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TCPdump Tutorial for Beginners

Tcpdump is a UNIX/Linux command line tool used to sniff and analyze network packets. Tcpdump offers similar functionality to that of the popular Wireshark application when used in command line mode and allows you to apply various filters to limit packet collection or packet output.

This is an introductory tutorial to tcpdump, filtering packets, as well as applying various filters and expressions.

http://dillonhale.com/blog/linux-tutorials/tcpdump-primer/

 

Open Cloud Alliance (OCA) - Some insights of its real strengths and benefits

The newly created Open Cloud Alliance is a network of software manufacturers, cloud service providers and system integrators providing a standardized cloud platform on the basis of open source software to offer flexibility and choice.

The formation of this alliance produced wide feedback in the press. Now, the initiator of this alliance, Peter Ganten, CEO of Univention, and Rafael Laguan, CEO of Open-Xchange and software partner of the alliance, both edited a post in their companies' blogs giving a personal insight on the real benefits and motives behind it.

Univention blog: http://blog.univention.com/open-cloud-alliance-just-another-cloud-alliance/

Open-Xchange blog: http://blog.open-xchange.com/2014/12/03/oca/

 

How install a Firewall on Linux and block IP's that bruteforce your system

Whenever I setup a Linux VPS, the first thing I do is install a firewall. I have noticed an increase in attacks on my servers, especially from China. I use
Config Server Firewall (CFG) and Login Failure deamon (LFD) because they are easy to set up and provide additional features like suspicious file reporting and system monitoring.

http://techarena51.com/index.php/how-to-configure-and-install-config-server-firewall-login-failure-daemon/

 

OK335xS Single board computer with two Ethernet Ports based on TI Sitara AM335x

Forlinx Embedded Technology Co.,Ltd (www.forlinx.net)is a global provider of ARM series single board computer.All products rangs from ARM9,ARM11,Cortex-A8 to Cortex-A9 platform.

OK335xS single board computer is one of  SDK board based on TI AM335x processor. after it is been launched, it has attracted many eyes from engineers all over the world.If you also have interests in it, please carefully check following contents for your reference.

OK335xS single board computer is a Cortex-A8 board based on TI AM3354 processor.It designs in the structure of CPU module(FET335xS)+ base board, and is used for commercial application(Temp range:-20℃~+70℃).and it support WinCE,Linux,Android/Starterware OS.

FET335xS CPU module is a high performance and cost effective module.It is designed as a  6-layer PCB board with the dimension of 42mm*52mm,and is with stamp hole interface.It integrates with 512M DDR3 RAM, and 256M SLC Nandflash for memory and support Ethernet,USB,UART,etc for connectivity.

and as for the base board, it measures 130mm*190mm and also support Ethernet, USB,CAN,485 bus function.Most importantly, OK335xS is the board with twoEthernet ports,which is a rare board based on Cortex-A8 platform.

335xS-1.jpg335xS-2.jpg

20140110012004_16852.jpg

 

The board  hardware resource are as follows:

FET335xS CPU Module Features

Key Parameters

CPU Processor: TI AM335X Cortex-A8

Main frequency: 800MHz

CPU Architecture Cortex-A8
RAM 512M DDR3
FLASH 256M SLC NandFlash
Operating Temperature -20℃~+70℃
Dimension 5.2cm*4.2cm
PMU TPS65217C
Voltage 5V
Humidity 10%~90%
OS Android2.3/4.2, Linux3.2, WinCE7.0
Pre-installed System Linux3.2
Graphics Processor Power VR SGX530

Function

USB 2.0 1x USB 2.0 HOST, 1x USB 2.0 OTG
Ethernet Dual Gigabit Ethernet
SD/MMC/SDIO 3x MMC
IIC 3x IIC
SPI 2x SPI
UART / IrDA 6x UART
GPIOs More than 20
ADC 8x ADC
Video Decoder Software codec
2D / 3D Support
Audio interface IIS interface port
JTAG Support
E2PROM Support (Used for encryption)

OK335xS Base Board Features

  SPI

1x SPI

  Power Supply

5V

  LED

1x LED

  LCD

Touch panel: support both resistive and capacitive;

Screen size: 4.3'', 5'', 7'', 8'', 10.4'' ;

Module: Support LCD to VGA module, LCD to LVDS module

  SD card slot

1x SD card slot

  WIFI

USB WiFi

  Serial Port

3x serial port

USB Device

1x USB 2.0

RTC

Support

  RS485

1x RS485, Multiplexed with profibus

  A/D

5x A/D

  IIC

1x IIC

  User Key

5x user key

Audio

3x Audio(1 for Phone, 1 for MIC, 1 for Linein)

  Boot Switch

Set to boot from SD card or NAND Flash

  Reset

Support

USB Host

4x USB 2.0 Host

  Ethernet

2x Gigabit Ethernet

  CAN

1x CAN

PWM

2x PWM( 1x backlight, 1x buzzer)

What's more, custom service based on TI AM335x is also provided.

If you hope to know the quotation and other details, please directly contact  This e-mail address is being protected from spambots. You need JavaScript enabled to view it .Thx.

 

Cloud Computing Security and Privacy: A Detailed Technical Analysis

Cloud computing is recognized as the most discussed topic in the IT industry while some people say it’s a game-changing technology. It mostly focuses on maximizing the efficiency of shared computing resources. It has completely changed the way of application usage. Application were running on personal computers before but cloud has made them available over Internet along with storage capacities and excellent computing power. Centralized data processing tasks, storages and access are the major features of cloud based infrastructure. While we have many potential benefits using cloud computing, we must take strong measures to protect the privacy and security. One must take serious considerations before moving their information to the cloud.

 

Security is the fact that implementation team should think first and act accordingly, particularly in cloud computing systems. These security goals are usually addressed for some specific event in the framework of the requirement definition and are part of the non-functional requirements to be met by the cloud vendor as well as by the cloud infrastrastructure itself. While planning for the security, three most important protection goals come in mind – confidentiality, integrity, authenticity.  Our practices must evolve around these three facts while the implementation of security resources to our cloud.

 

Privacy is also an important matter. If a client has the ability to login from any location to access data and applications, privacy compromising can be very much possible . Cloud computing companies must have clear roadmap to protect client privacy. There can be various ways to accomplish this. One way is to use strong authentication techniques such as complex usernames and passwords. Another is to implement an authorization format -- each user can access only their respective data and limited to that only.


Steps to address risks and challenges:

 

  • We must take care of Vendor’s transparency and distinct service level agreement

  • We must check if our possible vendor has adequate practices for privacy and confidentiality of personal, sensitive, or regulated data and information

  • Our hosting provider is legally and regulatory compliance

  • The possible hosting provider follows standard cyber security policies and support for incident forensics

  • If our hosting provider has the efficient records preservation, access, and management

  • Standard service availability and reliability

 

If we must get satisfactory answers for above questions in order to sign up for any cloud services. This will help us to make our cloud experience more result oriented. We will be successfully able to meet our goals that we set for cloud.

 

For more details: http://www.thesagenext.com

 

Open Source cloud services avoid lock-in

Univention's managing director Peter Ganten takes the new Active Directory Service by Amazon Web Services, which was launched last month, as an opportunity to talk about the problems companies can have by using big cloud service providers and continues with the advantages of using open source technology for the cloud which are: no vendor lock-ins, larger number of available software, high flexibility to change providers etc.

The article can be found at: http://blog.univention.com/open-source-cloud-services/

 

Forlinx industrial OK335xD single board computer now is launched

Forlinx, an embedded systems design and manufacturing company based in Hebei province in China, has announced OK335xD industrial single board computer powered by Texas Instruments Sitara AM335X processor, and which appears to be a high-end boards  more ports. Potential applications include communication devices, medical equipment, automotive computers, control panels, data acquisition devices, industrial control, industrial automation equipment, and more.

Forlinx_OK335xDOK335xD single board computer is composed of a CPU module (FET335xD), and a baseboard simply called “OK335xD Base Board”.

Listed specifications for FET335xD computer-on-module:

  • SoC – Texas Instruments Sitara AM3354 Cortex A8 processor @ 800MHz with PowerVR SGX530 GPU
  • System Memory – 512MB DDR3
  • Storage – 256MB SLC NAND Flash
  • Interfaces available via CoM connector:
    • 1x USB 2.0 Host; 1x USB2.0 OTG
    • Ethernet Dual Gigabit Ethernet
    • 3x MMC
    • 3x I2C, 2x SPI, 6x UART / IrDA
    • Various GPIO pins
    • 8x ADC
    • 2x CAN
    • LCD Interface
  • Misc – Watchdog (SP706SEN)
  • Power Supply – 5V; PMU – TPS65217C
  • Dimension – 46mm x 70mm
  • Temperature Range – -40℃~+85℃ (Operating)

Features listed for OK335xD baseboard:

  • Processor/Memory/Storage – Via FET335xD CoM
  • External Storage – 1x SD/SDHC card slot up to 32GB
  • Display
    • LCD interface with optional 4.3″, 5″, 7″, 8″, 10.4″ resistive or capacitive displays with various resolutions (480×272, 800×480, 800×600).
    • VGA is supported via an optional LCD to VGA board
  • Audio – 1x headphone jack, 1x MIC jack, 1x Line IN
  • Connectivity – 1x Gigabit Ethernet, connector for external SDIO Wi-Fi module
  • USB – 4x USB 2.0 host ports, 1x micro USB device port
  • Serial Ports
    • 3x Serial Port (2x RS232, 1x TTL)
    • 1x RS485 (Horizontal connectors with isolation protection)
    • 1x CAN (Horizontal connectors with isolation protection)
  • Other Expansion Headers
    • “BUS” header with 12-Bit address bus, 16-bit data bus
    • “I2C” header with 2x I2C
    • “SPI” header with 1x SPI,  1x PWM?
    • “AD” header with 8x ADC (4 for resistive touching, and 4 for user),
  • Debugging – JTAG connector
  • Misc – 4x LED, 6x user keys, 1x reset switch, 1x power switch, 1x boot switch (SD or NAND boot), on-board RTC
  • Power Supply – 5V
  • Power Consumption – 1.35W in standalone mode; 3.5 W to 5W with 7″ LCD in various scenario.
  • Dimensions – 190 x 130 mm
  • Temperature Range – -40℃~+85℃ (Operating), except the RTC chip.

Forlinx provides BSPs for Android 4.2,  Linux 3.2, and WinCE 6.0 / 7.0 with several drivers for each operating systems,and documentation and source code are available. You can find a little more information and/or contact the company for details on www.forlinx.net.

 

 

Interbrand top-100, Huawei becomes the first Chinese brand on the list

Inter-brand released the 15th annual Best Global Brands on Oct. 9, and a Chinese company broke into the list for the first time throughout history.

Huawei, a Chinese telecommunications and transmission network equipment manufacturer and the world's third largest smartphone provider was listed No. 94 and is one of five new entrants on the Best Global Brands ranking this year. Maybe Huawei is more of a household name in Asia than in Western markets, but it has got its popularity and reputation globally with its rapid growth and long-term investments and earned its place in this year' Best Global Brands ranking.

Focused on innovation and aggressive globalization, Huawei strategically utilizes its resources in accordance with market demand. Huawei is quickly becoming one of the world’s largest telecommunications equipment manufacturers with 65% of its revenue coming from outside of China.

Proved its strategy is prosperous, this transnational networking and telecommunications company is rapidly becoming the market leader in Latin America and Central Asia, and a major player in Canada. With the new marketing approach--getting closer to more customers which is to support its ambitions, the brand has recently launched a more consumer-friendly face. Its work that cooperated with telecom operators around the world is being leveraged as a way to show how much impact Huawei has on the world they live in. with these customers in mind, Huawei plans to eliminate 80% of the low-cost Mobile device this year. The goal is to develop products to meet consumer demand, instead of meet the minimum costs and operational specifications. Huawei's star product line—Ascend is clearly shows that the company is trying to change their image in the mobile phone market, transform low-cost alternatives into a more advanced one. With smart phone sales volume go up since the first quarter of 2014, and the current 20% global market share is in the best brands place, Huawei is at its full speed and making its mark to the world.

 

Whether the SSN4EGS411 and SSND00EGS412 are the same board?

In Huawei optical transmission boards, SSN4 is equal to SSND00, and generally speaking, the same boards that display different product name have the same feature code, like SSN4SL6402 and SSND00SL6402. But When it comes to Huawei service board SSN4EGS411 and SSND00EGS412, some customers are misguided and some customers are asking that whether we delivered the wrong model of board to them, because In huawei BOQ, it is show as SSND00EGS412, here version code is ND00, feature code is 412; But in board front panel, it show as SSN4EGS411, here verison code is N4, but feature code is 411. Actually they are the same board.
To avoid this confuse, we suggest when ordering a EGS4 board, it better to comment with a optical specification behind like: (1000BASE-LX).

For example, when you are about to order a SSN4EGS411 board, you must select maybe you will choose configuration(slots and transmission range etc.) like as follow:

111

After you selected the configuration of this board, it will appear message box like this:

333

The product name shows as SSND00EGS412. But the product name that shows on the board is SSN4EGS411.

222

So when you buy this model of board later, you won’t be confused again.

For more information about Huawei optical transmission boards or buy Huawei transmission network equipments, please visit our site or contact with: This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

 

StorPool – A Toolkit for Cloud Application Providers

StorPool is a software defined storage solution targeted at cloud application and infrastructure providers. The software runs on a cluster of commodity servers, aggregating the internal storage of those servers into a shared volume. The solution, for now, is only compatible with Linux based systems. For many online application or cloud providers this should not be an issue.

What makes the StorPool solution unique is the flexibility that permeates every aspect of the product. For example, many converged solutions require a lockstep addition of storage and compute. Each time you need to add capacity or processing power you have to buy both, in the form of another server, fully loaded. Most data centers, especially service providers, don’t scale that way. There are times when they need to scale just the compute aspects of their infrastructures and others where they simply need more storage.

StorPool customers can use a converged infrastructure when the data center needs both compute and storage resources. But, if one is needed more than the other, the organization can add dedicated storage nodes or dedicated clients (hosts with no storage). This ability to mix and match between converged, dedicated compute or dedicated storage is rare.

Read more at Storage Switzerland.

 

Enterprises are Moving to the Cloud

Cloud computing is growing rapidly. Businesses are moving to the cloud at an ever-increasing rate for many reasons. The agile ability to access applications from anywhere, anytime is a huge advantage for professionals. Dramatic cost savings are achieved by eliminating expensive hardware and software purchases, upkeep, and IT staff funding. Budgets are even improved by a reduction in overall power and utility bills when switching to the cloud. Many companies who have yet to make the switch are wondering if it will be worthwhile for them to consider.

Microsoft has recently announced that they will be ending support for the Server 2003 operating system. While this did not come as a shock to most, it most certainly served as a wake-up call. There are an estimated 2.6 million hot closets housing a Server 2003 operating system in businesses around the globe, and all will need to migrate over the next 8 months. The businesses will be faced with the decision: purchase brand new expensive hardware or look for an alternative solution at a much more affordable monthly rate. Cloud adoption is expected to climb dramatically during this time period as the hosted solution is more and more feasible, reliable, and secure.

As more and more businesses adopt cloud hosting services, studies and surveys are being conducted to determine satisfaction rates. Software as a Service (Saas) implementation is a huge decision for a company to make and therefore professionals are looking for the opinions of others who have already made the move. TechRepublic recently conducted a study of existing SaaS users, and the results were staggering. 91% of professionals surveyed report that their cloud computing solutions have either met or exceeded expectations.

These results are quite encouraging for businesses of all sizes who are considering making the move to the cloud. Software hosting is proving to be just as advertised and is benefiting businesses across the board. Many versions of business critical applications are available in the cloud. From SAP to your CRM of choice, QuickBooks hosting or Sage 50 hosting, all enterprise apps imaginable can be found in the cloud. This new data should help professionals make the decision to adopt a hosted software platform for their company's applications and data.

 
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