BSELIB

Internet-scale will be doubled every 100 days, customers want to get 7 days 24 hours non-stop availability and faster system response time, rather than a site repeatedly to see “Server Too Busy” and frequent system failure.

The core of the network in various parts, with the increased traffic, access traffic and rapid growth in data traffic, its processing capacity and computational intensity will also increase accordingly, allowing a single device simply can not afford. In this case, if the existing equipment to do throw a lot of hardware upgrades, which would result in a waste of available resources, and if have to face the next business volume increase, which in turn lead once again the high cost of hardware upgrades inputs, and even superior performance of the device and then can not meet current traffic needs.  As a result, load-balancing mechanism came into being.

 Load balancing (Load Balance) built on top of existing network infrastructure, which provides a cheap and effective and transparent method of expansion of network equipment and servers, bandwidth, increase throughput, enhance network data processing capability, increase network flexibility and availability of.

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Even in the economic development of the best of times, computers also need to update the rotation, and we also need to decide how to deal with them reasonably. In the era of economic crisis, people have laid off, running high-cost software system had to be eliminated, the system failure resulting in the need to integrate rather than repair, processing time, computer equipment decisions must become more careful. If we pay no attention to this point, the security could be threatened

The following list is about the equipment, key to the safe handling of the 10 decision

1) In the time-out equipment, to ensure that all accounts a letter Interest rates and access control tools have been cleared. You do not want to pre-company personnel, using the original workstation connected to the company’s network it, you do not want to connect a computer for remote network access account without the need of the time the network attacker as a tool bar. Therefore, it is the first thing you should do something.

2) Do not think to fill up your hard drive means that junk data have been safely handled.  If the drive contains confidential information, you should be removed before processing operations. Even if you have not been informed that drive the existence of any confidential data, but also should consider whether it should be examined to prevent the omission; if not found, then, do not just put waste inside. shred utility. For the stored data, the only reformat the drive or run the “Clear” command is not enough; shred utility sort of practical attacks can help you more secure delete files. Contains the encrypted data drive during delete operation should be preceded by processing the data, increasing the difficulty of being restored.

In the most extreme cases, the storage device may require the destruction of the physical layer to prevent confidential data from being leaked to the next one to obtain the drive, even in the company’s internal, but also need to do so.  In this case, you may not need its own hands.  Experts could carry out such work for you, and in the realization of the hard disk drive so that data can not be resumed at this point, they may do better than you.  If your request is very strict, can not believe that specializes in the storage device from an external security of the destruction of the company, they should establish a dedicated in-house team and external contractors, and the same equipment, same equipment, has the same skills.

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It should seem that it would be easy to connect a single computer to the Internet, and be able to use that connection simultaneously with all other computers in the same room (on a LAN). Unfortunately, it’s a bit more complicated than that. Naturally, you can have a separate Internet connection for each computer, but that’s not terribly practical. You can do it either with a software or a hardware solution:

Software to utilize existing hardware:

• If you have Windows 98 Second Edition, Windows Me, Windows 2000, or Windows XP, you can use the included Internet Connection Sharing feature.
• WinGate and WinProxy are third-party, shareware alternatives that enable you to configure your computer as a gateway or a proxy server, respectively. (Only recommended if you can’t get ICS to work, if your version of Windwos doesn’t support ICS, or if ICS doesn’t meet your needs). Advantages to using software to share Internet connections:
  • No additional cost, and no additional equipment or wiring to set up.
  • Assuming you have a working LAN, you can be up and running in under 20 minutes.
  • ICS works with any type of Internet connection.
• Drawbacks to using software to share Internet connections:
  • The performance may be slightly slower than a hardware solution (below), although for most intents and purposes, you’ll never notice a difference.
  • The computer hosting the connection must be on for the others to have access to the Internet.
  • The software can be difficult to set up.

Additional hardware:

• A special router is connected directly to the Internet connection adapter.
• Each computer is then connected to the router (which is also a hub), which provides Internet access to all connected computers simultaneously.
• Some routers double as Internet connection adapters, so yoy may need to get one that specifically supports DSL, cable, ISDN, etc. Newer alternatives work with your existing equipment, making them better long-term investments.
• These routers typically are very easy to set up, and support 4 to 10 computers. Since they connect via ethernet, each computer will need an ethernet card.
• Advantages to using hardware to share Internet connections:
  • The hardware provides access to any computer that needs it; no single “host” computer is required to be on at any given time.
  • The hardware usually works independently of the operating system, so you don’t need a version of Windows the specifically supports ICS.
• Drawbacks to using hardware to share Internet connections:
  • The hardware solution is much more expensive, and requires additional cabling and setup.
  • The hardware solution will only work with certain types of Internet connections.

Other alternatives:

• If you have DSL, contact your provider to find out about getting additional IP addresses. Five IP addresses, for example, would typically provide Internet access for four computers without any special software or expensive hardware. The downside is the additional monthly expense, although this can be as low as an extra few dollars per month.

Types of network attacks

1. Reconnaissance attacks
2. Access attacks 
3. Denial of service (DoS) attacks

Reconnaissance attacks — An intruder attempts to discover and map systems, services, and vulnerabilities.

Access attacks — An intruder attacks networks or systems to retrieve data, gain access, or escalate their access privilege. 

Denial of service (DoS) attacks —An intruder attacks your network in such a way that damages or corrupts your computer system, or denies you and others access to your networks, systems, or services.

Threats can be classified into below four categories.

1. Unstructured threats
2. Structured threats
3. External threats
4. Internal threats

Unstructured threats consist of mostly inexperienced individuals using easily available hacking tools over the Internet. People are mostly motivated by malicious intent, in this category but most are motivated by the intellectual challenge and are commonly known as script kiddies. They are not the most talented or experienced hackers, but what they have and matters is motivation.

Structured threats consist of hackers who are more highly motivated and are technically sound. They usually understand network system designs and vulnerabilities. They also knows how to create hacking scripts to penetrate the network systems.

External threats are individuals or organizations working outside your company who do not have authorized access to your computer systems or network. They work their way into a network mainly from the Internet or dialup access servers.

Internal threats occur when someone has authorized access to the network with either an account on a server or physical access. They are typically disgruntled former or current employees or contractors.