Networking Fundamentals 1 Introduction to networking Email Phone

Networking Fundamentals 1. Introduction to networking Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Въведение в работата на компютърните мрежи Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Въведение в работата на компютърните мрежи Теми: 1. 2. 3. 4. 5. 6. 7. 8. 9. OSI модел TCP/IP модел Протоколи Видове устройства OSI Layer 1 – Physical OSI Layer 2 – Data-Link OSI Layer 3 – Network OSI Layer 4 - Transport OSI Layer 5 - Session Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI модел TCP/IP модел Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Model Въпрос: Как работи всичко това заедно? Отговор: Подчинява се на общи правила. И следва един абстрактен модел: OSI ( Open Systems Interconnect ) ISO/IEC 7498 -1 / 1984 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Model Абстрактни слоеве: Протоколи: E-mail POP/SMTP POP/25 TCP IPv 4 Ethernet Cable CAT-5 e Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking De Enc cap aps sul ula ati tio n on OSI Model 00011101010001010111010101 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Encapsulation: OSI Model L 7 H DATA L 6 H L 6 PDU DATA L 5 H L 5 PDU DATA L 4 H L 4 PDU DATA L 3 H L 2 H L 7 PDU L 3 PDU DATA L 2 T …………. 0100011010010011000101011101010011101101…………. L 2 PDU Bits: 1 & 0 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Model Protocol Data Units: HOST Layers DATA SEGMENT MEDIA Layers PACKET FRAME BITS Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Model Layers: End User Interaction POP SMTP Skype Syntax; Encrypt / Decrypt ASCII JPEG MP 3 Sync & send to Ports RPC NFS SQL Net. BIOS Segmentation, Flow Control TCP UDP ICMP Routing, IP address IPv 4 IPv 6 IPX ARP Frame Control, Sequencing HDLC PPP SLIP Data Encoding, Bits Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking TCP/IP Model OSI TCP/IP Application Transport Internet Network Access Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking TCP/IP Model TCP/IP Protocol Stack Application HTTP FTP SMTP Telnet SSH DNS NTP SSL/TLS TACACS+ etc. DNS SNMP TACACS+ traceroute DHCP RIP Transport TCP UDP Internet Network Access Ping tracert ICMP IP Ethernet/802. 3 Token Ring/802. 5 FDDI ISDN Frame Relay ATM Wireless x. DSL Fiber channel Cable modem DWDM SONET PPP SLIP HDLC DS 0/T 1/T 3 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884 ARP

Networking Fundamentals 1. Introduction to networking Следва: Видове устройства Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Видове устройства Ethernet Switches ( комутатори ) • • • End User Connectivity High Port Density L 2/L 3 Functionality VLANs, Qin. Q, Voice Fast Switching Po. E, Po. E+, Stacking Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Видове устройства Routers ( Маршрутизатори ) • • • Site to Site Connectivity Modular L 3 -L 4 Functionality L 1/L 2 Termination High Throughput Redundancy Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Видове устройства Firewalls, NG Firewalls ( Защитни стени ) • • • Deep Packet Inspection High PPS, Session count VPN Anti-virus, Anti-spam Threat Prevention Redundancy - A/A, A/P Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI Layer 1 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Медни кабели, стандарти • • UTP ( Unshielded Twisted Pair ) STP ( Shielded Twisted Pair ) FTP ( Foiled Twisted Pair ) SFTP ( Shielded & Foiled Twisted Pair ) RJ 45 Email: Phone: millanov@i-learning. bg +359 889 229 884 Лектор: Любомир Миланов

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Медни кабели, категория Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Радио, стандарти Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Оптика, стандарти Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Модулация, демодулация MODEM Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Мултиплексиране, демултиплексиране DWDM - Dense Wavelength Division Multiplexing Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 1 PHYSICAL Физически топологии Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI Layer 2 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK Ethernet, IEEE 802. 3 Institute of Electrical & Electronics Engineers Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK 1 bit = 0 или 1 1 Byte = 8 bits = 1 octet SOURCE Ethernet Frame ( рамка ) Address = MAC Frame Check Sum DESTINATION Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK LLC & MAC Logical Link Control LLC Protocol Multiplexing Flow & Error Control MAC Hardware Addressing CSMA / CD DATA LINK LAYER Media Access Control Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Видове комуникации OSI Layer 2 DATA LINK FTP, HTTP Email: Phone: millanov@i-learning. bg +359 889 229 884 ARP Multicast Group Лектор: Любомир Миланов

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK Видове комуникации MDI/MDIX – Medium Dependent Interface / Medium Dependent Interface Crossover Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK MAC Address 00 -60 -2 F-3 A-07 -BC 00: 60: 2 F: 3 A: 07: BC 0060. 2 F 3 A. 07 BC Windows CMD > ipconfig /all Linux Shell > ifconfig CISCO devices Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK SRC MAC Address DST MAC SRC MAC DST MAC Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK CSMA / CD механизъм *Само при Half-Duplex Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 2 DATA LINK Collision Domain Broadcast Domain Маршрутизаторът разделя на Broadcast домейни Комутаторът разделя на Collision домейни Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI Layer 3 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 3 NETWORK Internet Protocol, version 4 ( IPv 4 ) История: • • 1970 – ARPANET започва да използва Network Control Protocol 1972 – Измислен е Telnet протоколът 1973 – FTP протоколът влиза в употреба 1974 – TCP протоколът получава спецификация 1981 – IP протоколът получава спецификация 1983 – ARPANET става IP 1984 – DNS протоколът получава спецификация 1993 – Измислен е WWW ARPANET – Advanced Research Projects Agency Network, US DOD Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 3 NETWORK IPv 4 Header Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 3 NETWORK IPv 4 Address, логически адрес 192. 168. 100. 5 11000000 10101000 01100100 00000101 --------. ---- 4 октета ( 32 бита ) Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 3 NETWORK IP Routing, маршрутизация • Static Routing • Dynamic Routing • • • RIP OSPF EIGRP BGP IS-IS Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI Layer 4 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 4 TRANSPORT TCP и UDP протоколи Transmission Control Protocol TCP Connection Oriented Flow & Error Control UDP Connectionless Fast Delivery TRANSPORT LAYER User Datagram Protocol Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 4 TRANSPORT TCP Header Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking TCP / UDP портове OSI Layer 4 TRANSPORT • 0 – 1023: • 1024 – 49151: • 49152 – 65535: Well known Registered Dynamic Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 4 TRANSPORT SYN ACK RST FIN TCP 3 -Way Handshake Синхронизация Потвърждение Ресет Край Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 4 TRANSPORT TCP Window • Ускорява преноса • Динамично договаряне Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Следва: OSI Layer 5 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 5 SESSION OSI TCP/IP Application Transport Internet Network Access Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking OSI Layer 5 SESSION Сесия Session Socket • 48. 104. 55. 10: 80 Socket 195. 68. 201. 44: 62001 207. 50. 160. 18: 45007 Dynamic: 62001 80: HTTP Windows CMD: netstat -a Dynamic: 45007 Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884

Networking Fundamentals 1. Introduction to networking Край. Лектор: Любомир Миланов Email: Phone: millanov@i-learning. bg +359 889 229 884