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Windows 2008 R2 RDS: Log Off a User from a Session

If you are an administrator, you can log off a user from a session (for example, if the user has an session has crashed) in Remote Desktop Services Manager by using the Log Off action.

Follow these steps to log the user off:

  1. In Remote Desktop Services Manager, on the left pane, click the Remote Desktop Session Host server on which the user session is running.

  2. On the Users tab, right-click the user that you want to log off, and then click Log Off.

  3. Click OK to log off the user from the session.

Monday, 22 February 2016 11:12
 

Ubuntu server: change timezone

ubuntu-logoQ. How do I update the timezone on an Ubuntu Server?

A. Two easy steps:

NB: This will overwrite whatever you've had there before:

~# sudo echo "America/New_York" > /etc/timezone

~# sudo dpkg-reconfigure --frontend noninteractive tzdata

Friday, 04 September 2015 07:28
   

Firefox: Error code: ssl_error_weak_server_ephemeral_dh_key

firefox-logoStarting with Firefox v39 you will receive the following errors when accessing secure websites with a weak ephemeral Diffie-Hellman key:

An error occurred during a connection to helios.alt-itc.ca:8443. SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: ssl_error_weak_server_ephemeral_dh_key)

How to resolve this:

1) Ask the webmaster to correct this on the server side (if you have such an option).

2) Perform the following:

i) In the address field of Firefox, type in: 

about:config

ii) Click "I'll be careful, I promise"

iii) Find the following keys (type this into the search field):

security.ssl3.dhe_rsa_aes_128_sha

Click on "true" under "Value" to make it "false"

Find the next key:

security.ssl3.dhe_rsa_aes_256_sha

Click on "true" under "Value" to make it "false"

Thursday, 27 August 2015 19:35
   

Find serial number in Linux

linux 128Q. I'm looking for a serial number of the system and motherboard (eg. Dell or HP), is there any way to find that remotely?

A. Yes, there is. In many cases a little tool called dmidecode can be used.

Here's the synopsis from the man pages:

dmidecode is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. Thanks to this table, you can retrieve this information without having to probe for the actual hardware. While this is a good point in terms of report speed and safeness, this also makes the presented information possibly unreliable.

Wednesday, 22 July 2015 12:44
   

All about ScanPST (and ScanOST) tool

scanpst-iconQ. What is ScanPST.exe (and ScanOST.exe)?

A. ScanPST.exe is a tool to repair corrupted Outlook data files. It is useful to run when:

  • Outlook is slow to load and open files
  • Can't drag and drop emails or folders
  • Can't open email

It works equally good on repairing PST and OST (exchange data file).

Tuesday, 28 April 2015 07:58
   

Zentyal - default mysql root password

Q. Where do I find the default password for MySQL in Zentyal 3.5?

A. Run this code as root (or sudo):

echo $(sudo cat /var/lib/zentyal/conf/zentyal-mysql.passwd)

Friday, 17 October 2014 13:29
   

Add static route with destination

linux 128Q. I have 5 IP addresses from my provider, however, I can only access 1. When I try to access the others internally, they time out.

Another scenario: I would like to access a different subnet. (eg 192.168.0.0/24 from 192.168.1.0/24). How can this be done?

A. You need to add the gateway for particular IPs (or IP range) manually, to the routing table. (This exercise assumes that you are running a linux based router).

Thursday, 03 July 2014 14:00
   

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