:
 Permits updating of group permissions


Sticky Bit:
 Features:
  1. Ability to ensure that users cannot delete others' files in a directory

drwxrwxrwt 23 root root 4096 Jan 13 15:05 /tmp/


/tmp - users cannot delete other user's files in '/tmp'

chmod 3777 /sales - ensures that /sales will not lose files from incorrect users

Task:
 1. Set '/sales' using sticky bit and test
  a. chmod 3777 /sales && ls -ld /sales OR chmod 777 /sales && chmod +t /sales


Thanking You
Hope U Like it......

Hello Everyone,

Let me show you, How to Install Roboform in Linux and Use of it

To Install Roboform, First Download the Roboform by Click Below Link to Install Roboform Both in Linux and Ubuntu Platform Supported.

http://www.roboform.com/platforms/linux

After Download Just Click Install Now and then Restart Firefox to have complete install.

watch my video to understand

Note:- For any Clarification Please Command Below


Thanking You
Hope U Like it........

1. The VNC system allows you to access the same desktop from a wide variety of platforms.

   2.  For Example, use a VNC viewer running on a PC on our desktop to display our Unix environments, which are running on a large server in the machine room downstairs.

• Obtaining VNC

1. VNC is freely available from the official VNC homepage and You Can Download it Below Link. http://www.realvnc.com/download.html

•    Code: Copy and paste into terminal

$  wget http://www.realvnc.com/dist/vnc-3.3.6-2.i386.rpm

• The Installation

• Code:

 $  rpm vnc-3.3.6-2.i386.rpm -i

• Code:

 $  vncserver

• The key line in the sample file above is the last one, which in this case is set to twm. This controls which window manager you wish VNC to use. 

• By default, Redhat systems use gnome, but you may be using kde. The twm should only be used if you do not have a window manager setup on your system. 

• If you are using kde, you should change twm to startkde and if you are using gnome, you should change it to gnome-session.

• You should also understand how to kill existing desktops, shutting VNC down. 

• To do this, you should type vncserver -kill :1 at the CLI, where 1 is the desktop you wish to kill off.

• That's it. VNC should now be successfully setup on your system.

•  The last piece of information you need is the ports VNC uses. For the VNC viewer, 5901 is used by default, and for java based VNC access, 5801 is used. 

• You will need to add rules to your firewall to allow traffic into either or both of these port numbers.

• To do so, I recommend that you use netstat a tool designed to give you information about what ports are listening for connections on your machine. 

• The following output is an example of what you can expect to see from a netstat command. 

 
Thanking You
Hope U Like it......