Friday, January 25, 2013

IPERF

Description

Iperf was developed by NLANR/DAST as a modern alternative for measuring maximum TCP and UDP bandwidth performance. Iperf allows the tuning of various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, datagram loss.
HOW TO USE

Iperf on Windows

Posted by & filed under Article.

Iperf is a neat little tool with the simple goal of helping administrators measure the performance of their network. Worthy of mention is the fact that it can measure both TCP and UDP performance on a network. Iperf is cross platform software and open source.
You can download Iperf.exe from:
Iperf.exe Linhost.info
or
Iperf.exe Ucf.edu
Link updated on 12/30/2010
We will be making use of the command line, do not fear the command line Iperf is a simple tool to use.
Say I want to test the available bandwidth between a server(Windows Server 2008) and a client workstation(Windows 7). Iperf will try to move as much data as possible using the available link in order to conduct the test.
iperf-server-client-windows

Instructions

Download the Iperf executable and place the file on any directory you wish, my web browser(Firefox) places all downloaded files on the Download directory which is where I will be executing Iperf from.
Note:You will need to open port 5001 on the Iperf server.

Server Setup

Go to Start > All Programs > Accessories > Command Prompt
command-promptWith the command line prompt open type
cd Dowloads
or the location where the Iperf executable resides.
cd-downloadNow that you are in the same directory as Iperf type
iperf -s
to start the Iperf server. If you look at the screen Iperf listens on port 5001 you may have to open port 5001 on your firewall.
iperf-server

Client Set Up

Imitating the steps above execute Iperf in the same manner, but this time we are going to give the Iperf client different instructions. On the Iperf client command line type
iperf -c 192.168.1.51
. This will be our client and we are telling Iperf the server is located at 192.168.1.51.
iperf-cGive Iperf some time to test the connection, after the test is done Iperf will present the results.
iperf-test-doneThe results are easy to understand in this case Iperf managed to transfer 113 Mbytes at 94.5 Mbits/s, the results will changed when used on a busy network which is where Iperf will reveal the amount of available bandwidth in the network

Friday, January 18, 2013

Thursday, January 3, 2013

SysTools Folder Key

Tool to Lock and Unlock Folders
Lock folder files against getting accessed by any unauthorized person. Protect folders with SysTools Folder Key™ a Windows platform Folder Key utility which protect folder files from getting opened without unlocking folders first. Folder Key™ allows you to lock folders with password or without password. Password protected folder/files can’t be accessed until password to unlock the folder is provided to software. With SysTools Folder Key™ Folder lock/unlock freeware utility you can also protect folders without you require any password to lock folder later unlocking the locked folders from software itself. No password Folder Keying strategy comes effective when you don’t want to remember ad-hoc passwords of various system folders locked by you. Start; Protect folder and file by SysTools Folder Key™ Folder lock/unlock freeware software free tool.


DiskCryptor

DiskCryptor is an open encryption solution that offers encryption of all disk partitions, including the system partition. The fact of openess goes in sharp contrast with the current situation, where most of the software with comparable functionality is completely proprieatary, which makes it unacceptable to use for protection of confidential data. Originally DiskCryptor was conceived as a replacement for DriveCrypt Plus Pack and PGP Whole Disk Encryption (WDE). Now, however, the aim of the development of the project is to create the best product in its category. Moreover, in the future, considerable effort will be devoted to the creation of detailed documentation, explaining the internal mechanics of the program, which would be the best confirmation and demonstration of its security.
DiskCryptor releases from 0.1 to 0.4 were fully compatible with TrueCrypt, as they used a corresponding partition format and encrypted data with AES-256 algorithm in LRW mode. Starting from DiskCryptor 0.5, the program relies upon its own partition format, developed specifically for encrypting partitions with data on them, as TrueCrypt format has been originally meant for creation of empty volumes. That move allowed for an increase in DiskCryptor's stability, eliminated many problems associated with file systems, and created an optimal format for further development of the program.

Program Features

  • Support for encryption algorithm AES, Twofish, Serpent, including their combinations.
    • Transparent encryption of disk partitions.
    • Full support for dynamic disks.
    • Support for disk devices with large sector size (important for hardware RAID operation).
  • High performance, comparable to efficiency of a non-encrypted system.
  • Broad choice in configuration of booting an encrypted OS. Support for various multi-boot options.
    • Full compatibility with third party boot loaders (LILO, GRUB, etc.).
    • Encryption of system and bootable partitions with pre-boot authentication.
    • Option to place boot loader on external medium and to authenticate using the key medium.
    • Support for key files.
  • Full support for external storage devices.
    • Option to create encrypted CD and DVD disks.
    • Full support for encryption of external USB storage devices.
    • Automatic mounting of disk partitions and external storage devices.
  • Support for hotkeys and optional command-line interface (CLI).
  • Open license GNU GPLv3.

Supported OS

Operating System Service Pack Bitness
Windows 2000* SP0–SP4 x86
XP SP0–SP3 x86, x64
Server 2003 SP0–SP2 x86, x64
Vista SP0–SP2 x86, x64
Server 2008 SP0–SP2 x86, x64
7 x86, x64
Server 2008 R2 x64

Freemake Video Converter

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