The drawback of such behavior blocking anti-virus software is its high rate of false virus alerts, because it has difficulty in distinguishing a computer virus from normal software, which sometimes acts in a virus-like way. For example, when server 3 or a client computer 2 receives E-mails, E-mail attachments may be embedded with a malicious worm. Another example is that a client computer 2 can be infected by downloading a computer file containing a computer virus from an outside FTP server. FIG. 3 is a flow diagram illustrating an embodiment of creating a memory table 205 for computer network virus access control; FIG, 4 is a flow diagram illustrating computer network access control for preventing computer virus infection using access control time 211 ; FIG.
Patent Application Ser. No. 60/282,203, entitled Temporal Access Control System for Virus Outbreaks, filed on Apr. 06, 2001, the disclosures of which are incorporated herein by reference in their entireties. TECHNICAL FIELD This invention pertains to the field of computer virus prevention and protection, and in particular, to proactive access control of computer networks during computer.
For example, standard installation and upgrade routines may patch existing files in a manner similar to a computer virus. To reduce the false alerts, a network administrator may have to lower the sensitivity of the behavior-blocking software, which entails higher risk of virus infection during a computer virus outbreak. BRIEF DESCRIPTION OF THE DRAWINGS These and other more detailed and specific objects and features of the present invention are more fully disclosed in the following specification, reference being had to the accompanying drawings, in which: FIG. DISCLOSURE OF INVENTION. The present invention overcomes deficiencies and limitations of conventional anti-virus software by providing a computer network access control method, system and computer-readable medium to block computer virus invasion and to reduce damages caused to a computer network ( 1 ) with minimum intrusive effects on computer network operation. Some computer viruses do not copy themselves to other computer code, e.g., Trojan horse type viruses, but they allow a hacker in a remote computer to take control of an infected computer. Not knowing about the infection, the user connects the mobile computer to computer network 1. As a result, the computer virus enters the network 1 and infects computers 2, 3 through interchanging computer files. Nowadays computer viruses spread rapidly throughout computer networks. New viruses can contaminate hundreds of thousands of computers worldwide in a few hours or days and cause enormous damage. During the virus outbreak, enterprise computer networks are especially vulnerable to computer virus attack because most of them are constantly connected to a wide area network (WAN) to. 5A is a flow diagram illustrating computer network access control using multiple control parameters is access control message 202 ; FIG. 5B is a flow chart illustrating computer network access control using multiple control parameters is access control message 260. In particular, the access control message ( 260 ) includes a time limit ( 255 ). The time limit ( 255 ) is used by the access control module ( 203 ) on computers ( 2, 3 ) to manage the execution of computer code. BACKGROUND ART A computer virus, in the broad sense that the term is used in the present specification and claims, is any malicious computer program or code that has the potential to infect normal computer files or damage computer systems in any way. All Idol Picture Galleries Some Now Include Bio and Filmography. Dylan Cash Dylan Crowley. Johnny Pacar Johnny Simmons Jojo. Mia Talerico. The animation and design of this show is really neat in general. The letterbox style gives it an interesting feel by itself, but a lot of scenes are tinged with some stained glass style artwork, showcasing scenes from the show with the characters or just general multicolored backdrops. "I tore a ligament up in my knee Stewart says. "I was racing again the next week. Young and dumb.". Stewart's parents divorced when he was in high school, and his father left for Indianapolis. Details Illegal or immoral use of the computer or its resources is cyber crime. It includes unauthorized access to private pages, stealing credit card information, piracy etc. As the cyber crimes are increasing day by day, it's affecting the industry on a large scale. Специалисты пока не могут определить, как именно вирус заражает промышленные системы, но он уже был применен против интернет-провайдеров и телекоммуникационных компаний России, Саудовской Аравии, Мексики, Ирландии и Ирана. По данным компании, Regin уже был использован для взлома почтовых серверов компании Microsoft и прослушивания телефонных разговоров основных международных сетей.
For example, standard installation and upgrade routines may patch existing files in a manner similar to a computer virus. To reduce the false alerts, a network administrator may have to lower the sensitivity of the behavior-blocking software, which entails higher risk of virus infection during a computer virus outbreak.