Linux Networking-HOWTO

Total Page:16

File Type:pdf, Size:1020Kb

Linux Networking-HOWTO Linux Networking−HOWTO: Linux Networking−HOWTO: Table of Contents Linux Networking−HOWTO:............................................................................................................................1 Author: Joshua Drake poet@linuxports.com...........................................................................................1 1.Introduction...........................................................................................................................................1 2.Document History.................................................................................................................................1 3.How to use this HOWTO......................................................................................................................1 4.General Information about Linux Networking.....................................................................................1 5.Generic Network Configuration Information.......................................................................................1 6.Ethernet Information.............................................................................................................................2 7.IP Related Information..........................................................................................................................2 8.Advanced Networking with Kernel 2.2................................................................................................2 9.Using common PC hardware................................................................................................................2 10.Other Network Technologies..............................................................................................................3 11.Cables and Cabling.............................................................................................................................3 12.Glossary of Terms used in this document...........................................................................................3 13.Copyright............................................................................................................................................3 1. Introduction..........................................................................................................................................3 10. Other Network Technologies.............................................................................................................4 10.1 ARCNet...........................................................................................................................................4 10.2 Appletalk (AF_APPLETALK)........................................................................................................5 Configuring the Appletalk software...........................................................................................5 Exporting a Linux filesystems via Appletalk.............................................................................6 Sharing your Linux printer across Appletalk..............................................................................6 Starting the appletalk software...................................................................................................7 Testing the appletalk software....................................................................................................7 Caveats of the appletalk software...............................................................................................7 More information........................................................................................................................7 10.3 ATM.................................................................................................................................................7 10.4 AX25 (AF_AX25)...........................................................................................................................8 10.5 DECNet............................................................................................................................................8 10.6 FDDI................................................................................................................................................8 10.7 Frame Relay.....................................................................................................................................8 10.8 IPX (AF_IPX)................................................................................................................................12 10.9 NetRom (AF_NETROM)..............................................................................................................12 10.10 Rose protocol (AF_ROSE)..........................................................................................................13 10.11 SAMBA − `NetBEUI', `NetBios', `CIFS' support.......................................................................13 10.12 STRIP support (Starmode Radio IP)...........................................................................................13 10.13 Token Ring..................................................................................................................................14 10.14 X.25..............................................................................................................................................14 10.15 WaveLan Card.............................................................................................................................15 11. Cables and Cabling..........................................................................................................................15 11.1 Serial NULL Modem cable............................................................................................................15 11.2 Parallel port cable (PLIP cable).....................................................................................................16 11.3 10base2 (thin coax) Ethernet Cabling............................................................................................16 11.4 Twisted Pair Ethernet Cable..........................................................................................................17 12. Glossary of Terms used in this document........................................................................................17 13. Copyright.........................................................................................................................................19 2. Document History..............................................................................................................................20 i Linux Networking−HOWTO: Table of Contents 2.1 Feedback..........................................................................................................................................20 3. How to use this HOWTO...................................................................................................................20 3.1 Conventions used in this document.................................................................................................21 4. General Information about Linux Networking..................................................................................22 4.1 Linux Networking Resources..........................................................................................................22 4.2 Where to get some non−linux−specific network information.........................................................22 5. Generic Network Configuration Information....................................................................................23 5.1 What do I need to start ?..................................................................................................................23 Current Kernel source(Optional)..............................................................................................24 IP Addresses, an Explanation...................................................................................................24 5.2 Where should I put the configuration commands ?.........................................................................26 5.3 Creating your network interfaces.....................................................................................................27 5.4 Configuring a network interface. Kernels 2.0 and 2.2.....................................................................28 5.5 Configuring your Name Resolver....................................................................................................31 What's in a name ?....................................................................................................................32 What information you will need...............................................................................................33 /etc/resolv.conf..........................................................................................................................33 /etc/host.conf.............................................................................................................................34 /etc/hosts...................................................................................................................................34 Running a name server.............................................................................................................34 5.6 Configuring your loopback interface...............................................................................................35
Recommended publications
  • 1) What Is the Name of an Ethernet Cable That Contains Two
    1) What is the name of an Ethernet cable that contains two electrical conductors ? A coaxial cable 2) What are the names of the two common conditions that degrade the signals on c opper-based cables? Crosstal and attenuation 3) Which topology requires the use of terminators? Bus 4) Which of the following topologies is implemented only logically, not physical ly? Ring 5) How many wire pairs are actually used on a typical UTP Ethernet network? Two 6) What is the name of the process of building a frame around network layer info rmation? Data encapsulation 7) Which of the connectors on a network interface adapter transmits data in para llel? The System bus connector 8) Which two of the following hardware resources do network interface adapters a lways require? I/O port address and IRQ 9) What is the name of the process by which a network interface adapter determin es when it should transmit its data over the network? Media Access Control 10) Which bus type is preferred for a NIC that will be connected to a Fast Ether net network? PCI 11) A passive hub does not do which of the following? Transmit management information using SNMP 12) To connect two Ethernet hubs together, you must do which of the following? Connect the uplink port in one hub to a standard port on the other 13) Which term describes a port in a Token Ring MAU that is not part of the ring ? Intelligent 14) A hub that functions as a repeater inhibits the effect of____________? Attenuation 15) You can use which of the following to connect two Ethernet computers togethe r using UTP
    [Show full text]
  • IPS Signature Release Note V9.17.79
    SOPHOS IPS Signature Update Release Notes Version : 9.17.79 Release Date : 19th January 2020 IPS Signature Update Release Information Upgrade Applicable on IPS Signature Release Version 9.17.78 CR250i, CR300i, CR500i-4P, CR500i-6P, CR500i-8P, CR500ia, CR500ia-RP, CR500ia1F, CR500ia10F, CR750ia, CR750ia1F, CR750ia10F, CR1000i-11P, CR1000i-12P, CR1000ia, CR1000ia10F, CR1500i-11P, CR1500i-12P, CR1500ia, CR1500ia10F Sophos Appliance Models CR25iNG, CR25iNG-6P, CR35iNG, CR50iNG, CR100iNG, CR200iNG/XP, CR300iNG/XP, CR500iNG- XP, CR750iNG-XP, CR2500iNG, CR25wiNG, CR25wiNG-6P, CR35wiNG, CRiV1C, CRiV2C, CRiV4C, CRiV8C, CRiV12C, XG85 to XG450, SG105 to SG650 Upgrade Information Upgrade type: Automatic Compatibility Annotations: None Introduction The Release Note document for IPS Signature Database Version 9.17.79 includes support for the new signatures. The following sections describe the release in detail. New IPS Signatures The Sophos Intrusion Prevention System shields the network from known attacks by matching the network traffic against the signatures in the IPS Signature Database. These signatures are developed to significantly increase detection performance and reduce the false alarms. Report false positives at [email protected], along with the application details. January 2020 Page 2 of 245 IPS Signature Update This IPS Release includes Two Thousand, Seven Hundred and Sixty Two(2762) signatures to address One Thousand, Nine Hundred and Thirty Eight(1938) vulnerabilities. New signatures are added for the following vulnerabilities: Name CVE–ID
    [Show full text]
  • Evaluating Lora Physical As a Radio Link Technology for Use in a Remote-Controlled Electric Switch System for a Network Bridge
    Evaluating LoRa Physical as a Radio Link Technology for use in a Remote-Controlled Electric Switch System for a Network Bridge Radio-Node Abdullahi Aden Hassan / Rasmus Karlsson Källqvist KTH ROYAL INSTITUTE OF TECHNOLOGY ELECTRICAL ENGINEERING AND COMPUTER SCIENCE Acknowledgments We would like to thank our academic mentor Anders Västberg for helping us with the process of writing and carrying through this degree project, answering all of our questions, and for proof reading this report. We would like to thank Amin Azari for showing genuine interest in our project and for answering some math questions we had when calculating the radio link budget, and for discovering that the formula in a book we were using had a printing error which was initially causing our results to be wrong. Thank you to fellow students Michael Henriksson and Sebastian Kullengren for a thorough opposition to this report and for much helpful feedback in keeping the text readable and scientific. Thank you to Björn Pehrson for representing AMPRNet Sweden and giving us the opportunity to work on this project, financing the system prototype and for giving helpful feedback. Finally, we would like to thank program director Bengt Molin for teaching us much of what we know of embedded systems and for lending us equipment used in the development of the hardware prototype. i Abstract This report explores the design of a system for remotely switching electronics on and off within a range of at least 15 km, to be used with battery driven radio nodes for outdoor Wi-Fi network bridging. The application of the network bridges are connecting to remote networks, should Internet infrastructure fail during an emergency.
    [Show full text]
  • New Gateways (PDF
    Packet Network Notice Rev: 28-Nov-2011 Date: Nov 28, 2011 From: Santa Clara County ARES/RACES Packet Committee Subject: Packet Network Update – New AMPRnet and E-mail gateways Attention: All ECs, AECs, MACs and other Santa Clara County Packet Users This Packet Network Notice contains important information which affects your ability to access and use the county packet backbone. This update covers the following topics: • New AMPRnet Gateway • New E-mail Gateway Please read this information thoroughly and pass along to any packet users in your local area. New AMPRnet Gateway The AMPRnet is an AMateur Packet Radio network consisting of packet radio BBSs located worldwide. Local networks of BBSs are interconnected to other local networks through gateways. These gateways use IP-in-IP tunnels to connect to each other. AMPRnet IP addresses are allocated from the IP address block of 44.0.0.0/8. Once a BBS or local network of BBSs is connected to AMPRnet, each of the BBSs can reach any other BBS on the AMPRnet, and vice-versa. For example, in the State of Michigan, each county has a local network of one or more BBSs. Each county is connected to all other counties (and to the rest of the world) with AMPRnet connections. Here in California, we can use AMPRnet connections to reach other counties which do not have a radio path to our network. We have just started to reach out to other counties to work on making those connections. There are two primary uses for this connectivity: 1) Messaging: Messages can now be addressed to anyone at any of the AMPRnet BBSs with a simple and standard Internet-style address format: [email protected].
    [Show full text]
  • PCI20EX PCI Express (Pcie)
    PCI20EX PCI Express (PCIe) Bus ARCNET® Network Interface Modules INSTALLATION GUIDE INTRODUCTION The PCI20EX series of ARCNET network interface modules (NIMs) links PCI Express (PCIe) bus compatible computers with the ARCNET local area network (LAN). Since most PC motherboards have migrated from the legacy PCI and PCI-X Bus, a PCI Express style NIM is required. The PCI20EX series is compliant to the PCI Express Card Electromechanical Specification Revision 2.0 and both standard height and low-profile brackets are provided. The PCI Express interface allows for jumperless configuration and Plug and Play operation. The module operates with either an NDIS driver or a null stack driver in a Windows® environment. The PCI20EX incorporates the COM20022 ARCNET controller chip with enhanced features over the earlier generation ARCNET chips. New features include command chaining, sequential access to internal RAM, duplicate node ID detection and variable data rates up to 10 Mbps. Bus contention problems are minimized since the module’s interrupt and I/O base address are assigned through Plug and Play. The PCI20EX exploits the new features of the COM20022 which includes 10 Mbps communications utilizing the various EIA-485 transceiver options. Each PCI20EX module has two LEDs on the board for monitoring network operation and bus access to the module. It is equipped with an 8 position, general purpose DIP switch typically used to assign the ARCNET node address. Ultimately, the node address is configured via software so the DIP switch can also indicate user-defined functions such as data rate, cable interface, or master/slave status of the system.
    [Show full text]
  • Frequently Asked Questions
    Frequently Asked Questions Q. How can I use the city’s Wi-Fi network? A. BellevueConnect uses the Wi-Fi standard (also known as IEEE 802.11b or g). Your laptop may have wireless built-in, or you can add a Wi-Fi compatible network card to it. Most users can simply bring their wireless-enabled laptop computer or other wireless device and turn it on. Q. How do I connect to the internet through the wireless network? A. Wireless access points, located throughout the buildings, communicate with your wireless device. You should be able to connect anywhere in the public areas. When your wireless network card senses the BellevueConnect, the city’s Wi-Fi BellevueConnect signal, a message appears on the network, is open to all City Hall, South screen indicating the wireless network is available. If Bellevue Community Center, Highland there are multiple wireless networks detected, you Community Center, Crossroads will need to select the BellevueConnect network Community Center and North Bellevue to connect. Open your web browser and it should Q. Is my information safe while using wireless? Community Center visitors free of automatically connect to the Internet. A. BellevueConnect does not provide security or confidenti- charge. There are no preauthorization Q. Will I need any special settings or passwords to con- ality for your computer or data. Connecting your com- (or approval) requirements, although nect? puter to the Internet via BellevueConnect could exposes it you will be asked to accept a policy A. No. BellevueConnect is open to all users who accept the to the same viruses and other security risks as any Internet statement on acceptable use prior to City’s acceptable use policy.
    [Show full text]
  • Computer Networking in Nuclear Medicine
    CONTINUING EDUCATION Computer Networking In Nuclear Medicine Michael K. O'Connor Department of Radiology, The Mayo Clinic, Rochester, Minnesota to the possibility of not only connecting computer systems Objective: The purpose of this article is to provide a com­ from different vendors, but also connecting these systems to prehensive description of computer networks and how they a standard PC, Macintosh and other workstations in a de­ can improve the efficiency of a nuclear medicine department. partment (I). It should also be possible to utilize many other Methods: This paper discusses various types of networks, network resources such as printers and plotters with the defines specific network terminology and discusses the im­ nuclear medicine computer systems. This article reviews the plementation of a computer network in a nuclear medicine technology of computer networking and describes the ad­ department. vantages and disadvantages of such a network currently in Results: A computer network can serve as a vital component of a nuclear medicine department, reducing the time ex­ use at Mayo Clinic. pended on menial tasks while allowing retrieval and transfer­ WHAT IS A NETWORK? ral of information. Conclusions: A computer network can revolutionize a stan­ A network is a way of connecting several computers to­ dard nuclear medicine department. However, the complexity gether so that they all have access to files, programs, printers and size of an individual department will determine if net­ and other services (collectively called resources). In com­ working will be cost-effective. puter jargon, such a collection of computers all located Key Words: Computer network, LAN, WAN, Ethernet, within a few thousand feet of each other is called a local area ARCnet, Token-Ring.
    [Show full text]
  • ARCNET E.Pdf
    ARCNETâ. The universal, realtime capable fieldbus solution Take the lead with ARCNET ! AUG - ARCNET user group e. V. AUG - ARCNET user group e. V. CONTENTS 1 ARCNET, the universal, realtime capable Fieldbus Solution ____3 2 History________________________________ _________________ 4 3 Characteristics of modern Fieldbusses _____________________ 4 3.1 Topology ____________________________________________________ 5 3.1.1 Bus __________________________________________________________ 5 3.1.2 Star __________________________________________________________ 5 3.1.3 Tree__________________________________________________________ 6 3.2 Bus Access Management _______________________________________ 7 3.3 Transmission Protocol__________________________________________ 8 3.4 Transmission Integrity __________________________________________ 8 3.5 Physical Interface _____________________________________________ 8 3.6 Implementations ______________________________________________ 9 4 ARCNET________________________________ _______________ 10 4.1 Topology ___________________________________________________ 10 4.2 Bus Access Management ______________________________________ 10 4.3 Protocol Components _________________________________________ 10 4.4 Network Access______________________________________________ 13 4.4.1 Passing on the Token____________________________________________ 13 4.4.2 Data Transfer _________________________________________________ 13 4.4.3 Broadcast Message_____________________________________________ 13 4.5 Configuration Mechanisms
    [Show full text]
  • 1.0 Intro to Openbsd Information Pertaining to Any -Current Options, It Only Attempts to Track 2.0 Other Resources What Has Been Released on CD
    OpenBSD Frequently Asked Questions Frequently Asked Questions OpenBSD FAQ This FAQ is maintained with information pertaining to the 2.6 release of OpenBSD. Not all information presented here may be accurate for older Language: [en] releases of OpenBSD. Information for previous releases is available. You [es] [de] should check http://www.openbsd.com/errata.html for important updates. The FAQ follows release versions of OpenBSD. It will not have 1.0 Intro to OpenBSD information pertaining to any -current options, it only attempts to track 2.0 Other resources what has been released on CD. This is so there is no confusion as to 3.0 Obtaining OpenBSD which versions are being documented here. 4.0 Installation Guide This FAQ will take you through most critical steps to setting up your own 5.0 Kernel Configuration OpenBSD system. The addressed questions range from new to advanced 6.0 Networking Setup users. Hopefully you will find this FAQ useful. Downloadable versions of 7.0 Keyboard Controls the FAQ are available in text and PDF. These versions may not be as 8.0 General Questions up-to-date as the HTML versions available from this page. 9.0 Migrating from Linux ● Text Version 10.0 System Management ● PDF Version 11.0 Performance Tuning 12.0 For Advanced Users Any questions can be directed to: [email protected] 13.0 IPSec 2.6, 2.7 Recently updated or added FAQ's 14.0 Disk setup ● 6.1.1 - Identifying and Setting Up Your Network Interfaces - Changed to reflect the movment of some drivers to the dc* driver.
    [Show full text]
  • Sistemas Informáticos Curso 2005-06 Sistema De Autoconfiguración Para
    Sistemas Informáticos Curso 2005-06 Sistema de Autoconfiguración para Redes Ad Hoc Miguel Ángel Tolosa Diosdado Adam Ameziane Dirigido por: Profª. Marta López Fernández Dpto. Sistemas Informáticos y Programación Grupo de Análisis, Seguridad y Sistemas (GASS) Facultad de Informática Universidad Complutense de Madrid AGRADECIMIENTOS: Queremos agradecer la dedicación de la profesora Marta López Fernández, Directora del presente Proyecto de Sistemas Informáticos, y del resto de integrantes del Grupo de Análisis, Seguridad y Sistemas (GASS) del Departamento de Sistemas Informáticos y Programación de la Universidad Complutense de Madrid, y de forma muy especial a Fabio Mesquita Buiati y a Javier García Villalba, Miembro y Director del citado Grupo, respectivamente, por el asesoramiento y las facilidades proporcionadas para el buen término de este Proyecto. 2 Índice RESUMEN ....................................................................................................................... 5 ABSTRACT ..................................................................................................................... 6 PALABRAS CLAVE....................................................................................................... 7 1-INTRODUCCIÓN....................................................................................................... 8 1.1- MOTIVACIÓN ......................................................................................................... 8 1.2 – OBJETIVO .............................................................................................................
    [Show full text]
  • Downloader and Job Monitor)
    Fiery® EXP4110 SERVER & CONTROLLER SOLUTIONS Welcome © 2005 Electronics for Imaging, Inc. The information in this publication is covered under Legal Notices for this product. 45051573 22 September 2005 WELCOME 3 WELCOME This Welcome document provides system requirements and an overview of how to set up the Fiery EXP4110 so that you can begin printing. It describes the initial tasks you must perform and points you to sections in the user documentation where the procedures are described in further detail. This document also provides a description of the user documents on the User Documentation CD and instructions on printing them. This document assumes that you have already installed the printer components. Details about the printer, the network, remote computers, software applications, and Microsoft Windows are beyond the scope of this document. Terminology and conventions This document uses the following terminology and conventions. Term or convention Refers to Aero Fiery EXP4110 (in illustrations and examples) Fiery EXP4110 Fiery EXP4110 Mac OS Apple Mac OS X Printer Xerox 4110 Titles in italics Other documents in this set Windows Microsoft Windows 2000, Windows XP, Windows Server 2003 Topics for which additional information is available by starting Help in the software Tips and information Important information Important information about issues that can result in physical harm to you or others WELCOME 4 About the documentation This document is part of a set of documentation provided to users and system administrators of Fiery EXP4110. The documents are on the User Documentation CD and are in PDF (Portable Document Format). These files can be viewed online or printed using Adobe Reader.
    [Show full text]
  • The Apple Ecosystem
    APPENDIX A The Apple Ecosystem There are a lot of applications used to manage Apple devices in one way or another. Additionally, here’s a list of tools, sorted alphabetically per category in order to remain vendor agnostic. Antivirus Solutions for scanning Macs for viruses and other malware. • AVG: Basic antivirus and spyware detection and remediation. • Avast: Centralized antivirus with a cloud console for tracking incidents and device status. • Avira: Antivirus and a browser extension. Avira Connect allows you to view device status online. • BitDefender: Antivirus and malware managed from a central console. • CarbonBlack: Antivirus and Application Control. • Cylance: Ransomware, advanced threats, fileless malware, and malicious documents in addition to standard antivirus. • Kaspersky: Antivirus with a centralized cloud dashboard to track device status. © Charles Edge and Rich Trouton 2020 707 C. Edge and R. Trouton, Apple Device Management, https://doi.org/10.1007/978-1-4842-5388-5 APPENDIX A THe AppLe ECOSYSteM • Malware Bytes: Antivirus and malware managed from a central console. • McAfee Endpoint Security: Antivirus and advanced threat management with a centralized server to track devices. • Sophos: Antivirus and malware managed from a central console. • Symantec Mobile Device Management: Antivirus and malware managed from a central console. • Trend Micro Endpoint Security: Application whitelisting, antivirus, and ransomware protection in a centralized console. • Wandera: Malicious hot-spot monitoring, jailbreak detection, web gateway for mobile threat detection that integrates with common MDM solutions. Automation Tools Scripty tools used to automate management on the Mac • AutoCasperNBI: Automates the creation of NetBoot Images (read: NBI’s) for use with Casper Imaging. • AutoDMG: Takes a macOS installer (10.10 or newer) and builds a system image suitable for deployment with Imagr, DeployStudio, LANrev, Jamf Pro, and other asr or Apple Systems Restore-based imaging tools.
    [Show full text]