mount kvm disk qcow on linux

Posted on December 22, 2015June 25, 2018 by coder

# Enabling mounting.

sudo modprobe nbd max_part=8

sudo qemu-nbd --connect=/dev/nbd0 /mnt/kvm/wordpress-sites.qcow2

sudo fdisk /dev/nbd0 -l

sudo mount /dev/nbd0p1 /mnt/somepoint/

sudo umount /mnt/somepoint/

sudo qemu-nbd --disconnect /dev/nbd0

# Enabling mounting.

sudo modprobe nbd max_part=8

sudo qemu-nbd --connect=/dev/nbd0 /mnt/kvm/wordpress-sites.qcow2

sudo fdisk /dev/nbd0 -l

sudo mount /dev/nbd0p1 /mnt/somepoint/

sudo umount /mnt/somepoint/

sudo qemu-nbd --disconnect /dev/nbd0

Example 2:

losetup /dev/loop0 raw-image-file.raw

##
# kpartx: 
#  Recognise and activate partitions in the image:
kpartx -a /dev/loop0

##
# Check partitions available to this image under /dev/mapper/loop0*
# ls /dev/mapper/loop0*
/dev/mapper/loop0p1 /dev/mapper/loop0p2 /dev/mapper/loop0p3 /dev/mapper/loop0p4 /dev/mapper/loop0p5 /dev/mapper/loop0p6

##
# mount each partition to a mount point: 

mount /dev/mapper/loop0p1 /mnt

##
# umount and delete created  objects. 

umount /mnt
kpartx -d /dev/loop0
losetup -d /dev/loop0

losetup /dev/loop0 raw-image-file.raw

# kpartx:

# Recognise and activate partitions in the image:

kpartx -a /dev/loop0

# Check partitions available to this image under /dev/mapper/loop0*

# ls /dev/mapper/loop0*

/dev/mapper/loop0p1 /dev/mapper/loop0p2 /dev/mapper/loop0p3 /dev/mapper/loop0p4 /dev/mapper/loop0p5 /dev/mapper/loop0p6

# mount each partition to a mount point:

mount /dev/mapper/loop0p1 /mnt

# umount and delete created objects.

umount /mnt

kpartx -d /dev/loop0

losetup -d /dev/loop0

Ssh root login allow linux

Posted on December 22, 2015 by coder

nano /etc/ssh/sshd_config
FROM:
PermitRootLogin without-password
TO:
PermitRootLogin yes

nano /etc/ssh/sshd_config

FROM:

PermitRootLogin without-password

TO:

PermitRootLogin yes

# /etc/init.d/ssh restart

1	# /etc/init.d/ssh restart

ISP Config

Posted on December 3, 2015December 3, 2015 by coder

https://www.howtoforge.de/anleitung/der-perfekte-server-debian-squeeze-debian-6-0-mit-bind-dovecot-ispconfig-3/

http://lists.sip-router.org/pipermail/sr-users/2014-March/082225.html

http://www.ictinnovations.com/content/kamailio-elastix-installation-and-integeration

How to Rename Eth0 Network Interface Card Name [ Udev ]

Posted on December 3, 2015December 3, 2015 by coder

#MAC address of the Ethernet device

ifconfig -a | grep -i --color hwaddr

#Sample outputs:
>
eth0      Link encap:Ethernet  HWaddr ku:ta:yz:or:lu:.c
lan0      Link encap:Ethernet  HWaddr 1a:c1:00:ed:5d:99
wlan0     Link encap:Ethernet  HWaddr 00:21:6a:ca:9b:33

# !!!Step #1: Find out the MAC address of the Ethernet device

Type the following command:
# ifconfig -a | grep -i --color hwaddr

Sample outputs:

eth0      Link encap:Ethernet  HWaddr b8:ac:6f:65:31:e5
lan0      Link encap:Ethernet  HWaddr 4a:71:40:ed:5d:99
wlan0     Link encap:Ethernet  HWaddr 00:21:6a:ca:9b:10
Note down the MAC address.

# >>  change the name eth0 as wan0

# To rename eth0 as wan0, edit a file called 70-persistent-net.rules in /etc/udev/rules.d/ directory, enter:
# vi /etc/udev/rules.d/70-persistent-net.rules

The names of the Ethernet devices are listed in this file as follows:

 
# PCI device 0x14e4:0x1680 (tg3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="ku:ta:yz:or:lu:co", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
 
Locate and identify the line with the NIC from step 1 (look for the MAC address). It may look like above. In this example, the interface eth0 will be renamed to wan0 (change NAME="eth0" to NAME="wan0"):

 
# PCI device 0x14e4:0x1680 (tg3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="ku:ta:yz:or:lu:co", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="wan0"
 
Save and close the file. Reboot the system to test changes:
# reboot

#! Rename eth0 as wan0

# >>  change NAME="eth0" to NAME="wan0"):

# Save and close the file. Reboot the system to test changes:
reboot

# Checking 
# ifconfig -a
# ifconfig wan0
# ifconfig -a | less
# ip addr show

#MAC address of the Ethernet device

ifconfig -a | grep -i --color hwaddr

#Sample outputs:

eth0 Link encap:Ethernet HWaddr ku:ta:yz:or:lu:.c

lan0 Link encap:Ethernet HWaddr 1a:c1:00:ed:5d:99

wlan0 Link encap:Ethernet HWaddr 00:21:6a:ca:9b:33

# !!!Step #1: Find out the MAC address of the Ethernet device

Type the following command:

# ifconfig -a | grep -i --color hwaddr

Sample outputs:

eth0 Link encap:Ethernet HWaddr b8:ac:6f:65:31:e5

lan0 Link encap:Ethernet HWaddr 4a:71:40:ed:5d:99

wlan0 Link encap:Ethernet HWaddr 00:21:6a:ca:9b:10

Note down the MAC address.

# >> change the name eth0 as wan0

# To rename eth0 as wan0, edit a file called 70-persistent-net.rules in /etc/udev/rules.d/ directory, enter:

# vi /etc/udev/rules.d/70-persistent-net.rules

The names of the Ethernet devices are listed in this file as follows:

# PCI device 0x14e4:0x1680 (tg3)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="ku:ta:yz:or:lu:co", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

Locate and identify the line with the NIC from step 1 (look for the MAC address). It may look like above. In this example, the interface eth0 will be renamed to wan0 (change NAME="eth0" to NAME="wan0"):

# PCI device 0x14e4:0x1680 (tg3)

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="ku:ta:yz:or:lu:co", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="wan0"

Save and close the file. Reboot the system to test changes:

# reboot

#! Rename eth0 as wan0

# >> change NAME="eth0" to NAME="wan0"):

# Save and close the file. Reboot the system to test changes:

reboot

# Checking

# ifconfig -a

# ifconfig wan0

# ifconfig -a | less

# ip addr show

raspery pi install oracle java

Posted on September 28, 2015 by coder

sudo apt-get update

sudo apt-get install oracle-java7-jdk

rdesktop sound with remote client

Posted on September 20, 2015September 20, 2015 by coder

Richtung UND funktioniert:

rdesktop 192.168.0.1 -d lindom -u Benutzername -p Passwort -n tclient01 -a 16 -k de -g 1024x768 -r sound:local -r disk:tmp=/tmp
Erklärungsversuch:

Richtung UND funktioniert:

rdesktop 192.168.0.1 -d lindom -u Benutzername -p Passwort -n tclient01 -a 16 -k de -g 1024x768 -r sound:local -r disk:tmp=/tmp

Erklärungsversuch:

Intrusion defense systems (IDS)

Posted on September 14, 2015September 14, 2015 by coder

Intrusion detection and prevention systems (IDPS)

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