In the Internet, we often see the "port" is the word, will often use the port number, such as behind the increase in the FTP address " 21", 21 says that the port number. Then the port in the end what does that mean? How to view the port number it? A port is a network of malicious attacks, the door then?, How do we face all kinds of ports? Read the content of this field will be introduced in order for your reference. 

93 7, in August over the world, "Code Red" (code red) virus and the subsequent upgrade of the "Nimda" (Nimda) virus ravaged the Internet, a small worm caused millions of dollars around the world servers and personal computers are infected, resulting in batches of sites shut down, many of the corporate network, or LAN block interrupt, efficient e-commerce and network office system into a paralysis of ... ... powerful destructive damage to the global network is far far more than the billions of dollars. It is no exaggeration to say that Code Red and Nimda impact on the network in the world, no less terrorist attacks shocked the world, 911 attacks on the United States the economic impact. So what gives these two viruses so much power? I would like people to re-recognize the terrible virus spread rapidly through the Internet at the same time, more thought should be smoke-free DoS the network in this important battle of ideas.

Today some of the most significant network security risks can be traced to the city of Wuhan in central China, where a hacker only junior high school education once implanted panda cartoon image of millions of computers in order to hide a damaging spyware .

Whether using manual testing or using security testing tools, malicious attackers employ a variety of tricks from the inside and outside your firewall break your SQL Server system. Since hackers do such things. You also need to carry the same attacks to test the strength of your system's security. This is a matter of course. The following is a hacker to access and run the SQL Server system break the ten tricks.

We often hear about IE attacks by malicious software news, but never heard of Firefox, malicious software specifically for it, as Firefox's growing stronger and stronger, more and more of its customers, of course, attract more hackers in attention. Yesterday, BitDefender researchers released a statement on the blog, said they found a Firefox user specific malicious software, hackers for the Firefox "exclusive" development.

Today in the frequent intrusion, the best way to prevent the integrated use of firewall, IDS and IPS.

Zhuzhou, Hunan Yong Gong people's credit card stolen after brush has sued the business case by the court of first instance verdict: Shopping Liu Cheng responsibility to bear. The judge brought in to call the owner Gong Yong joy, but also revealed a huge risk - the majority of the capacity of businesses can sign for the review stand the test?

McAfee announced McAfee IntruShield3.1 recent intrusion prevention solutions and new IntruShield Security Manager (ISM) equipment. ISM is a powerful, pre-configured, plug and play appliance that manages IntruShield IPS deployments.

There are some issues that users often confused: the product of functions, very similar description of the various vendors, a number of "rising star" and the well-known brand is very similar. Faced with this situation, how to identify? Described as very similar products, even if the same function, in specific implementations, the availability and ease of use, the individual differences are very obvious.

Internet access when the network frequently find themselves in constant alarm firewall, experts tell you which may be suffered by hackers. Olympic Games coming, to ensure you enjoy uninterrupted Olympic information network, here to introduce you to some of these uninvited hackers out of solution.

Computer Virus Prevention Service issued a warning, a kind of high-risk infectious virus recently, "antique" appearance on the Internet, the Hazard rated "high", can infect all executable files on the system, once the poisoning, the user's computer will be completely Hackers control.

Fault phenomena】 【forged source address attacks, hackers send the machine to host a large number of victims of fake source address of the TCP SYN packet, the NAT session security gateway occupied the resources to security gateway NAT session table filled, leading to the LAN everyone can access.

Technology

Denial of service technological innovation has been basically settled, and the last century the invention of the last decade have gradually away. However, with broadband access, home automation and now the computer become more powerful, makes denial of service attack of some redundant. Especially when we find some of this has disappeared in the late 90's attack the old way (such as land, its use of similar source and destination IP address and port to send UDP packets) of these attack techniques now coming back, this conclusion would more evident. The only progress in this regard is the ability to launch parallel tasks, which can simply not be achieved by the 486 processor, the way to significantly increase attack strength.

4, closed the port risk

Today, emerging network viruses, especially worms, when the successful invasion of these worms, it will open some ports to continue to invade other hosts within the network, and all the damage caused by the local system. Our method is to deal with the closure of those ports, you can stamp out the virus invasion. In order to close the "Blaster" virus attacks the common port "135" as an example.

Temple official site was hacked twice. Hackers first to Shaolin Temple Chinese name for the official website for "Shaolin Shi die evildoer" in large letters, then put "Shi monk repentance", and with a seat according to Shi's one, under the guise of its Shaolin commercial representation on behalf of guilt and regret.

The first one: Screensaver

In Windows, after the screen saver is enabled, as long as we leave the computer (or do not operate the computer) the time to reach the preset time, the system will automatically start the screen saver, and when the user moves the mouse or tap the keyboard to return to normal working condition , the system will open a password confirmation box, have to enter the password correctly to return the system, without knowing the password the user will be unable to enter the Gongzuozhuangtai, to protect the security of data.

Remember: now every step of the victims of the system operator may change the existing evidence or lead to the loss of sensitive information!

Java Server Page (JSP) to create dynamic Web pages, as technology is constantly heating up. JSP and ASP, PHP, not the same working mechanism. In general, JSP pages are compiled in the execution-style, rather than to explain style. First call the implementation of a JSP file is compiled to Servlet process. When a browser requests to the server that a JSP file, the server will check since the last compiled JSP files have changed, if not changed, the direct implementation of the Servlet, without re-compilation, so that efficiency will be improved obviously .

Called "Maxima Wall downloader variant A (Worm.Win32.QDH.a)" of the virus this week, particularly noteworthy as it spread through the web page linked to horse, shut down the system firewall, changing the system date, close the various anti-virus software Download a large number of Trojan viruses to the user's PC to run, great security risk to users.

Microsoft. NET Framework is a popular software development toolkit.

. NET Framework in dealing with loopholes embedded request, an attacker could exploit this vulnerability into the script code execution.

Aug. 21 foreign news, said security personnel on a Cisco PIX 500 Series Security Appliance is vulnerable situation after two weeks of investigation, Cisco recently said it could not confirm the existence of this vulnerability.

Web hosting service providers in the operating process may be subject to hacker attacks, often attacks are SYN, DDOS, etc.. By replacing the IP, to find the site of attack may be to avoid attacks, but the time for a break in service longer. More thorough solution is to install a hardware firewall. However, hardware firewalls are expensive. Consider using the Linux system itself can provide firewall capabilities to defend against.

Today in the development of network security, IDS or intrusion detection system used in the network environment is increasingly common, when a hacker attack with IDS in the network server, the first consideration is how to deal with IDS, attacks mainly a How do we attack IDS, the second is how we bypass the monitoring of IDS. This article details the current analysis of the main NIDS.

Cloud computing a lot of advantages from needless to say, some of the benefits and save money, so at this time is quite attractive Hou. To list a few, can list: can be calculated without a large investment of resources, reduce data center infrastructure and power consumption, reduce PC power consumption and cost, more agile and faster completion of the project can be IT staff use more areas of need, no longer to maintain the infrastructure or software version upgrades on the horizon. There are many benefits.

Google Wave for most Chinese users who may also be unfamiliar, but there is no doubt that since the end of 2009 has begun testing a small area, it does lead to another shock the Internet industry. In accordance with the wave Developer Conference last year, saying Google, Google Wave is a personal communication and collaboration tool that will e-mail, instant messaging software, wiki, online chat, social network, to integrate the functions of project management, to use naturally smooth and powerful. Although not formally logged Google Wave in China, but its fans have begun a fanatical pursuit of a Google Wave's invitation, in some of the store has even been bid up to an astounding high.