Try   HackMD

Практическая работа №1

Базовая работа с виртуальной лабораторией

1.1 Чтобы создать устройство, нужно либо нажать ПКМ по пустому месту на топологии, либо пройти в левое меню

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1.2 Выбрать Node

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1.3 Выбрать нужный template

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1.4 И настроить его

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1.5 При создании сетевых устройств Cisco IOL обращайте внимание на Image. L2 создаст коммутатор

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1.6 А L3 image создаст роутер

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1.7 Не забывайте указывать количество портгрупп. Одна портгруппа = 4 сетевых интерфейса

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1.8 При создании объектов есть и другие пункты. Если необходимо поместить текст на топологию, воспользуйтесь объектом Text

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1.9 Чтобы расположить облако на топологии (это выход во внешнюю сеть), создайте объект Network

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1.10 В настройках выберите Cloud1 и нажмите Save

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Задача: создать топологию в соответствии с рисунком вначале статьи. Соблюдать имена интерфейсов

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2.1 Зайдите в Switch7 и перейдите в привилегированный режим

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2.2 Просмотрите его таблицу коммутации

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2.3 Настроим имя устройства. Перейдём в режим конфигурации

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2.4 Укажем имя устройства

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2.5 Настроим ip адрес для управления switch7

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2.6 Создадим учетную запись для пользователя и включим модель аутентификации

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2.7 Выйдем из режима конфигурации и сохраним конфиг

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2.9 Настроим адрес внутреннего интерфейса е0/1. Это будет адрес шлюза по умолчанию для наших устройств

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show ip nat translation |проверка текущих трансляций попробуйте обратиться с любого устройства из сети 192.168.1.0 к внешним адресам. Если NAT работает, в выводе этой команды вы увидите трансляции

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Image Not Showing Possible Reasons
  • The image file may be corrupted
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3.1 С помощью wireshark можно захватывать трафик на нужных интерфейсах топологии. Захватите трафик с интерфейса e0/0 Switch7

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Задача: Обнаружьте ARP трафик. Для этого используйте в фильтре wireshark фильтрацию по ARP

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