การกำหนดสิทธ์ให้บางคนส่งเมลออกข้างนอกได้เท่านั้น

สิ่งที่ต้องทำมีดังนี้

1. แก้ไขไฟล์ #vim main.cf
เพิ่มบรรทัดด้านล่าง

smtpd_restriction_classes = external, local_only
external = reject_unauth_destination
local_only = check_recipient_access hash:/etc/postfix/local_domains, reject_unauth_destination
smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/restricted_senders

2. สร้างไฟล์ local_domains แล้วแอดโดเมนที่ต้องการให้ส่งเมลออกได้ (ส่วนใหญ่เป็นเมลภายในบริษัท) ดังนี้
#vim local_domains
domain.com  OK
abc.domain.org  OK

บันทึก แล้ว postmap /etc/postfix/local_domains

3. สร้างไฟล์ #vim restricted_senders
เพิ่มข้อมูลดังนี้

บรรทัดที่ 1: ใส่เมลที่ต้องการให้ส่งเมลออกได้
บรรทัดที่ 2: ใส่โดเมนที่ไม่ต้องการให้ส่งเมลออกไป

#vim restricted_senders
abc@domain.com  OK
domain.com  local_only

* สำหรับการเพิ่มเมลคนอื่น ๆ ก็ใส่เพิ่มเข้ามาก่อนบรรทัด domain.com  local_only
เสร็จแล้วรันคำสั่ง
#postmap /etc/postfix/restricted_sendes

4. ให้ตรวจสอบ file /etc/default/saslauthd

# Example: MECHANISMS="pam"
#MECHANISMS="ldap"
PARAMS="-r"
MECHANISMS="rimap -O 192.168.0.xx" (IP Mail server ตัวหลัก)

OPTIONS="-c -m /var/spool/postfix/var/run/saslauthd -r"

5. สุดท้ายสั่ง service postfix ,saslauthd เพื่อใช้งาน
/etc/init.d/postfix restart
/etc/init.d/saslauthd restart

บทความที่เกี่ยวข้อง

Backup, check space and delete old file backup

1.Backup file

------------------------script backup.sh---------------------------------------------------------
###mount -o username=administrator,password=xxxx //IP address/Path /mnt/backup

LISTS="/home"
BACKUPLAST=2
BACKUP_PATH="/media/Backup"

DAY_DELETE=`date -d "+%Y%m%d"`
DAY_BACKUP=`date "+%Y%m%d"`
DELETE="${BACKUP_PATH}/${DAY_DELETE}.tar.bz2"
BACKUP="${BACKUP_PATH}/${DAY_BACKUP}.tar.bz2"

if [ -s ${DELETE} ]
then
   rm -rf ${DELETE}
fi
if [ -s ${BACKUP} ]
then
   rm -rf ${BACKUP}
fi
#tar cfvz ${BACKUP} ${LISTS}
tar -jPcf ${BACKUP} ${LISTS}

--------------------------------------------------------------------------------------------------

2. Check space and send mail every day
-------------------------checkspace.sh----------------------------------------------------------
df -H >checkspace.txt
echo "Check disk space complete" | mutt -a "checkspace.txt" -s "Check disk space complete" -- email@domain.com
---------------------------------------------------------------------------------------------------

3. delete old file backp
------------------------script removeoldfilebackup.sh--------------------------------------------
find /media/Backup/ -type f -mtime +7 -name '*.bz2' -execdir rm -- {} +
ls -lt /media/Backup > listbackup.txt
echo "Delete old file backup complete" | mutt -a "listbackup.txt" -s "Delete old file backup complete" -- email@domain.com
-----------------------------------------------------------------------------------------------

* find /location/* -type f -mtime +7 -exec rm -rf {} \;

* find /location/findname.log -type f -mtime +7 -exec rm -rf {} \;

4.crontab -l
0 */3 * * * /sbin/service dovecot reload
0 0 * * * /root/./backup.sh
0 4 * * * /root/./checkspace.sh
0 5 * * * /root/./removeoldfilebackup.sh

Reference
removing-files-older-than-7-day

Reset surface to default

Reference: Microsoft
Reset from the Windows sign-in screen

Notes

• If you’ve lost your password, you may not have to reset your Surface. See I forgot my password before
  performing these reset steps.
• If you don't have a keyboard connected to your Surface Pro or Surface 3, you'll need to use the on-screen keyboard to do these reset steps. From the Windows sign-in screen, tap or click the Ease of access icon in the lower-left corner of the screen, and then tap or click On-Screen Keyboard.

Step 1:	From the Windows sign-in screen, tap or click Power in the lower right corner of the sign-in screen.
Step 2:	Press and hold the Shift key. (If you're using the on-screen keyboard, tap or click the Shift key.)
Step 3:	While the Shift key is still pressed, tap or click Restart. If you get the prompt Restart anyway, tap or click Restart anyway. After Surface restarts, the Choose an option screen will appear.
Step 4:	Tap or click Troubleshoot.
Step 5:	Tap or click Reset your PC. Surface restarts and the Surface logo displays while Windows prepares to reset your Surface.
Step 6:	On the Reset your PC screen, tap or click Next.
Step 7:	Choose either Just remove my files or Fully clean the drive. The option to clean the drive is more secure, but takes much longer. For example, if you are recycling your Surface, you should choose to clean the drive. If you are keeping your Surface, you just need to remove your files.
Step 8:	Tap or click Reset. Surface restarts and the Surface logo displays while the reset process completes (this can take several minutes).

create usb boot with dd command

Format disk to fat32 before create usb boot
format fat32 command
sudo mkfs.vfat -I -F32 /dev/sdx
format NTFS
sudo mkfs.ntfs /dev/sdx
format ext4
sudo mkfs.ext4 -L label /dev/sdx
sudo mkfs.ext4 -F -O ^64bit -L 'Label disk' '/dev/sdx1'

#fdisk -l
build usb boot
#

#sudo umount /dev/sdc
#dd if=ubuntu-mate-14.04.2-LTS-desktop-i386.iso of=/dev/sdc bs=1M
or
#sudo dd if=./ubuntu.iso of=/dev/sdd bs=8129

#complete
1076+1 records in
1076+1 records out
1128595456 bytes (1.1 GB) copied, 220.276 s, 5.1 MB/s

if= source file iso, img 
of= flash drive
bs= Read & Write rate

#clone to image file
dd if=/dev/sdb of=/home/hades/Downloads/OS/hilen-boot.img bs=1M
7633+1 records in
7633+1 records out

8004304896 bytes (8.0 GB) copied, 370.764 s, 21.6 MB/s


แบบมี status ว่าทำได้กี่ %
1.ต้องติดตั้ง package pv dialog (sudo apt-get install pv dialog)
#(pv -n lubuntu-15.04-alternate-i386.iso | dd of=/dev/sdb bs=1M) 2>&1 | dialog --gauge "Running dd command (copyfile), please wait..." 10 70

2. pv -tpreb lubuntu-15.04-alternate-i386.iso | dd of=/dev/sdb bs=1M
#pv -tpreb lubuntu-15.04-alternate-i386.iso | dd of=/dev/sdb bs=1M
 651MB 0:01:30 [7.18MB/s] [=================================================================>] 100%            
0+5209 records in
0+5209 records out
682622976 bytes (683 MB) copied, 92.9512 s, 7.3 MB/s

3. sudo dd if=file.iso |pv| sudo dd of=/dev/sdX bs=1M

* สามารถ Clone disk to disk ได้ด้วย
* dd มันอ่านข้อมูลเป็น block แล้วก้อปไปใส่อีกตัวตรงๆ
ถ้าไฟล์เล็กๆเยอะๆ dd จะไวกว่ามาก เพราะมันไม่สนจำนวนไฟล์ มันอ่านข้อมูลเป็น block จาก hdd เลย
ข้อเสียคือมันจะทำทั้งลูก ต่อให้มีข้อมูลอยู่ 1kb มันก็ทำทั้งลูกอยู่ดี

clear save password samba on ubuntu

when you login share file and save permanent password user and then you want to clear user and password
How to do?

#cd /home/user/.gnome2/
#mv keyrings keyrings_mv   --> clear user and password

reset password root mysql

run command folowing

1. service myql stop
2. mysqld_safe --skip-grant-tables
3.mysql --user=root mysql
4.
update user set Password=PASSWORD('new-password') where user='root';
flush privileges;
exit;

5. service mysql restart6. test login myql -uroot -p7. test login on phpmyadmin

----------------------------------------------------------------
How to reset the root password for mysql:
Stop mysql:
1. service mysql stop

Run mysql with skip grants to be able to login without any password
2. mysqld_safe --skip-grant-tables &

Login as root
3. mysql -u root

4. mysql commands:
mysql> use mysql;
mysql> update user set password=PASSWORD("NEW-ROOT-PASSWORD-HERE") where User='root';
mysql> flush privileges;
mysql> quit

Stop mysql
5. service mysql stop

Start mysql normally:
6. service mysql start

Try to login using your new password:
7. mysql -u root -p     

Reference site

howtoforge

on Ubuntu

remmina Protocol plugin RDP is not installed (Kali)

1. after insall remmina
    1.1 don't forget install remmina-plugin-rdp

2. just install package libfreerdp1_1.0.1-1.1+deb7u3_amd64.deb3
3. see picture click amd64
 

4. shoose Asia see picture

5. install package : sudo dpkg -i libfreerdp1_1.0.1-1.1+deb7u3_amd64.deb

Install line on kali, ubuntu

how to install line on ubunt

1. Install wine
#apt-get install wine
2. Downlaod line
gotot website: db.tt/G5doCA01
save file LINE.zip
unzip file LINE.zip and copy folder LINE to /home/youehome/.wine/drive_c/Program Files/
3. Edit line script
#cd /usr/bin
#mv line line_mv
#vim line

-------------------------------------------Create new script ---------------------------------------------

#!/bin/bash
wine /home/yourhome/.wine/drive_c/Program\ Files/LINE/Line.exe 2>&1
/dev/null


------------------------------------------Save and exit --------------------------------------------------
Change permission
#chomod u+x line
#chmod o+x line
4. Create short cut to desktop (see picture)
for create short cut ubuntu 15.04 read here!

* Icone line

3. add font thai
4. add font thai 2
copy font thai to drive /home/my user/.wine/drive_c/windows/

sed -i "s/font-family:[^;]*;/font-family:'tahoma';/g" ~/.wine/drive_c/Program\ Files/LINE/res/skin/basic/css/*

20 thing to do after install kali linux

Read on this page

check disk Wmware

Check on VMWare

1. Command #esxcli storage core device list ตรวจสอบ Hard disk ในเครื่อง

t10.ATA_____ST31500341AS________________________________________9VS2TVTN

Display Name: Local ATA Disk (t10.ATA_____ST31500341AS________________________________________9VS2TVTN)

Has Settable Display Name: true

Size: 1430799

Device Type: Direct-Access

Multipath Plugin: NMP

Devfs Path: /vmfs/devices/disks/t10.ATA_____ST31500341AS________________________________________9VS2TVTN

Vendor: ATA

Model: ST31500341AS

Revision: CC1H

SCSI Level: 5

Is Pseudo: false

Status: on

Is RDM Capable: false

Is Local: true

Is Removable: false

Is SSD: false

Is Offline: false

Is Perennially Reserved: false

Queue Full Sample Size: 0

Queue Full Threshold: 0

Thin Provisioning Status: unknown

Attached Filters:

VAAI Status: unknown

Other UIDs: vml.0100000000202020202020202020202020395653325456544e535433313530

Is Local SAS Device: false

Is Boot USB Device: false

2. Command #esxcli storage core device smart get -d t10.ATA_____ST31500341AS________________________________________9VS2TVTN

Parameter Value Threshold Worst

---------------------------- ----- --------- -----

Health Status OK N/A N/A

Media Wearout Indicator N/A N/A N/A

Write Error Count N/A N/A N/A

Read Error Count 104 6 99

Power-on Hours 59 0 59

Power Cycle Count 100 20 100

Reallocated Sector Count 100 36 100

Raw Read Error Rate 104 6 99

Drive Temperature 39 0 59

Driver Rated Max Temperature 61 45 41

Write Sectors TOT Count 200 0 200

Read Sectors TOT Count N/A N/A N/A

Initial Bad Block Count 100 99 100

3. Check all disk with command: /usr/lib/vmware/vm-support/bin/smartinfo.sh

#/usr/lib/vmware/vm-support/bin/smartinfo.sh 
SMART Information for disks.

Device:  t10.ATA_____KINGSTON_SV300S37A60G___________________50026B774507282B____
Errors: 
Error getting Smart Parameters: CANNOT open device


Device:  t10.ATA_____ST31500341AS________________________________________9VS3YGKG
Errors: 
Error getting Smart Parameters: CANNOT open device


Device:  t10.ATA_____WDC_WD20EARX2D00PASB0_________________________WD2DWCAZAD763430
Parameter                     Value  Threshold  Worst
-----------------------------------------------------
Health Status                 OK     N/A        N/A
Media Wearout Indicator       N/A    N/A        N/A
Write Error Count             N/A    N/A        N/A
Read Error Count              200    51         200
Power-on Hours                64     0          64
Power Cycle Count             100    0          100
Reallocated Sector Count      200    140        200
Raw Read Error Rate           200    51         200
Drive Temperature             110    0          90
Driver Rated Max Temperature  N/A    N/A        N/A
Write Sectors TOT Count       200    0          200
Read Sectors TOT Count        200    0          200

Initial Bad Block Count       N/A    N/A        N/A

Ref.https://communities.vmware.com/thread/451779