The Network Administrator

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VMWare ESX — The parent virtual disk has been modified since the child was created

MWahl | September 29, 2010 | 9:48 pm

There is a great article on this here http://www.dasblinkenlichten.com/?p=258

I also used this information for ESX 3.5 SSH.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=8375637

http://www.vm-help.com/esx/esx3i/ESXi_enable_SSH.php

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Have a virus!? Do a little research to find out exactly what it is here…

MWahl | September 29, 2010 | 9:26 pm

The Symantec Anti-virus Research Center

http://www.symantec.com/security_response/index.jsp

Also check this link which contains the removal tools, tips, etc

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Windows tools
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Exchange 2010 PowerShell to sort user mailboxes by size

MWahl | September 27, 2010 | 9:51 pm

Open Your Exchange Management Shell and issue the script below


Get-MailboxStatistics -Server SERVERNAMEGOESHERE | Sort-Object -Property TotalItemSize | `
Format-Table DisplayName,TotalItemSize

Or descending


Get-MailboxStatistics -Server SERVERNAMEGOESHERE | Sort-Object -Property TotalItemSize -Descending | `
Format-Table DisplayName,TotalItemSize

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Microsoft Exchange, Scripts
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Make your WordPress website mobile today

MWahl | September 22, 2010 | 9:04 pm

Today many people are using their mobile phones to browse websites. This trend will only continue to grow in the future. So take a few minutes and make sure your website is mobile friendly for all the smartphones and iPads out there.

I downloaded and installed this wordpress plug-in, http://wordpress.org/extend/plugins/wordpress-mobile-edition


1.Drop the wp-mobile.php file in your wp-content/plug-ins directory
2.Drop the carrington-mobile-(version #) directory in your wp-content/themes directory
3.Click the 'Activate' link for WordPress Mobile Edition on your Plugins page (in the WordPress admin interface)

It was easily to install and required no complex setup or configurations. Just set it and forget it.

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Imaging a Linux workstation or Server

MWahl | September 17, 2010 | 9:36 am

This seems simply enough right…? I spent a day or so looking for a way to image an linux workstation and to add to the complexity I didnt have a large enough external hard drive so i had to do this over the network to a server share. Below are the steps I used.

1. Download a ubuntu live cd http://www.ubuntu.com/desktop/get-ubuntu/download

2. Next boot the workstation you wish to image using the ubuntu live cd, dont install ubuntu, just choose to try it out.

3. Fire up a terminal window (Applications > Accessories > Terminal)
In the command window we will create a mount to a server share to dump the image to.

Type sudo apt-get install smbfs


Type sudo mkdir /media/windows_share


Type sudo mount -t smbfs //192.168.1.250/shared_folder/
/media/windows_share -o username=NamesGoesHere,password=PasswordHere

4. All mounted drives should be in /media,

so we’ll type cd /media/windows_share

5. Now to take the image

type sudo dd if=/dev/sda of=./computer.img

6. You can restore the image by following steps 2 through 4 above on the computer you wish to have the image pushed onto.
Replace step 5 with the command

sudo dd if=./computer.img of=/dev/sda

I should also point out that it would be good practice to wipe the destination hard drive before pushing the image on it. This can be done from the terminal window using the command

sudo dd if=/dev/urandom of=/dev/sda

Also please note in my case the hard drive being imaged was sda, your drive might be different and you can check by issuing the command

fdisk -l

from a terminal window and then looking for the correct hard drive to be imaged.

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Wake On Lan over VPN

MWahl | September 13, 2010 | 8:24 pm

I had an issue where I wanted to leave a server off and only power it on when I needed it. I configured a Cisco Pix 501 as my vpn end point. I was able to establish the vpn tunnel and access my entire lan. I was not able to use WoL to wake up the server. I read a Cisco article that told me I simply needed to add a static route from my public ip (outside interface) to the ip of my server and that was it.


From the Pix cli issue
pix501(config)#static (inside,outside) 10.1.1.4 45.23.74.55 netmask 255.255.255.255 0 0

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