Denial of service attack is a worldwide system vulnerabilities, hackers are indulging in its research, and numerous Internet users will become victims of such attacks.Tribe Flood Network, tfn2k, smurf, targa ... there are many procedures are being continuously developed.These programs like the plague to spread throughout the network, make our village more weak, and we had to find a simple-to-use security solutions to meet the dark attacks.

September 17, 2009, but also a celebrity he has left us.Also a well-tested Scareware (fake security software) trick took the opportunity to cause trouble, Scareware, often through the user informed of their intention to leave the computer infected with a virus to induce it to download malicious software.Michael? Jackson (Michael Jackson), Farah? Fawcett (Farrah Fawcett) and the beginning of Natasha? Richardson (Natasha Richardson) of death have become criminals the opportunity to implement this tactic.Now, the network's attention turned to the criminals had just passed away on Monday, Patrick? Swezey (Patrick Swayze), the star's death as its spread malicious software, "specialties" (Soupe Du Jour).

With the introduction of the concept Centrino wireless network access point as sprung up, but most of these hot spots and the algorithm does not contain the password protection, to create security problems, but this is only the issue of network access, speed of the illegal occupation of other usersnot cause much damage. but we pay attention to is that the user is idle if the Wi-Fi did not disable the wireless card, what will cause a hazard.

Recently a new virus variant gray dove releases jayzou.exe virus file.

This is a hacking program, it is actually a Trojan horse file, will get the user's operating system permissions, and then connect to the hacker's remote server to the computer in hackers stealing information or on the computer Jinxing Africa and France Kong Zhi.

Large number of malicious plug-ins, viruses, trojans and other ways to modify the system registry always make the system security at risk.If you give the registry plus a security barrier, then the system reduces the lesions may be reduced significantly.

"Long-term more experienced hackers Webmaster base, the main teaching gray pigeon, catch it, DDOS attacks, Trojans, production, web invasion, the website linked to horse, horse shelling, free to kill, bundled server production and maintenance, Internet security and intrusion, etc.undertake all types of hacking business. "In Baidu Post Bar, similar ads everywhere, and driven by the interests of the virus also can be sold openly, from writing programs to spread to the sale and then to money laundering split, the resulting chain hackers create viruses moreis shocking.

September 14 message, Microsoft said it could not repair a Windows 2000 operating system vulnerabilities.In this way, including some banks and government agencies, including New Zealand's top 100 PC users, 16 users will be unable to fully protect your system against hackers.

Not long ago, the Internet be exposed Windows 7 Beta's UAC (User Account Control) in the presence of a security vulnerability malicious software or code when trying to close the UAC feature, the system will not prompt the user, and Microsoft has contested Road, this is not a loophole, and that inthe official version of Windows 7 will not have to be modified.

September 16 News Mozilla Corporation Thursday announced the "Firefox" (Firefox) browser, a new version, which fixes a recently discovered could lead to hackers PC control vulnerability.

Domestic research analyst CCW Research (CCW Research) reported a study, the majority of companies present, China is valued at the purchase of software, software stability and security.Therefore, most companies prefer to buy genuine software.

21st century is the era of the Internet economy, Internet has entered every household, when we enjoy swimming in the Internet, often the safety of the network behind.In fact, risk is everywhere, the firewall is the network security is an important protective measures for the protection of network and systems.Monitoring data through the firewall, according to the administrator's request, to allow and prohibit the passage of specific packets, and monitor and record all events.

For domestic users habits and special needs, etc., often have a better understanding of domestic software companies, domestic enterprises and targeted services are foreign brands can not match.

The twenty-first century is the century of information, with the development of network technology, especially the Internet, globalization, and further increase the degree of information sharing.The impact of digital information more in-depth all aspects of social life, a variety of Internet applications based on Internet technology, such as e-government, e-commerce has been developing rapidly.Network is becoming the way people work, an integral part of life.As the Internet's openness and interoperability, all information online is open to everyone, so the network information security issues become increasingly prominent.At present the government sector, financial sector, enterprises and individuals increased attention to this important issue.Large, medium-sized enterprises on how to protect information security and network security, minimize or avoid information leakage, damage and other security problems and economic losses caused by the impact on corporate image is in front of us need a proper solutionissues of strategic importance.

While the FreeBSD base system using only the functions provided by the computer system can be set to a very high security system.However, there are a variety of networks or the inspection system used to enhance the security of software tools, some tools are standard procedure safer alternatives, enhanced system security, some of the system or network surveillance and inspection tools.Using these tools will no doubt further enhance the security of the system.FreeBSD's Packages Collection or the Ports Collection on the security of these tools usually sub-class.

Near the end of the year, from school children to university students Panlai the winter holidays, not just play, all kinds of names, training, including English tuition, and so has been preparing a new round of Kaoyan waiting for you.Hackers also take advantage of this opportunity to have focused their attention on just such a training class tutorial web site, recently, Duba Cloud Security Center found that a large number of websites have been linked to horse training classes, such as Shanghai Crazy English, the new curriculum free resource network (Figure 1), andFujian Chinese net nearly a thousand sites were intruders.

Domestic and foreign organizations or individuals to seek hackers stealing and tampering with the network information of interest, has become an indisputable fact, Zai Ji units and individuals continued economic loss caused by the same time, we should note that most of these threats, the attack was launched on Web 网站, inirreparable damage to us, we need to tell you the site of several common vulnerabilities, and prevent these vulnerabilities method is intended to help managers sort out the general site safety precautions thoughts, find the current focus on prevention, the greatestto avoid or reduce the threat of losses.

Skynet installed, it is not the default anti-virus page, and now with you publish a way for Skynet to block a majority of the popular web virus.

Delay the release of the latest Windows patches decision by the security software industry praise.

In computer security, you do not have slack.Update your application at any time to ensure that they are the latest version, you also installed anti-virus software.You are very concerned about what you viewed the site, installed on your computer what kind of software.

First, the main application firewall topology

Although the border is a traditional firewall, but its most widely used technology the most mature.Most enterprise networks are applied in the border firewall.So to understand the application of the border firewall technology to grasp the firewall is very important.

Microsoft Windows Server 2003 in firewall functionality is so simple, so many system administrators will be seen as tasteless, it has been a simple, supports only inbound protection, host-based stateful firewall.With Windows Server 2008, growing closer to us, its built-in firewall has been a huge improvement.Let us look at the new advanced firewall protection system will do to help us, and how to use management console snap-in to configure it.

5, use ngrep to handle tfn2k attack

According to use DNS to keep track of the principle tfn2k resident program, and now there have been called ngrep utility.Modified ngrep (see Appendix) can monitor about five types of tfn2k denial of service attacks (targa3, SYN flood, UDP flood, ICMP flood and smurf), it also has a loop using the cached DNS and ICMP requests for records.If ngrep find offensive behavior, then it will cache the contents of its print and continue to record ICMP echo request.If an attacker to ping the target host by means of riveting set targets, then attack during or after the record is an ICMP response to a request to capture the attacker careless way.As the attacker is still possible to use other services to verify the effectiveness of their attacks (eg, web), so the standard of other services should be as detailed logging.

1, using the firewall to allow remote maintenance and safer

Carried out in the shared dial-up ADSL, many network administrators always like through the Remote Desktop feature to remotely manage and maintain local area network to other computers in order to improve network management and maintenance efficiency.But we know, are free to use the Remote Desktop feature, easy to attack those who attack the illegal invasion of the local computer to "channel", if we can find ways to make Vista system protection for this "channel" for access to safety, then the network administrator to use this"channel" for the security of remote maintenance operations will be greatly increased.Remote maintenance operations to make a firewall to protect the safety, we can follow the following steps of:

Linux operating system as open-loved by many programmers, many programmers prefer to write high-level Linux operating system software.This makes the Linux operating system has a wealth of software support, as well as numerous technical staff as the technical backing and support, which makes Linux more and more popular by the programmer.

For medium and large enterprise networks, has been on the management of the internal LAN is a very complex and vexing problem, just do not care even if a user clicks on a malicious Web site link, will the virus within a few seconds, thenimmediate impact on the stability and security throughout the LAN, and now is the proliferation of malicious sites, viruses, means of communication pattern stacked out