How to communicate with base machine using kvm

Creating a bridge device

#brctl addbr "br0" <---------- bridge name 

after this
 
 Adding devices to a bridge

#brctl addif br0 eth0 <----------------hare eth0 is your physical interface
 
use this commands for show your bridge

#brctl show
 
enable stp on bridge

#brctl stp br0 on
 
now up the bridge

#ifup br0
 
than set ip address to bridge like this

#ifconfig br0 192.168.1.253 netmask 255.255.255.0

now select br0 during configure your kvm

configure ip address on kvm machine with range of same network

**************** i hope you Enjoy it ***************

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How to set Password Policy to let users Comply rules.

1 number of days for password Expiration.
2 Minimum number of days available of password.
3 number of days for warnings before expiration.
4 limit using a password that was used in past
5 Set minimum password length

open this file

# vi /etc/login.defs
 
(output of this file before changing )
 
16 #
17 PASS_MAX_DAYS 99999
18 PASS_MIN_DAYS 0
19 PASS_MIN_LEN 5
20 PASS_WARN_AGE 7
21 

edit this file like....

change line from 

17 PASS_MAX_DAYS 60
18 PASS_MIN_DAYS 2
19 PASS_MIN_LEN 6
20 PASS_WARN_AGE 2 <<< change all of these according to your need and 

at line number 16 enter this text

password sufficient pam_unix.so sha512 shadow nullok try_first_pass remember=5

save this file and exit

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Configure LUKS-encrypted partitions and logical volumes to prompt for password and mount a decrypted file system at boot.

First of all create a partitons than 

# cryptsetup luksFormat /dev/sda7 <----------- sda7 is your partitions number

 enter password now

#cryptsetup luksOpen /dev/sda7 mysecret
 
give your password
 
after that format it
 
#mkfs.ext4 /dev/mapper/mysecret
 
#mkdir /mysecert
 
open fstab file and mount it parmanent

#vi /etc/fstab

/dev/mapper/mysecret              /mysecret                ext4              defaults     0  0

#vi /etc/crypttab

mysecret /dev/sda7

# mount -a 

now your drive is encrypt........

Original Post By Dinesh Dhiman 

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Linux HotKeys do you know?

Alt+f1 for Application menu
Ctrl+l to Cear screen
Alt+f2 to Open run application window
Alt+f3 for Find
Alt+f4 to Close application
Alt+f9 to Minimise window
Ctrl-Alt-D Show desktop
Ctrl-Alt-Backspace Restart XWindows

Actual post by Dinesh Dhiman

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