This document discusses functions of several variables. It introduces notation for functions with multiple independent variables, defines the domain of such functions, and explains how to graph functions of two and three variables by sketching traces in coordinate planes and parallel planes. Level curves and contour maps are presented as ways to visualize functions of two variables in the xy-plane. Examples demonstrate finding domains, sketching graphs using traces and level curves, and interpreting contour maps.
Npppd is a VPN daemon in OpenBSD that supports PPTP, L2TP and PPPoE. It can authenticate using local files or RADIUS and tunnel IP packets. Npppd first appeared in OpenBSD 5.3 and its configuration file format has changed over time. Example configurations show how to set up basic and advanced npppd VPN tunnels using PPTP or L2TP with IPsec, and how to monitor active sessions. Future work may include better packet filtering and ARP cache integration.
This document discusses the Heartbleed bug in OpenSSL and the creation of LibreSSL as a more secure alternative. It notes that 17% of HTTPS servers were vulnerable to Heartbleed, which allowed attackers to steal passwords, credit cards, and other private data from server memory. LibreSSL was created to have fewer lines of code, modern coding practices, and fewer portability workarounds than OpenSSL to address bugs like Heartbleed. The document emphasizes fixing bugs quickly and not reinventing standard library functions.
LibreSSL is a version of the TLS/crypto stack forked from OpenSSL in 2014, with goals of modernizing the codebase, improving security, and applying best practice development processes.
Primary development occurs inside the OpenBSD source tree with the usual care the project is known for. On a regular basis the code is re-packaged for portable use by other operating systems.
This document discusses functions of several variables. It introduces notation for functions with multiple independent variables, defines the domain of such functions, and explains how to graph functions of two and three variables by sketching traces in coordinate planes and parallel planes. Level curves and contour maps are presented as ways to visualize functions of two variables in the xy-plane. Examples demonstrate finding domains, sketching graphs using traces and level curves, and interpreting contour maps.
Npppd is a VPN daemon in OpenBSD that supports PPTP, L2TP and PPPoE. It can authenticate using local files or RADIUS and tunnel IP packets. Npppd first appeared in OpenBSD 5.3 and its configuration file format has changed over time. Example configurations show how to set up basic and advanced npppd VPN tunnels using PPTP or L2TP with IPsec, and how to monitor active sessions. Future work may include better packet filtering and ARP cache integration.
This document discusses the Heartbleed bug in OpenSSL and the creation of LibreSSL as a more secure alternative. It notes that 17% of HTTPS servers were vulnerable to Heartbleed, which allowed attackers to steal passwords, credit cards, and other private data from server memory. LibreSSL was created to have fewer lines of code, modern coding practices, and fewer portability workarounds than OpenSSL to address bugs like Heartbleed. The document emphasizes fixing bugs quickly and not reinventing standard library functions.
LibreSSL is a version of the TLS/crypto stack forked from OpenSSL in 2014, with goals of modernizing the codebase, improving security, and applying best practice development processes.
Primary development occurs inside the OpenBSD source tree with the usual care the project is known for. On a regular basis the code is re-packaged for portable use by other operating systems.
OpenSSH is a free SSH implementation used for secure communications and file transfers. It provides strong cryptography, authentication methods, and allows for features like port forwarding, X11 forwarding, and file transfers. OpenSSH uses a modular structure which separates the transport, authentication, and connection protocols. This makes it more secure than the original SSH version 1, especially against man-in-the-middle attacks. The OpenSSH codebase focuses on security through techniques like input validation, sandboxing, and process separation between the monitoring and slave processes.
Relayd is a daemon to relay and dynamically redirect incoming connections to a target host.
Its main purposes are to run as a load-balancer, application layer gateway, or transparent proxy.
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol.
Started out of dissatisfaction with other implementations, OpenSMTPD nowadays is a fairly complete SMTP implementation.
Ssh è lo standard de-facto nelle comunicazioni sicure, questa è una breve ma esaustiva introduzione alle caratteristiche del programma e al suo utilizzo.
Il protocollo ipv6 è la nuova versione del protocollo ipv4, la base di internet così come lo conosciamo ora.
Sul protocollo ipv6 si baserà l'internet del futuro.
Astronaut is an integrated marketing agency, providing a multi-discipline service for the world wide tourism industry with the aim to attract more Chinese travelers.
Our international experienced team of marketing professionals, managed by Austrian Astronaut founder Michael Kaltenhauser, provides a high standard of quality work and reliable services in China.
Charidy Evans is an accomplished business analyst with over 13 years of experience seeking a new rewarding position. She has advanced skills in Excel, Word, PowerPoint, SQL, UNIX, AS/400, FTP, SFTP, PGP and Binary methods. In her current role as a Systems Operations Analyst at Fidelity Information Services since 2010, she provides second level support for production issues, manages production issue lifecycles, and ensures job processes meet SLA compliance. Prior to this, she held roles as a Member-Technical Staff at Verizon Wireless and Business Analyst roles at Alltel Wireless and Verizon Wireless where she supported various systems, performed security setup and technical support, and facilitated classroom training.
El documento presenta información sobre diferentes elementos y conceptos relacionados con redes de computadores. Define términos como patch panel, tester de red, norma 568A-568B, router, par trenzado, jack RJ45, switch, ponchadora de impacto y cable UTP. Explica brevemente el uso y características de cada uno de estos componentes de una red.
O documento descreve os 8 planetas do Sistema Solar e suas principais características em poucas frases: Mercúrio é o planeta mais próximo e quente do Sol; Vênus possui atmosfera densa de dióxido de carbono; a Terra é o único planeta habitável onde vivemos.
Este documento presenta información sobre dos estudiantes, Julian Rojas y Paulo Romero, que están inscritos en el curso 905 de informática en el Colegio Nacional Nicolas Esguerra durante el año 2012.
The document is a regulation from the Polish Ministry of Environment dated [DATE] that amends acceptable noise levels in the environment caused by various noise sources. It changes Tables 1 and 3 of a previous regulation from 2007 regarding maximum permissible noise levels expressed as indicators LAeqD and LAeqN for short-term exposure, and as indicators LDWN and LN for long-term noise policy. The amended tables set new noise limits for various areas including hospitals, residential areas, recreation areas, and city centers.
OpenSSH is a free SSH implementation used for secure communications and file transfers. It provides strong cryptography, authentication methods, and allows for features like port forwarding, X11 forwarding, and file transfers. OpenSSH uses a modular structure which separates the transport, authentication, and connection protocols. This makes it more secure than the original SSH version 1, especially against man-in-the-middle attacks. The OpenSSH codebase focuses on security through techniques like input validation, sandboxing, and process separation between the monitoring and slave processes.
Relayd is a daemon to relay and dynamically redirect incoming connections to a target host.
Its main purposes are to run as a load-balancer, application layer gateway, or transparent proxy.
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard extensions. It allows ordinary machines to exchange e-mails with other systems speaking the SMTP protocol.
Started out of dissatisfaction with other implementations, OpenSMTPD nowadays is a fairly complete SMTP implementation.
Ssh è lo standard de-facto nelle comunicazioni sicure, questa è una breve ma esaustiva introduzione alle caratteristiche del programma e al suo utilizzo.
Il protocollo ipv6 è la nuova versione del protocollo ipv4, la base di internet così come lo conosciamo ora.
Sul protocollo ipv6 si baserà l'internet del futuro.
Astronaut is an integrated marketing agency, providing a multi-discipline service for the world wide tourism industry with the aim to attract more Chinese travelers.
Our international experienced team of marketing professionals, managed by Austrian Astronaut founder Michael Kaltenhauser, provides a high standard of quality work and reliable services in China.
Charidy Evans is an accomplished business analyst with over 13 years of experience seeking a new rewarding position. She has advanced skills in Excel, Word, PowerPoint, SQL, UNIX, AS/400, FTP, SFTP, PGP and Binary methods. In her current role as a Systems Operations Analyst at Fidelity Information Services since 2010, she provides second level support for production issues, manages production issue lifecycles, and ensures job processes meet SLA compliance. Prior to this, she held roles as a Member-Technical Staff at Verizon Wireless and Business Analyst roles at Alltel Wireless and Verizon Wireless where she supported various systems, performed security setup and technical support, and facilitated classroom training.
El documento presenta información sobre diferentes elementos y conceptos relacionados con redes de computadores. Define términos como patch panel, tester de red, norma 568A-568B, router, par trenzado, jack RJ45, switch, ponchadora de impacto y cable UTP. Explica brevemente el uso y características de cada uno de estos componentes de una red.
O documento descreve os 8 planetas do Sistema Solar e suas principais características em poucas frases: Mercúrio é o planeta mais próximo e quente do Sol; Vênus possui atmosfera densa de dióxido de carbono; a Terra é o único planeta habitável onde vivemos.
Este documento presenta información sobre dos estudiantes, Julian Rojas y Paulo Romero, que están inscritos en el curso 905 de informática en el Colegio Nacional Nicolas Esguerra durante el año 2012.
The document is a regulation from the Polish Ministry of Environment dated [DATE] that amends acceptable noise levels in the environment caused by various noise sources. It changes Tables 1 and 3 of a previous regulation from 2007 regarding maximum permissible noise levels expressed as indicators LAeqD and LAeqN for short-term exposure, and as indicators LDWN and LN for long-term noise policy. The amended tables set new noise limits for various areas including hospitals, residential areas, recreation areas, and city centers.
Что в наши дни значит слово Интернет? Современная жизнь стала, наверное, уже просто немыслимой без него. Всемирная сеть влилась в нашу жизнь, став ее неотъемлемым звеном в общении, пополнении своих знаний, развлечении. С развитием компьютерных технологий и их доступностью широкой массе людей, Интернет, бесспорно, стал мощнейшим инструментом XXI века. Кстати говоря, на сегодняшний день число пользователей по всему миру превышает 2 млрд. человек.
Но только ли положительные аспекты присущи Интернету? Ведь мощнейший инструмент также является мощнейшим оружием. Знакомство детей и молодежи с вредоносными источниками информации, манипулирование массовым сознанием, киберзависимость, кибершпионаж, мошенничество, и далеко не только это - актуальнейшие проблемы современного общества в целом.
Так что же в действительности представляет собой Всемирная сеть? Цель моего проекта - разобраться в переплетении плюсов и минусов Интернета, осветить их кратко и, на мой взгляд, реалистично. А под конец работы, так сказать, на "десерт", я собираюсь ознакомить вас с понятиями "хакер" и "крэкер", что, полагаю, будет интересно.
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