Simón Alonso Sánchez

Setting user object attributes msDS-SupportedEncryptionTypes and userAccountControl using the cmdlets Get-QADUser and Set-QADUser to enable encryption methods work with Kerberos

set-Location c:\
Add-PSSnapin Quest.ActiveRoles.ADManagement
Get-PSsnapin
Set-QADPSSnapinSettings -DefaultSizeLimit 0
Get-Command Get-QAD*

Get-QADUser -sl 0 -IncludeAllProperties -SerializeValues

PS C:\> Get-QADUser spider001 -sl 0 -IncludeAllProperties -SerializeValues > C:\User.txt

PS C:\> Get-QADUser spider001 -sl 0 -IncludedProperties userAccountControl,’msDS-SupportedEncryptionTypes’ | Format-Tabl

e name,userAccountControl,’msDS-SupportedEncryptionTypes’

Name userAccountControl msDS-SupportedEncryptionTypes

spider001 2163200 31

PS C:\> Set-QADUser spider002 -objectAttributes @{‘msDS-SupportedEncryptionTypes’=31}

PS C:\> Set-QADUser spider002 -objectAttributes @{‘userAccountControl’=2163200}

PS C:\> Set-QADUser spider003 -objectAttributes @{‘msDS-SupportedEncryptionTypes’=31}

PS C:\> Set-QADUser spider003 -objectAttributes @{‘userAccountControl’=2163200}

PS C:\> Get-QADUser spider002 -sl 0 -IncludedProperties userAccountControl,’msDS-SupportedEncryptionTypes’ | Format-Tabl

e name,userAccountControl,’msDS-SupportedEncryptionTypes’

Name userAccountControl msDS-SupportedEncryptionTypes

spider002 2163200 31

Tags: cmdlets, Enable, encryption, Get-QADUser, Kerberos, methods, Set-QADUser, Setting. user. object. attributes. msDS-SupportedEncryptionTypes. userAccountControl. using

Active Directory, Powershell | salonso | February 14, 2012 12:02 am | Comments (0)

Enable computer encryption types for using Kerberos

mmc adsiedit.msc || ADSI group policy editor

Encryption types allowed (default value 31):

DES_CBC_CRC
DES_CBC_MD5
RC4_HMAC_MD5
AES128_HMAC_SHA1
AES256_HMAC_SHA1

Tags: computer, Enable, encryption, Kerberos, types

Active Directory | salonso | February 13, 2012 9:29 pm | Comments (0)

Configure encryption types allowed for using Kerberos

mmc gpedit.msc || Local group policy

Encryption types:

DES_CBC_CRC
DES_CBC_MD5
RC4_HMAC_MD5
AES128_HMAC_SHA1
AES256_HMAC_SHA1

Tags: allowed, Configure, encryption, Kerberos, types

Active Directory | salonso | 9:22 pm | Comments (0)

Trust this computer for delegation to any service usign Kerberos

mmc dsa.msc || Active Directory Users and Computers

Tags: computer, delegation, Kerberos, Service, Trust

Active Directory | salonso | 9:12 pm | Comments (0)

setup grub boot loader password restriction

Generate a hash for password

root@Desktop-01:/etc/grub.d# grub-mkpasswd-pbkdf2

Enter password:
Reenter password:

Your PBKDF2 is grub.pbkdf2.sha512.10000…..

Create and define restriction rules for grub

root@Desktop-01:/etc/grub.d# cat 40_custom
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the ‘exec tail’ line above.
set superusers="root"
password_pbkdf2 root grub.pbkdf2.sha512.10000……

Update the grub rules

root@Desktop-01:/etc/grub.d# grub-mkconfig

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the ‘exec tail’ line above.
set superusers="root"
password_pbkdf2 root grub.pbkdf2.sha512.10000……
### END /etc/grub.d/40_custom ###

root@Desktop-01:/etc/grub.d# update-grub
Generating grub.cfg …
Found background image: /usr/share/images/desktop-base/desktop-grub.png
Found linux image: /boot/vmlinuz-2.6.32-5-amd64
Found initrd image: /boot/initrd.img-2.6.32-5-amd64
done

Debian, Linux | salonso | February 6, 2012 1:36 am | Comments (0)

OpenXenManager graphical interface to manage Xen Cloud Platform (XCP)

OpenXenManager is a graphical interface to manage XenServer / Xen Cloud Platform (XCP) hosts through the network. OpenXenManager is an open-source multiplatform clone of XenCenter (Citrix).

Project homepage

http://sourceforge.net/projects/openxenmanager/

It is Open Source tool and developed in Phyton.

I dunno how it is developped but the most important dependencies for running it are packaged in Phyton. I am using it in Debian linux distribution since a year and works stable.

The purpose about this powerfull tool it is manage the Xen XCP’s domains and the virtual machines which are running into the domains using the Xen XCP’s hypervisor.

You can do the most important virtualization tasks with a couple of clicks using the graphical user interface.

Have more features than his brother Citrix XenCenter that only works under Windows platform.

It is easy install in every linux distribution, you only must deploy his dependencies before running it.

This is a nice tool.

Screenshots

Tags: graphical, interface, manage, OpenXenManager, XenServer

Virtualization, XEN | salonso | 12:33 am | Comments (0)

Checks the Linux supported release

3.1.1.005-GEN000100.bash

 
#!/bin/bash
# Copyright (C) 2011 simonalsa
# http://www.simonalsa.com
# Author Simon Alonso Sanchez <simonalsa@simonalsa.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2
# of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
# Security Technical Implementation Guide (STIG)
# Security Readiness Review (SRR)
# Tested in GNU/Linux Debian distribution
 
# STIG|SRR definition
NUMBER="3.1.1.005"
LABEL="GEN000100"
 
# Section:
SECTION="Linux overview and site information"
 
# Process:
PROCESS="Operating system"
 
# Description:
DESCRIPTION="Checks the Linux supported release"
 
# Include global preferences
if [ -e $PWD/preferences.cfg ]; then
        source $PWD/preferences.cfg
else
        echo -e "Can not include the global preferences at $PWD/preferences.cfg \r"
        exit
fi
 
# Include local preferences
if [ -e $PWD/$NUMBER-$LABEL.prefs ]; then
        source $PWD/$NUMBER-$LABEL.prefs
else
        echo -e "Can not include the local preferences at $PWD/$NUMBER-$LABEL.prefs \r"
        exit
fi
 
# Section.Description
echo -e "STIG|SRR definition \r"
echo -e "\t Number: $NUMBER \r"
echo -e "\t Label: $LABEL \r"
echo -e "\t Section: $SECTION \r"
echo -e "\t Process: $PROCESS \r"
echo -e "\t Description: $DESCRIPTION \r"
echo -e "\r"
 
# Perform
 
if [ -x $CMD_LSB_RELEASE ]; then
 
        CMD=$($CMD_LSB_RELEASE -d -s)
        if [ $? -eq 0 ]; then
                echo -e "Linux LSB release: \r"
                echo -e "\t $CMD \r"
        else
                echo -e "Can not locate the Linux LSB release \r"
        fi
else
        echo -e "Can not locate the $CMD_LSB_RELEASE in the filesystem \r"
        exit
fi
 
 
if [ -x $CMD_UNAME ]; then
        CMD=$($CMD_UNAME)
        if [ $? -eq 0 ]; then
                KERNEL_NAME=$($CMD_UNAME --kernel-name)
                KERNEL_RELEASE=$($CMD_UNAME --kernel-release)
                KERNEL_VERSION=$($CMD_UNAME --kernel-version)
                KERNEL_MACHINE=$($CMD_UNAME --machine)
                KERNEL_PROCESSOR=$($CMD_UNAME --processor)
                KERNEL_HARDWARE=$($CMD_UNAME --hardware-platform)
                KERNEL_OS=$($CMD_UNAME --operating-system)
 
                echo -e "Kernel release: \r"
                echo -e "\t Name: $KERNEL_NAME \r"
                echo -e "\t Release: $KERNEL_RELEASE \r"
                echo -e "\t Version: $KERNEL_VERSION \r"
                echo -e "\t Machine: $KERNEL_MACHINE \r"
                echo -e "\t Processor: $KERNEL_PROCESSOR \r"
                echo -e "\t Hardware: $KERNEL_HARDWARE \r"
                echo -e "\t Operating system: $KERNEL_OS \r"
 
        else
                echo -e "Can not locate the Linux Kernel release \r"
        fi
else
        echo -e "Can not locate the $CMD_UNAME in the filesystem \r"
        exit
fi
 
echo -e "\r"

3.1.1.005-GEN000100.bash

# Nothing

Sample output

simonalsa@Desktop-01:~/$ bash 3.1.1.005-GEN000100.bash
STIG|SRR definition
         Number: 3.1.1.005
         Label: GEN000100
         Section: Linux overview and site information
         Process: Operating system
         Description: Checks the Linux supported release

Linux LSB release:
         Debian GNU/Linux 6.0.3 (squeeze)
Kernel release:
         Name: Linux
         Release: 2.6.32-5-amd64
         Version: #1 SMP Thu Nov 3 03:41:26 UTC 2011
         Machine: x86_64
         Processor: unknown
         Hardware: unknown
         Operating system: GNU/Linux

Tags: Checks, linux, release, SRR, STIG, supported

Debian, Linux, Programación, Scripting, Scripts, Security, Shell, SRR, STIG | salonso | January 26, 2012 9:24 pm | Comments (0)

Bash shell script for test the availability about commands in the filesystem

The objective is the reuse about variables and why not all GNU/Linux distributions installs the commands by default in the same place

I am going to allocate a variable per each different command. This file will be included in other shell scripts.

preferences.cfg

CMD_AWK="/usr/bin/awk"
CMD_CAT="/bin/cat"
CMD_CHGRP="/bin/chgrp"
CMD_CHMOD="/bin/chmod"
CMD_DD="/bin/dd"
CMD_DIFF="/usr/bin/diff"
CMD_ECHO="/bin/echo"
CMD_FIND="/usr/bin/find"
CMD_GREP="/bin/grep"
CMD_LAST="/usr/bin/last"
CMD_LASTB="/usr/bin/lastb"
CMD_LS="/bin/ls"
CMD_LSB_RELEASE="/usr/bin/lsb_release"
CMD_MKDIR="/bin/mkdir"
CMD_MKFS="/sbin/mkfs.ext2"
CMD_MKNOD="/bin/mknod"
CMD_MOUNT="/bin/mount"
CMD_MYSQL="/usr/bin/mysql"
CMD_PHP="/usr/bin/php5"
CMD_SED="/bin/sed"
CMD_SEQ="/usr/bin/seq"
CMD_SORT="/usr/bin/sort"
CMD_STAT="/usr/bin/stat"
CMD_TAIL="/usr/bin/tail"
CMD_TOUCH="/bin/touch"
CMD_TUNE2FS="/sbin/tune2fs"
CMD_UNAME="/bin/uname"
CMD_YES="/usr/bin/yes"
CMD_WC="/usr/bin/wc"

This shell script "preferences.bash" checks the availability about each command defined in the variables saved in the data file "preferences.cfg".

preferences.bash

#!/bin/bash
# Check the availability about the commands that will be used
 
# Include global preferences
source $PWD/preferences.cfg
 
CMD=$($CMD_CAT $PWD/preferences.cfg)
 
echo -e &quot;Check the availability about the commands that will be used \r&quot;
 
# Checks if path is ok
for line in $CMD;
do
        TEST=$($CMD_ECHO &quot;$line&quot; | $CMD_AWK -F= '{ print $2 }' | $CMD_SED 's/&quot;//g')
 
        echo -n &quot;&quot;
        if [ -e $TEST ]; then
                echo -n &quot;[Passed]&quot;
        else
                echo -n &quot;[Failed]&quot;
        fi
 
        echo -n &quot; ... $TEST&quot;
        echo -e &quot;\r&quot;
done;

Sample output

Check the availability about the commands that will be used
[Passed] … /usr/bin/awk
[Passed] … /bin/cat
[Passed] … /bin/chgrp
[Passed] … /bin/chmod
[Passed] … /bin/dd
[Passed] … /usr/bin/diff
[Passed] … /bin/echo
[Passed] … /usr/bin/find
[Passed] … /bin/grep
[Passed] … /usr/bin/last
[Passed] … /usr/bin/lastb
[Passed] … /bin/ls
[Passed] … /usr/bin/lsb_release
[Passed] … /bin/mkdir
[Passed] … /sbin/mkfs.ext2
[Passed] … /bin/mknod
[Passed] … /bin/mount
[Failed] … /usr/bin/mysql
[Failed] … /usr/bin/php5
[Passed] … /bin/sed
[Passed] … /usr/bin/seq
[Passed] … /usr/bin/sort
[Passed] … /usr/bin/stat
[Passed] … /usr/bin/tail
[Passed] … /bin/touch
[Passed] … /sbin/tune2fs
[Passed] … /bin/uname
[Passed] … /usr/bin/yes
[Passed] … /usr/bin/wc

Tags: available, bash, commands, filesystem, shell script, testing

Linux, Programación, Scripting, Scripts, Security, Shell, SRR, STIG | salonso | 8:21 pm | Comments (0)

bash shell script for set the memory RAM values of all the virtual machines availables (DMC dynamic range limits) in a Xen XCP domain

This bash shell script reads from file the configuration (Memory.pref) about the predefined virtual machines memory ram values and sets the values for each one virtual machines available (DMC dynamic and static range limits) in a Xen XCP domain.

Memory.bash

      1 #!/bin/bash
      2 VM_NAMES=$(for i in `xe vm-list params=name-label | grep "name-label" | grep -v "Control" | sort | awk -F": " ‘{ print $2 }’`; do echo $i        ; done)
      3 for VM_NAME in $VM_NAMES;
      4 do
      5    UUID=$(xe vm-list name-label=$VM_NAME params=uuid | grep uuid | awk -F": " ‘{ print $2 }’)
      6    if [ $? -eq 0 ]; then
      7       LIMITS=$(cat Memory.prefs | grep $VM_NAME)
      8       if [ $? -eq 0 ]; then
      9          MINIMUM_DYN=$(echo $LIMITS | awk -F":" ‘{ print $2 }’)
     10          MINI_DYN=$[$MINIMUM_DYN * 1024 * 1024]
     11          MAXIMUM_DYN=$(echo $LIMITS | awk -F":" ‘{ print $3 }’)
     12          MAXI_DYN=$[$MAXIMUM_DYN * 1024 * 1024]
     13
     14          MINIMUM_ST=$(echo $LIMITS | awk -F":" ‘{ print $4 }’)
     15          MINI_ST=$[$MINIMUM_ST * 1024 * 1024]
     16          MAXIMUM_ST=$(echo $LIMITS | awk -F":" ‘{ print $5 }’)
     17          MAXI_ST=$[$MAXIMUM_ST * 1024 * 1024]
     18
     19          #echo "DYN: $MINIMUM_DYN as $MINI_DYN ….VS… $MAXIMUM_DYN as $MAXI_DYN"
     20          #echo "ST: $MINIMUM_ST as $MINI_ST ….VS… $MAXIMUM_ST as $MAXI_ST"
     21
     22          CHECK1=false
     23          SETPARAM=$(xe vm-param-set uuid=$UUID memory-static-min=$MINI_ST)
     24          if [ $? -eq 0 ]; then
     25             CHECK1=true;
     26          fi
     27          SETPARAM=$(xe vm-param-set uuid=$UUID memory-static-max=$MAXI_ST)
     28          if [ $? -eq 0 ]; then
     29             CHECK2=true;
     30          fi
     31
     32          if [ $CHECK1 = true ]; then
     33             if [ $CHECK2 = true ]; then
     34                echo "The DMC static range ( $MINIMUM_ST … $MAXIMUM_ST ) about $VM_NAME virtual machine has been updated successfully"
     35             else
     36                echo "Can not update the maximun DMC static range about $VM_NAME virtual machine"
     37             fi
     38          else
     39             echo "Can not update the minimum DMC static range about $VM_NAME virtual machine"
     40          fi
     41
     42          SETPARAM=$(xe vm-memory-dynamic-range-set uuid=$UUID min=$MINI_DYN max=$MAXI_DYN)
     43          if [ $? -eq 0 ]; then
     44             echo "The DMC dynamic range ( $MINIMUM_DYN … $MAXIMUM_DYN ) about $VM_NAME virtual machine has been updated successfully"
     45          else
     46             echo "Can not update the DMC dynamic range about $VM_NAME virtual machine"
     47          fi
     48       fi
     49    fi
     50 done

Set the default memory ram values for each virtual machine in "Memory.prefs"

Fields:

1- Virtual machine name as "name-label"

2.- DMC’s dynamic lower limit value about as "memory-dynamic-min"

3.- DMC’s dynamic higger limit value about as "memory-dynamic-max"

4.- DMC’s static lower limit as "memory-static-min"

5.- DMC’s static higger as "memory-static-max"

Memory.prefs

      1 Application-Server-01:256:512:192:576
      2 Application-Server-02:256:512:192:576
      3 Application-Server-03:256:512:192:576
      4 Debian-Desktop-1.0:256:384:224:416
      5 DNS-Server-1.0:64:88:48:104
      6 DNS-Server-2.0:64:88:48:104
      7 File-Server-1.0:128:192:96:224
      8 File-Server-2.0:128:192:96:224
      9 LDAP-Server-1.0:64:88:48:104
     10 LDAP-Server-2.0:64:88:48:104
     11 Log-Server-1.0:64:88:48:104
     12 Sql-Server-1.0:128:256:96:224
     13 Web-Server-1.0:88:152:72:168
     14 Web-Server-2.0:88:152:72:168
     15 Web-Server-3.0:88:152:72:168

Output

[root@thor ~]# bash Memory.bash

The DMC static range ( 192 … 576 ) about Application-Server-01 virtual machine has been updated successfully
The DMC dynamic range ( 256 … 512 ) about Application-Server-01 virtual machine has been updated successfully
The DMC static range ( 192 … 576 ) about Application-Server-02 virtual machine has been updated successfully
The DMC dynamic range ( 256 … 512 ) about Application-Server-02 virtual machine has been updated successfully
The DMC static range ( 192 … 576 ) about Application-Server-03 virtual machine has been updated successfully
The DMC dynamic range ( 256 … 512 ) about Application-Server-03 virtual machine has been updated successfully
The DMC static range ( 224 … 416 ) about Debian-Desktop-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 256 … 384 ) about Debian-Desktop-1.0 virtual machine has been updated successfully
The DMC static range ( 48 … 104 ) about DNS-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 64 … 88 ) about DNS-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 48 … 104 ) about DNS-Server-2.0 virtual machine has been updated successfully
The DMC dynamic range ( 64 … 88 ) about DNS-Server-2.0 virtual machine has been updated successfully
The DMC static range ( 96 … 224 ) about File-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 128 … 192 ) about File-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 96 … 224 ) about File-Server-2.0 virtual machine has been updated successfully
The DMC dynamic range ( 128 … 192 ) about File-Server-2.0 virtual machine has been updated successfully
The DMC static range ( 48 … 104 ) about LDAP-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 64 … 88 ) about LDAP-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 48 … 104 ) about LDAP-Server-2.0 virtual machine has been updated successfully
The DMC dynamic range ( 64 … 88 ) about LDAP-Server-2.0 virtual machine has been updated successfully
The DMC static range ( 48 … 104 ) about Log-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 64 … 88 ) about Log-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 96 … 224 ) about Sql-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 128 … 256 ) about Sql-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 72 … 168 ) about Web-Server-1.0 virtual machine has been updated successfully
The DMC dynamic range ( 88 … 152 ) about Web-Server-1.0 virtual machine has been updated successfully
The DMC static range ( 72 … 168 ) about Web-Server-2.0 virtual machine has been updated successfully
The DMC dynamic range ( 88 … 152 ) about Web-Server-2.0 virtual machine has been updated successfully
The DMC static range ( 72 … 168 ) about Web-Server-3.0 virtual machine has been updated successfully
The DMC dynamic range ( 88 … 152 ) about Web-Server-3.0 virtual machine has been updated successfully

Runtime RAM values

"xentop"

Tags: bash, DMC, domain, dynamic, limits, memory, RAM, range, set, shell script, values, Virtual Machines, VM, XCP, Xen

Configuración, Virtualization, XEN | salonso | January 22, 2012 12:37 am | Comments (0)

DMC (Dynamic Memory Control) feature at Xen XCP

Dynamic Memory Control (DMC) is a technology provided by Xen Cloud Platform (XCP).

DMC allows you to change the amount of host memory assigned to any running virtual server, without rebooting it.

Using DMC, it’s possible to operate a guest virtual machine in one of two modes:

1) Target Mode
The administrator specifies a memory target for the guest. XCP adjusts the guest’s memory allocation to meet the target.

2) Dynamic Range Mode
The administrator specifies a dynamic memory range for the guest. XCP chooses a target from within the range and adjusts the guest’s memory allocation to meet the target. Dynamic memory range represents the lower and upper limit of a dynamic memory range. It’s the minimum and maximun amount of memory that the administrator is happy for a guest to use.

You can alter the VM’s DMC mode "as you want" online without reboot it.

Check http://wiki.xensource.com/xenwiki/Dynamic_Memory_Control for more information

For example:

1) Mode As Target Mode ( 160 MB )
[root@thor ~]# xe vm-memory-target-set uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e target=167772160
[root@thor ~]# xe vm-param-list uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e | grep "memory-" | grep -v "last" | grep -v "recomendation"
…
…
memory-static-max ( RW): 167772160
memory-static-min ( RW): 67108864
…
…

[root@thor ~]# xe vm-param-get uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e param-name=memory-target
167772160

"DNS-Server-XX"

2) Mode As Dynamic Range Mode ( [64...128] MB )

Set VM’s DMC limits
[root@thor ~]# xe vm-memory-dynamic-range-set uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e min=67108864 max=134217728

Check VM’s DMS limits

[root@thor ~]# xe vm-param-list uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e | grep "memory-" | grep -v "last" | grep -v "recommendations"
…
…
memory-dynamic-max ( RW): 134217728
memory-dynamic-min ( RW): 67108864
…
…

[root@thor ~]# xe vm-param-get uuid=9e07177c-5bee-61a3-f743-6675f6a6a81e param-name=memory-target
134217728

"DNS-Server-XX"

Really nice powerfull feature

Tags: Control, DMC, dynamic, feature, memory, XCP, Xen

Linux, Virtualization, XEN | salonso | January 21, 2012 5:45 pm | Comments (0)

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