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Fax DepositDox physical files, and it digitizes and stores them as searchable PDFs. More: continued here
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The installation of Websense Reporting Tools includes a Log Server component that logs filtering data to a Microsoft SQL Server database. When Log Server is installed, the Websense installer prompts you for SQL Server connection information. If the connection values are inaccurate, or if the SQL Server instance uses a port other than the default, the [...]
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Note You must be logged on as an administrator or a member of the Administrators group to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure. Click Start, click Control Panel, click Performance and Maintenance, clickAdministrative Tools, and then double-click Services. In the Details pane, click the [...]
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It is possible to instruct history to ignore a command when executing a command. # export HISTCONTROL=ignorespace # ls -ltr # pwd # service httpd stop [Note that there is a space at the beginning of service] # history | tail -3 67 ls -ltr 68 pwd 69 history | tail -3
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Worries that the notorious Conficker worm will somehow rise up and devastate the Internet on April 1 are misplaced, security experts said Friday. Conficker is thought to have infected more than 10 million PCs worldwide, and researchers estimate that several million of these machines remain infected. If the criminals who created the network wanted to, [...]
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To allow all users login screen access via a vnc-client to the system, you can use vnc-ltsp-config and xinetd. When a vnc-client connects to one of the configured ports, the user will be given a default standard login screen. The sessions will *not* be persistent. When a user logs out, the session is gone. Note: [...]
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This article uses postfix as the mail transport agent (MTA), as opposed to sendmail, the default MTA for CentOS. Dovecot is used to allow users to access their email by either imap or pop protocols. We assume a domain name of example.com which should be changed by the reader and can be either a real [...]
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This allows full access through our firewall to certain trusted sources (host PCs). Now we’ll look at how we can filter against protocols and ports to further refine what incoming packets we allow and what we block. Before we can begin, we need to know what protocol and port number a given service uses. For [...]
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We will use an example based approach to examine the various iptables commands. In this first example, we will create a very simple set of rules to set up a Stateful Packet Inspection (SPI) firewall that will allow all outgoing connections but block all unwanted incoming connections:
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Working with iptables from the command line requires root privileges, so you will need to become root for most things we will be doing. Iptables should be installed by default on all CentOS 3.x, 4.x and 5.x installations. You can check to see if iptables is installed on your system by: $ rpm -q iptables [...]
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I can use tcpdump to verify that encryption is working. Here is what a plain unencrypted POP mail session looks like. This is an abbreviated example showing only the initial three-way TCP handshake. You can do this yourself by firing up tcpdump, then checking mail. Ctrl+C stops it: # tcpdump port 110 15:04:49.050227 windbag.34348 > [...]
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Replication enables data from one MySQL database server (called the master) to be replicated to one or more MySQL database servers (slaves). Replication is asynchronous – your replication slaves do not need to be connected permanently to receive updates from the master, which means that updates can occur over long-distance connections and even temporary solutions [...]
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Access to the news server can be open to everyone, or it can require user authentication. The NNTP service allows fine tuning of security policies and is capable of handling a large number of virtual domains and independent server instances on a single computer. The NNTP service is not installed by default. You must install [...]
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Virtual Hosting allow web servers to host more than one website on a sing machine. This is how sharing hosting works. I become pretty handy as well while develloping different web project on the same machine and allows you to access to your local repository using addresses such as http://dev.mysite.com instead of http://localhost/~myuser/myproject/ :) . [...]
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