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Shields Up
ShieldsUP is an online port scanning service created by Steve Gibson of Gibson Research Corporation. The purpose of the utility is to alert the users of any ports that have been opened through their firewalls or through their NAT routers, which can be used by malicious users to take advantage of security vulnerabilities. The utility scans the most common file sharing ports, as well as all service ports (1-1056), and user defined ports, in sets of 64. It is often recommended for checking port vulnerabilities. The scanning servers have the static IP addresses of 4.79.142.192 to 4.79.142.207. See also * DShield DShield is a community-based collaborative firewall log correlation system. It receives logs from volunteers worldwide and uses them to analyze attack trends. It is used as the data collection engine behind the SANS Internet Storm Center (ISC). DS ... References External links Official websiteGibson Research Corporation Port scanners {{network-software-stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TCP And UDP Port
In computer networking, a port is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system, a port is a logical construct that identifies a specific process (computing), process or a type of network service. A port is identified for each transport protocol and address combination by a 16-bit unsigned number, known as the port number. The most common transport protocols that use port numbers are the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP). A port number is always associated with an IP address of a host and the type of transport protocol used for communication. It completes the destination or origination network address of a message. Specific port numbers are reserved to identify specific services so that an arriving packet can be easily forwarded to a running application. For this purpose, port numbers lower than 1024 identify the historically most comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steve Gibson (computer Programmer)
Steven "Steve Tiberius" Gibson (born March 26, 1955) is an American software engineer, security researcher, and IT security proponent. In the early 1980s, he worked on light pen technology for use with Apple and Atari systems, and in 1985, founded Gibson Research Corporation, best known for its SpinRite software. Early life Gibson started working on computers as a teenager, and got his first computing job with Stanford University's artificial intelligence lab when he was 15 years old. He then studied electrical engineering and computer science at the University of California, Berkeley. Career Gibson was hired as a programmer for California Pacific Computer Company in 1980, where he worked on copy protection for the company's products. He then founded Gibson Laboratories in Laguna Hills, California, in 1981, which developed a light pen for the Apple II, Atari, and other platforms before going out of business in 1983. In 1985, Gibson founded Gibson Research Corporation (GRC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gibson Research Corporation
Steven "Steve Tiberius" Gibson (born March 26, 1955) is an American software engineer, security researcher, and IT security proponent. In the early 1980s, he worked on light pen technology for use with Apple and Atari systems, and in 1985, founded Gibson Research Corporation, best known for its SpinRite software. Early life Gibson started working on computers as a teenager, and got his first computing job with Stanford University's artificial intelligence lab when he was 15 years old. He then studied electrical engineering and computer science at the University of California, Berkeley. Career Gibson was hired as a programmer for California Pacific Computer Company in 1980, where he worked on copy protection for the company's products. He then founded Gibson Laboratories in Laguna Hills, California, in 1981, which developed a light pen for the Apple II, Atari, and other platforms before going out of business in 1983. In 1985, Gibson founded Gibson Research Corporation (GRC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firewall (networking)
In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet. History The term ''firewall'' originally referred to a wall intended to confine a fire within a line of adjacent buildings. Later uses refer to similar structures, such as the metal sheet separating the engine compartment of a vehicle or aircraft from the passenger compartment. The term was applied in the late 1980s to network technology that emerged when the Internet was fairly new in terms of its global use and connectivity. The predecessors to firewalls for network security were routers used in the late 1980s. Because they already segregated networks, routers could apply filtering to packets crossing them. Before it was used in real-life computing, the term appeared in the 1983 computer-hacking movie ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
File Sharing
File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images and video), documents or electronic books. Common methods of storage, transmission and dispersion include removable media, centralized servers on computer networks, Internet-based hyperlinked documents, and the use of distributed peer-to-peer networking. File sharing technologies, such as BitTorrent, are integral to modern media piracy, as well as the sharing of scientific data and other free content. History Files were first exchanged on removable media. Computers were able to access remote files using filesystem mounting, bulletin board systems (1978), Usenet (1979), and FTP servers (1970's). Internet Relay Chat (1988) and Hotline (1997) enabled users to communicate remotely through chat and to exchange files. The mp3 encoding, which was standardized in 1991 and substantially reduced the size of audio files, grew to widespread use in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of TCP And UDP Port Numbers
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses. However, many unofficial uses of both well-known and registered port numbers occur in practice. Similarly, many of the official assignments refer to protocols that were never or are no longer in common use. This article lists port numbers and their associated protocols that have experienced significant uptake. Table legend Well-known ports The port numbers in the range from 0 to 1023 (0 to 210 − 1) are the ''well-known ports'' or ''system ports''. They are used by system processes that provide w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifehacker
''Lifehacker'' is a weblog about life hacks and software that launched on January 31, 2005. The site was originally launched by Gawker Media and is currently owned by G/O Media. The blog posts cover a wide range of topics including: Microsoft Windows, Mac, Linux programs, iOS and Android, as well as general life tips and tricks. The website is known for its fast-paced release schedule from its inception, with content being published every half hour all day long. In addition, ''Lifehacker'' has international editions: ''Lifehacker Australia'' ( owned by Pedestrian), ''Lifehacker Japan'', and ''Lifehacker UK'', which feature most posts from the U.S. edition along with extra content specific to local readers. ''Lifehacker UK'' folded on September 9, 2020 when its UK publisher decided not to renew its license. History Gina Trapani founded ''Lifehacker'' and was the site's sole blogger until September 2005, when two associate editors joined her, Erica Sadun and D. Keith Robinson. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computerworld
''Computerworld'' (abbreviated as CW) is an ongoing decades old professional publication which in 2014 "went digital." Its audience is information technology (IT) and business technology professionals, and is available via a publication website and as a digital magazine. As a printed weekly during the 1970s and into the 1980s, ''Computerworld'' was the leading trade publication in the data processing industry. Indeed, based on circulation and revenue it was one of the most successful trade publications in any industry. Later in the 1980s it began to lose its dominant position. It is published in many countries around the world under the same or similar names. Each country's version of ''Computerworld'' includes original content and is managed independently. The parent company of Computerworld US is IDG Communications. History The first issue was published in 1967. Going international The company IDG offers the brand "Computerworld" in 47 countries worldwide, the name and fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC Magazine
''PC Magazine'' (shortened as ''PCMag'') is an American computer magazine published by Ziff Davis. A print edition was published from 1982 to January 2009. Publication of online editions started in late 1994 and have continued to the present day. Overview ''PC Magazine'' provides reviews and previews of the latest hardware and software for the information technology professional. Articles are written by leading experts including John C. Dvorak, whose regular column and "Inside Track" feature were among the magazine's most popular attractions. Other regular departments include columns by long-time editor-in-chief Michael J. Miller ("Forward Thinking"), Bill Machrone, and Jim Louderback, as well as: * "First Looks" (a collection of reviews of newly released products) * "Pipeline" (a collection of short articles and snippets on computer-industry developments) * "Solutions" (which includes various how-to articles) * "User-to-User" (a section in which the magazine's experts answ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifewire
Lifewire is a technology information and advice website. The website's owner is Dotdash Meredith, originally About.com, which launched Lifewire in 2016 as one of its spin-off vertical sites. As of April 2022, it had a global website ranking of 1432 by Alexa Internet. History Lifewire was the third standalone brand of About.com, an IAC-owned media company, which broke up its collections of DIY and how-to information into branded vertical websites and is a competitor to Techcrunch, Techradar, PCmag and Systweak Lifewire was preceded by Verywell, a health info website, and The Balance, a personal finance site. Since About.com was one of the top 50 biggest sites online, Lifewire became a top 15 technology website in the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IP Address
An Internet Protocol address (IP address) is a numerical label such as that is connected to a computer network that uses the Internet Protocol for communication.. Updated by . An IP address serves two main functions: network interface identification and location addressing. Internet Protocol version 4 (IPv4) defines an IP address as a 32-bit number. However, because of the growth of the Internet and the depletion of available IPv4 addresses, a new version of IP (IPv6), using 128 bits for the IP address, was standardized in 1998. IPv6 deployment has been ongoing since the mid-2000s. IP addresses are written and displayed in human-readable notations, such as in IPv4, and in IPv6. The size of the routing prefix of the address is designated in CIDR notation by suffixing the address with the number of significant bits, e.g., , which is equivalent to the historically used subnet mask . The IP address space is managed globally by the Internet Assigned Numbers Authority (IA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
