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TUX Web Server
The TUX web server is an unmaintained in-kernel web server for Linux licensed under the GNU General Public License (GPL). It was maintained by Ingo Molnár. It was limited to serving static web pages and coordinating between kernelspace modules, userspace modules, and regular userspace web server daemons that provide dynamic content. Regular userspace web servers do not need to be altered in any way for TUX to coordinate with them. However, userspace code has to use a new interface based on the tux(2) system call. The main differences between TUX and other webservers include: *TUX runs partly within a customized version of the Linux kernel and partly as a userspace daemon. *With a capable network card, TUX enables scatter-gather DMA from the page cache directly to the network. *TUX is only able to serve static web pages. While only being able to serve static web pages could be seen as a significant disadvantage, TUX has one significant advantage: it is able to serve pages fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
In-kernel Web Server
An in-kernel web server is an unlimited HTTP server that runs in kernel space or equivalent. It is also known as "accelerator". Benefits * Performance: the path taken by data from a source device (i.e. a disk) to a destination device (i.e. a NIC). Proper asynchronous zero-copy interfaces would make this available from user-space. * Scalability: with respect to number of simultaneous clients. Event notification of comparable scalability seems unlikely in user-space. Drawbacks *Security: Kernel processes run with unlimited privileges. *Portability. Every kernel needs a specific implementation route. *Reliability. Failure in the webserver may crash the OS. Implementations *illumos/Solaris: NCAkmod aka Network Cache and Accelerator (NCA) kernel module *HP-UX: NSAhttp *Linux: TUXMesiboIn-kernel real-time messaging server *Windows NT: (part of Internet Information Services, IIS) *SPIN: http *OpenVMS: WASD.trap See also * Comparison of web server software * Service-or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Request For Comments
A Request for Comments (RFC) is a publication in a series from the principal technical development and standards-setting bodies for the Internet, most prominently the Internet Engineering Task Force (IETF). An RFC is authored by individuals or groups of engineers and computer scientists in the form of a memorandum describing methods, behaviors, research, or innovations applicable to the working of the Internet and Internet-connected systems. It is submitted either for peer review or to convey new concepts, information, or, occasionally, engineering humor. The IETF adopts some of the proposals published as RFCs as Internet Standards. However, many RFCs are informational or experimental in nature and are not standards. The RFC system was invented by Steve Crocker in 1969 to help record unofficial notes on the development of ARPANET. RFCs have since become official documents of Internet specifications, communications protocols, procedures, and events. According to Crocker, the doc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Web Server Software
Free may refer to: Concept * Freedom, having the ability to do something, without having to obey anyone/anything * Freethought, a position that beliefs should be formed only on the basis of logic, reason, and empiricism * Emancipate, to procure political rights, as for a disenfranchised group * Free will, control exercised by rational agents over their actions and decisions * Free of charge, also known as gratis. See Gratis vs libre. Computing * Free (programming), a function that releases dynamically allocated memory for reuse * Free format, a file format which can be used without restrictions * Free software, software usable and distributable with few restrictions and no payment * Freeware, a broader class of software available at no cost Mathematics * Free object ** Free abelian group ** Free algebra ** Free group ** Free module ** Free semigroup * Free variable People * Free (surname) * Free (rapper) (born 1968), or Free Marie, American rapper and media personality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Httpd
HTTPd is a software program that usually runs in the background, as a process, and plays the role of a server in a client–server model using the HTTP and/or HTTPS network protocol(s). The process waits for the incoming client requests and for each request it answers by replying with requested information, including the sending of the requested web resource, or with an HTTP error message. HTTPd stands for ''Hypertext Transfer Protocol daemon''. It usually is the main software part of an HTTP server better known as a web server. Some commonly used implementations are: * Apache HTTP Server * BusyBox httpd * CERN HTTPd HTTP server * Cherokee HTTP server * Hiawatha HTTP server with reverse proxy functionality * Lighttpd HTTP server * NCSA HTTPd HTTP server * Nginx HTTP and reverse proxy server * OpenBSD's httpd (since OpenBSD 5.6) * Thttpd HTTP server * TUX web server aka kHTTPd See also * HTTP server * Web server * Comparison of web server software Web server software al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Server
A web server is computer software and underlying hardware that accepts requests via HTTP (the network protocol created to distribute web content) or its secure variant HTTPS. A user agent, commonly a web browser or web crawler, initiates communication by making a request for a web page or other resource using HTTP, and the server responds with the content of that resource or an error message. A web server can also accept and store resources sent from the user agent if configured to do so. The hardware used to run a web server can vary according to the volume of requests that it needs to handle. At the low end of the range are embedded systems, such as a router that runs a small web server as its configuration interface. A high-traffic Internet website might handle requests with hundreds of servers that run on racks of high-speed computers. A resource sent from a web server can be a preexisting file (static content) available to the web server, or it can be generated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of Web Server Software
Web server software allows computers to act as web servers. The first web servers supported only static files, such as HTML (and images), but now they commonly allow embedding of server side applications. Some web application frameworks include simple HTTP servers. For example the Django framework provides runserver, and PHP has a built-in server. These are generally intended only for use during initial development. A production server will require a more robust HTTP front-end such as one of the servers listed here. Overview Features Some features may be intentionally not included to web server to avoid featuritis. For example: * TLS/HTTPS may be enabled with a separate stunnel daemon that terminates TLS and redirects raw HTTP packets to http daemon. * NGINX and OpenBSD httpd authors decided not to include CGI interpretation but instead use FastCGI. For OpenBSD was developed a ''slowcgi'' gateway. * BusyBox httpd doesn't have automatically generated directory listing but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nginx
Nginx (pronounced "engine x" ) is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and publicly released in 2004. Nginx is free and open-source software, released under the terms of the 2-clause BSD license. A large fraction of web servers use Nginx, often as a load balancer. A company of the same name was founded in 2011 to provide support and ''Nginx Plus'' paid software. In March 2019, the company was acquired by F5, Inc. for $670 million. Popularity W3Tech's web server count of all web sites ranked Nginx first with 33.6%. Apache was second at 31.4% and Cloudflare Server third at 21.6%. , Netcraft estimated that Nginx served 22.01% of the million busiest websites with Apache a little ahead at 23.04%. Cloudflare at 19.53% and Microsoft Internet Information Services at 5.78% rounded out the top four servers for the busiest websites. Some of Netcraft's other statistics show Ngi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superuser
In computing, the superuser is a special user account used for system administration. Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor. In some cases, the actual name of the account is not the determining factor; on Unix-like systems, for example, the user with a user identifier (UID) of zero is the superuser, regardless of the name of that account; and in systems which implement a role based security model, any user with the role of superuser (or its synonyms) can carry out all actions of the superuser account. The principle of least privilege recommends that most users and applications run under an ordinary account to perform their work, as a superuser account is capable of making unrestricted, potentially adverse, system-wide changes. Unix and Unix-like In Unix-like computer OSes (such as Linux), ''root'' is the conventional name of the user who has all rights or permissions (to all files and programs) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buffer Overflow
In information security and programming, a buffer overflow, or buffer overrun, is an anomaly whereby a program, while writing data to a buffer, overruns the buffer's boundary and overwrites adjacent memory locations. Buffers are areas of memory set aside to hold data, often while moving it from one section of a program to another, or between programs. Buffer overflows can often be triggered by malformed inputs; if one assumes all inputs will be smaller than a certain size and the buffer is created to be that size, then an anomalous transaction that produces more data could cause it to write past the end of the buffer. If this overwrites adjacent data or executable code, this may result in erratic program behavior, including memory access errors, incorrect results, and crashes. Exploiting the behavior of a buffer overflow is a well-known security exploit. On many systems, the memory layout of a program, or the system as a whole, is well defined. By sending in data designed to ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kernelspace Web Server
An in-kernel web server is an unlimited HTTP server that runs in kernel space or equivalent. It is also known as "accelerator". Benefits * Performance: the path taken by data from a source device (i.e. a disk) to a destination device (i.e. a NIC). Proper asynchronous zero-copy interfaces would make this available from user-space. * Scalability: with respect to number of simultaneous clients. Event notification of comparable scalability seems unlikely in user-space. Drawbacks *Security: Kernel processes run with unlimited privileges. *Portability. Every kernel needs a specific implementation route. *Reliability. Failure in the webserver may crash the OS. Implementations *illumos/Solaris: NCAkmod aka Network Cache and Accelerator (NCA) kernel module *HP-UX: NSAhttp *Linux: TUXMesiboIn-kernel real-time messaging server *Windows NT: (part of Internet Information Services, IIS) *SPIN: http *OpenVMS: WASD.trap See also * Comparison of web server software * Service-orien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native POSIX Thread Library
The Native POSIX Thread Library (NPTL) is an implementation of the POSIX Threads specification for the Linux operating system. History Before the 2.6 version of the Linux kernel, processes were the schedulable entities, and there were no special facilities for threads. However, it did have a system call — — which creates a copy of the calling process where the copy shares the address space of the caller. The LinuxThreads project used this system call to provide kernel-level threads (most of the previous thread implementations in Linux worked entirely in userland). Unfortunately, it only partially complied with POSIX, particularly in the areas of signal handling, scheduling, and inter-process synchronization primitives. To improve upon LinuxThreads, it was clear that some kernel support and a new threading library would be required. Two competing projects were started to address the requirement: NGPT (Next Generation POSIX Threads) worked on by a team which included develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fedora (operating System)
Fedora Linux is a Linux distribution developed by the Fedora Project. Fedora contains software distributed under various free and open-source licenses and aims to be on the leading edge of open-source technologies. Fedora is the upstream (software development), upstream source for Red Hat Enterprise Linux. Since the release of Fedora 35, six different editions are made available tailored to personal computer, server (computing), server, cloud computing, Container (computing), container and Internet of Things installations. A new version of Fedora Linux is released every six months. , Fedora Linux has an estimated 1.2 million users, including Linus Torvalds (), creator of the Linux kernel. Features Fedora has a reputation for focusing on innovation, integrating new technologies early on and working closely with Upstream (software development), upstream Linux communities. Making changes upstream instead of specifically for Fedora Linux ensures that the changes are available t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
