When it is necessary to share files between multiple devices and persons OwnCloud is a good alternative for Dropbox.

The open-source software that also supports WebDAV can also be installed on a managed web server - for this purpose the project offers a installation script which is transfered to the server using FTP: …

To keep contacts and calendars up-to-date between multiple devices well-known cloud services like Apple iCloud or the Google services are often used.

It's no doubt that this is a very comfortable solution - but in my opinion you shouldn't place trust in public cloud services. I personally avoid cloud services and try …

While creating a VMFS storage I received the following error yesterday:

1Call "HostDatastoreSystem.QueryVmfsDatastoreCreateOptions" for object "ha-datastoresystem" on ESXi "xxx.xxx.xxx.xx" failed.

First I thought the freshly created logical drive on my HP RAID contorller had a failure - but this …

Use the following commands to completely disable IPv6 under RHEL / CentOS up to version 6:

1# echo "options ipv6 disable=1" > /etc/modprobe.d/ipv6.conf
2# chkconfig ip6tables off
3# shutdown -r now

A module parameter prohibits IPv6 functionality after the next reboot. If this value wasn't set, some services …

txqueuelen is one of many configurable networking parameters. This paremeter defines the queue size in which the kernel stores data before it is sent over the network. By default this parameter has a value of 1000 - depending on your application you might want to increase this value using ifconfig or ip:

1# ifconfig …

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  decoding="async"
  alt="OpenVPN-Profile"
  
    class="image_figure image_internal image_unprocessed"
    src="https://cstan.io/images/2013/05/1-Profile.jpg"
  
  
/>

</picture>

OpenVPN …

On RHEL or CentOS 5.3 it is possible that a noticed default gateway is ignored. In this case the routing table doesn't contain any appropriate entry...

1# netstat -r|grep default

...even if the gateway was noticed both in the main network configuration...

1# cat /etc/sysconfig/network
2...
3GATEWAY=10.24.36.1

...and …