Network Security

If you've forgotten your Windows 2008 administrator password, you can access the account by changing the password using another account with privileges. The account can be another administrator...

When a browser accesses an SSL-protected website, the browser automatically sends a request to the server, asking for the SSL Public Key. The browser processes this Public Key and sends a reply...

According to Microsoft, specific Certificate Authority is required to perform certain tasks in Microsoft Exchange Server. Among these tasks is Active Directory Replication based on inter-site...

As a network administrator, you may hear complaints regarding errors in receiving and/or sending messages. One of the reasons this may occur is that the email sender or receiver may have that...

A VPN is a perfect solution for keeping data secure between the office and home. Since transferring data over the Internet is often insecure, a VPN provides an encrypted tunnel that allows any...

SSH is a popular protocol used mainly by Linux and Unix users to connect from one computer to another. The main use of SSH is to establish an encrypted connection so that nobody in between can...

Microsoft Internet Explorer defines a domain as "a collection of computers on a network that share a common database and security policy. A domain is administered as a unit with common rules and...

In general, most home routers do not support website filtering. It is possible, however, to do this with the assistance of a free service called OpenDNS. Home routers generally function as three...

Backing up files is a common task to schedule using a cron job, and frequently this is done by using rsync in conjunction with ssh. In this article, I'll show you how to setup ssh for auto-login,...

On the Internet, users frequently need to enter a password to login to websites. The website's server stores the letters or numbers that you entered in an encrypted format. To encrypt your...

One of the major role of a systems or network administrator is to secure the network. This can be done by using not only passwords and encryption software, but also by adding firewalls and...

A user profile configured on the Windows Server 2003 typically contains the desktop settings (i.e., icons and color options), environment and preference settings, installed applications, and other...

DNS (Domain Naming Service) runs on a server designated to resolve computer's IP addresses into a more easily readable, plain name. When integrated with Active Directory it adds a measure of...

SELinux is a great tool that should be used on every publicly accessible web server, and on any corporate server where you have a need to secure the data. SELinux secures services until you tell...