Wise people learn when they can; fools learn when they must - Arthur Wellesley

Sunday, 3 March 2019

RHEL6-46– BOOT PROCESS



                            RHEL6-46– BOOT PROCESS  
RHEL 6:

Have you ever thought what happen in between you switch on the power button and prompted for username/password?  


The tasks ran behind are collectively termed as BOOT PROCESS,

It starts after pressing power button,

Saturday, 2 March 2019

LINUX-51 LVM REVIEW / RECAP

                                  LINUX-51  LVM REVIEW


                LINUX LVM REVIEW / RECAP:
                     
  1. What is LVM
  2. Why LVM is required
  3. What is the difference between LVM & RAID
  4. What is Physical Extent (PE) & Logical Extent (LE) 
  5. Define PV, LV, VG
  6. How to create PV
  7. How to create VG
  8. How to create LV

Sunday, 18 November 2018

VMW3- HOW TO ADD ESXi/HOST’S TO vCenter



                 HOW TO ADD ESXi/HOST’S TO vCenter

We can connect all Hosts/ESXi individually and manage as well, if it is possible then why to add them in vCenter?

Just imagine a setup where 10 hosts are carrying several VM’s, then imagine to log in every host and manage them. How it feels?

Scary !!! isn’t it?

What is the first question coming in mind? How great it would be if I can manage all of them from one place, Right!!!   Yes…… Exactly,

Thursday, 8 November 2018

VMW2- ESXi 6.5 INSTALLATION


                                    ESXi 6.5 INSTALLATION

Open Vmware Workstation, go to

File è New Virtual Machine è Custom (Advanced)

Now do as given in following snapshots,

VMW1- vCenter 6.5 INSTALLATION IN WINDOWS


                        vCenter 6.5 INSTALLATION IN WINDOWS

First install windows 2012

Following is setting of my Windows 2012 in vmware workstation,



Sunday, 21 October 2018

50 SECURITY & HARDENING (BASICS) -P5 (LOGS & LOG FILES SECURITY)


         LINUX- 50 SECURITY & HARDENING (BASICS) -P5
IN LINUX (RHEL6 & RHEL7),

USER/LOGIN SECURITY
NETWORK SECURITY
FILE / OPERATING SYSTEM SECURITY
PHYSICAL SECURITY
LOG EVERYTHING
LOG FILE SECURITY

We already covered USER, NETWORK, FILE/OPERATING SYSTEM SECURITY and PHYSICAL SECURITY.

Now it’s time to collect & secure evidence.

LOG EVERYTHING

LINUX- 49 SECURITY & HARDENING (BASICS) -P4 (PHYSICAL SECURITY)


              LINUX- 49 SECURITY & HARDENING (BASICS) -P4
IN LINUX (RHEL6 & RHEL7),

USER/LOGIN SECURITY
NETWORK SECURITY
FILE / OPERATING SYSTEM SECURITY
PHYSICAL SECURITY
LOG EVERYTHING
LOG FILE SECURITY

We already covered USER, NETWORK, & FILE/OPERATING SYSTEM SECURITY. Let’s start with PHYSICAL SECURITY.

User/Network/File & Operating system security is already implemented, then why physical security is required?

Thursday, 18 October 2018

48 SECURITY & HARDENING (BASICS) -P3 (FILE/OPERATING SYSTEM SECURITY)


        LINUX- 48 SECURITY & HARDENING (BASICS) -P3

IN LINUX (RHEL6 & RHEL7),

USER/LOGIN SECURITY
NETWORK SECURITY
FILE / OPERATING SYSTEM SECURITY
PHYSICAL SECURITY
LOG EVERYTHING
LOG FILE SECURITY

We already covered USER SECURITY & NETWORK SECURITY. Let’s start FILE & OPERATING SYSTEM SECURITY.

Tuesday, 2 October 2018

LINUX- 47 SECURITY & HARDENING (BASICS) -P2 (NETWORK SECURITY)



         LINUX- 47 SECURITY & HARDENING (BASICS) -P2

 LINUX (RHEL6 & RHEL7),

USER/LOGIN SECURITY
NETWORK SECURITY
FILE / OPERATING SYSTEM SECURITY
PHYSICAL SECURITY
LOG EVERYTHING

LOG FILE SECURITY

We already covered USER SECURITY, Next is NETWORK SECURITY.

Once we connect to Network, it is now open for entire world. And we are not supposed to open for all, only trusted connections should be allowed.