Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)

Model

OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography

Misc

Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking Network Security in Computer Network Disadvantages of Extranet Difference Between TELNET and FTP Define Protocol in Computer Networks Guided Transmission Media in Computer Network What is a Gateway in a Computer Network IGMP in Computer Networks LAN Protocols in Computer Networks MAN Meaning in Computer Modulation Techniques in Computer Networks Switching in DCN TCP/IP Applications What is IGMP? What is Modem in Networking What is Non-Persistent CSMA Difference between Cell Splitting and Cell Sectoring Forouzen Computer Network Open Loop and Closed Loop Congestion Control Types of Cluster Computing WAP-Wireless Access Point What are the elements of the Transport Protocol Difference between Gateway and Switch Flow Control in Data Link Layer Body Area Network Flooding in Computer Network Token Ring in Computer Networks VoIP in Computer Networks What is Infrared Transmission Congestion Control Techniques Forward Error Correction (FEC) Switching Techniques What is Telnet in Computer Network What are the Types of IPv4 Addresses IEEE 802.6 (DQDB) IEEE 802.15.4 Technology What is HDLC (High-level Data Link Control)? What is SMS Hubbing in Telecom? Circuit Switching in Computer Networks Communication Satellites in Computer Networks Features of HTTP Protocol IMAP4 (Internet Message Access Protocol) Internet Services How to Set up a Wireless Router Internetwork Routing in Computer Networks Distributed Computing System Features of GSM The 802.11 MAC Sublayer Protocol What is IEEE 802.3? What are Hubs and Switches in Computer Networks? What is Modem in a Computer Network? What is multicasting in Computer Networks? GSM -The Mobile Station What is Network Server? Slotted Aloha in Computer Network What is Ethernet in Computer Networks What is Arpanet? Radio Access Network (RAN) TCP 3-Way Handshake Process PING SWEEP (ICMP SWEEP) Print Server Private IP Address Security Services in Computer Networks Protocol Data Unit (PDU) CSMA with Collision Avoidance (CSMA/CA) What is Gateway in Computer Network? Advantages of Networking Data Link Layer Design Issues DHCP in Computer Networks Internet Security Association and Key Management Protocol (ISAKMP) What is Switch Hub? Telnet Full form in Networking Multimedia Systems Quality of Service in Computer Networks What is Carrier Sense Multiple Access (CSMA)? What is Circuit Switching What is Duplex Network? What is Web Protocol Network LAN Technologies Classes in Computer Network Low-Density Parity Check (LDPC) Wireless Internet Service Providers(Wisps) What is Handshaking? Cache Server What Is WSN Network? Check Sum Error Detection Linear Bus Topology Functions of the Transport Layer Infrared Transmission in Computer Networks Digital Signal in Computer Network Digital Data Transmission in Computer Networks Define Checksum with Example Computer Network Security Requirements Brust Errors in Computer Network Back Side Bus (BSB) 2-Dimension Parity Check in Computer Network Router and Brouter Microwave Transmission in Computer Networks Magnetic Media in Computer Network A One-Bit Sliding Window Protocol CDMA-Near-Far Problem Reference Models in Computer Networks Uni-cast, Broadcast, and Multicast in Computer Networks Uses Of Bridges in Computer Networks What are Gateways in Computer Network? How to Set Up a Home Network – A 7-Step Guide GSM in Computer Networks Multicast Routing Protocols in Computer Networks Network Components Types of Ethernet in Computer Networks BGP vs.EIGRP-What's the difference? Green Cloud Computing and its Strategies Packet Switching Router in Computer Network Advantages and Disadvantages of Routers ATM Network Automatic Repeat ReQuest (ARQ) Static Routing Algorithms in Computer Network TDMA – Technology Data Link Layer services provided to the Network Layer Transmission Impairments in Computer Networks Types of Modems What are Elementary Data Link Layer Protocols What is an Ad-hoc Network? What is the IEEE 802.11 Wireless LAN Standards? What Is Tunneling in Computer Networks? What is Twisted Pair Cable Advantages of Unguided Media Ethernet Topology in Computer Network Optical Fiber Modes and Configurations Optical Sources in Optical Fiber Communication 4 Layers of TCP/IP Hierarchical Routing Algorithm in Computer Networks Meaning of Data Communication Metropolitan Area Network Responsibilities of Transport Layer The Functions of Hub in Networking Tree Topology in Computer Network Types of Connections in Computer Network Authentication in Computer Network Buffering in Computer Networks MAC Protocol and its Classification Difference between Circuit Switching and Packet Switching Difference between Session and Cookies Broadcasting in Computer Networks CDMA in Computer Networks CDMA-Technology Components of Computer Network CRC in Data Communication CSMA-CA Protocol in Computer Network Difference between LAN and VLAN DIFFERENCE BETWEEN PHYSICAL AND LOGICAL TOPOLOGY Difference between TDM and FDM Differences Between URL and IP Address Differentiate between Synchronous TDM and Asynchronous TDM in Computer Network Diffеrеntiate Bеtwееn Datagram Approach and Virtual Circuit in Computer Network FDDI in Computer Network Functions of Bridge IEEE 802.11 in Computer Networks Internetworking in Computer Networks MAC in Data Link Layer Mac Sub Layer in Computer Networks MAN Meaning in Computer Radio Wave Transmission Single Sign-On (SSO) Token Passing in Computer Network Types of Data Transmission Types of Transmission Media in Computer Networks Advantagеs and Disadvantagеs of Li-Fi Benefits of Client Server Computing Bus and its Types Characteristics of Analog Signals Characteristics of NOS Choke Packet in Congestion Control Congestion Control Policy CSMA/CA in Computer Network Data Communication and Transmission Techniques Data Compression in Computer Networks Diffеrеncе bеtwееn SSH and Tеlnеt Diffеrеncе bеtwееn Static IP Addrеss and Dynamic IP Addrеssa Fiber Distributed Data Interface Network Time Protocol(NTP) Routing in Adhoc Networks Working of DNS Time Division Multiplexing (TDM) Types of Packet Switching Types of Protocols Types of Transmission Technology Use of Bluetooth in Computer Networks What is BBS? What is Code Correction? IEEE 802.11 Wireless LAN What is Stateless Protocol? Advantages of Networking in Computers DHCP Protocol in Computer Networks Difference between UTP and STP Cable Explain FTP in Computer Network Explain Hierarchical Model Explain HTTP in Computer Network Explain Nested Structure with Example Open Systems Interconnection Model Parallel Database System SMTP in Computer Network Space Division Switching Transmission Control Protocol (TCP) Types of IP Address Types of Routing in Computer Networks What is Duplex Transmission Data Link Layer Protocols Network Layer Protocols Session Layer Protocols

What are Gateways in Computer Network?
2024-07-09 06:00:19

What are Gateways in Computer Network?

What are Gateways in Computer Network?

A gateway is a network node that connects two networks using dissimilar transmission methods. The network gateway, which makes up the majority of gateway types, works at OSI's third layer, or the network layer. A gateway can, however, work at any of the seven levels of the OSI model, depending on its functioning. Since the gateway should be the place at which all traffic between networks flows, it serves as the network's entrance and departure points. In a LAN, the gateway only handles internal communication between the nodes; a computer that stands in the way of two networks or programs. The gateway transforms data, communications, and information from one protocol or format to another. Some of the duties of a gateway may be carried out by a router. Communications between a corporate network and the Internet can be transferred through an Internet gateway. A gateway frequently serves as a protocol converter so that users may send and receive messages via the Internet since local-area networks (LANs) used by businesses sometimes employ protocols that are different from those of the Internet function or product that uses exclusive techniques to connect several systems.

What are Gateways in Computer Network?

Working Procedure of Gateway

Every network has a border that prohibits connection with anything other than those linked directly to it. As a result, a network needs a gateway's capabilities if it wishes to connect with objects, nodes, or networks that are located beyond that barrier. The combination of a router and a modem is frequently used to describe a gateway.

The gateway is a component of a network's edge that controls all data directed from the network, whether it is for internal or external use. The data packet is transmitted to the gateway and then routed to the destination using the most effective route when one network wishes to interact with another. The host network's internal pathways and the paths of any other networks found are maintained by a gateway along with routing data.

Types of Gateways

Here we are discussing some important types of Gateways

  1. Unidirectional Gateway: Data can only pass via unidirectional gateways in one direction. The destination node replicates changes made in the source node but not the other way around. They are tools for archiving.
  2. Bidirectional Gateway: Data can pass through bidirectional gateways in both directions. They are instruments for synchronization.
  3. Web application firewalls: This kind examines data at the application layer while filtering traffic to and from a web server.
  4. Gateways for cloud storage: These types transform storage requests into calls to various cloud storage provider APIs. It enables businesses to incorporate private cloud storage into apps without switching to a public cloud.
  5. API Gateway: Gateways that control traffic entering and leaving a service, a micro services-oriented architecture, or an XML-based web service are known as API, SOA, or XML gateways.
  6. Media gateways: This kind transforms data between the formats required by different types of networks.
  7. Email security gateways: These stop emails from being sent that violate business policy or are intended to convey sensitive information.
  8. VoIP trunk gateways: This kind enables the use of standard telephone equipment with a voice over IP (VoIP) network, including landlines and fax machines.

Features of gateway

  • The gateway controls all data entering or leaving a network from its position at its edge.
  • Between two distinct networks using various communication methods, it creates a route.
  • The function of a gateway is that of a protocol converter, ensuring interoperability between the many protocols used by the two separate networks.
  • A gateway's capacity to function at any OSI model layer sets it apart from other network devices.
  • Additionally, information on the communication networks' routing pathways is stored there.
  • A gateway node may be used in addition to a proxy server or firewall in an enterprise situation.
  • The typical form of a gateway is a node with several NICs (network interface cards) connecting to various networks. In addition, software can be used to configure it.
  • When sending data across networks, it employs packet switching technology.

Conclusion

The gateway serves as an access point to another network employing a distinct set of protocols. It is a shared link between a local area network and a wider system, or WAN. It basically functions as the messenger agent that carries data from one system to another after being interpreted in the first system.