Syntax highlighting of 46f5f80 ~( linux/network)
= Network = <<TableOfContents()>> == IP-адрес == Глобальный IP [[https://www.cyberciti.biz/faq/how-to-find-my-public-ip-address-from-command-line-on-a-linux/|link|class=" moin-https"]] {{{#!highlight bash # --- MY Global IP host myip.opendns.com resolver1.opendns.com # --- or dig +short myip.opendns.com @resolver1.opendns.com # --- or dig TXT +short o-o.myaddr.l.google.com @ns1.google.com # --- or dig +short txt ch whoami.cloudflare @1.0.0.1 # --- MY IPv6 address dig -6 TXT +short o-o.myaddr.l.google.com @ns1.google.com }}} Локальный IP {{{#!highlight bash # Ethernet контроллеры lspci | grep Ethernet # сетевые интерфейсы, IP-адреса и многое другое ifconfig # быстрый просмотр всех доступных интерфейсов ip a # более подробная информация об интерфейсах sudo lshw -class network }}} == Порты == Удаленные порты {{{#!highlight bash # --- nc # проверка открытия порта 22 nc -zvw3 example.com 22 # nc: connect to example.com port 22 (tcp) failed: Connection refused nc -zvw3 example.com 2281 # Connection to example.com 2281 port [tcp/*] succeeded! # --- nmap nmap example.com -p 443 # Starting Nmap 7.70 ( https://nmap.org ) at 2019-07-27 08:04 MSK # Nmap scan report for example.com (x.x.x.x) # Host is up (0.0041s latency). # PORT STATE SERVICE # 443/tcp closed https # Nmap done: 1 IP address (1 host up) scanned in 13.04 seconds # описание STATE см. по ссылке https://nmap.org/man/ru/man-port-scanning-basics.html }}} Локальные порты {{{#!highlight bash netstat -ant Активные соединения с интернетом (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN sudo netstat -tapen Активные соединения с интернетом (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program name tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN 0 20930 1513/dnsmasq tcp 0 0 127.0.0.1:5432 0.0.0.0:* LISTEN 121 19019 1492/postgres }}} == Сетевые утилиты == === curl === {{{#!highlight bash # # Basic Auth # curl --user name:password http://www.example.com curl --proxy-user proxyuser:proxypassword curl.haxx.se # GET request с user-agent и follow-redirect curl -A "Mozilla/5" -L https://s3.example.com # # Post Request # curl --user user:secret \ -H "Content-type: application/json" \ -X POST \ -d '{"company": {"name": "xxx", "number": "00000", "country": "Russian Federation", "url": "http://yandex.ru"}}' \ http://localhost:3000/companies # # Pretty Output # curl -H "Content-type: application/json" http://localhost:3000/companies # {"status":"ok","result":[{"id":1,"name":"! LTD","number":"08209948","country":"United Kingdom","url":"http://business.data.gov.uk/id/company/08209948"},{"id":2,"name":"!? LTD","number":"11399177","country":"United Kingdom","url":"http://business.data.gov.uk/id/company/11399177"}, ... sudo snap install jq curl -H "Content-type: application/json" http://localhost:3000/companies | jq # { # "status": "ok", # "result": [ # { # "id": 1, # "name": "! LTD", # "number": "08209948", # "country": "United Kingdom", # "url": "http://business.data.gov.uk/id/company/08209948" # }, # { # ... }}} === ping === Команда ''ping'' - в образах ''docker'' обычно отсутствует {{{#!highlight bash apt-get update apt install iputils-ping }}} == Конфигурация сети == === Ethernet === [[https://help.ubuntu.com/lts/serverguide/network-configuration.html.ru|Настройки сети|class=" moin-https"]] [[https://www.cyberciti.biz/faq/linux-setup-default-gateway-with-route-command/|Linux setup default gateway with route command|class=" moin-https"]] {{{#!highlight bash # настройка интерфейса sudo ethtool eth0 # Управление NetworkManager через консоль nmcli # статус wifi nmcli r wifi [on/off] }}} Конфигурация интерфейсов {{{#!highlight bash # /etc/network/interfaces # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback auto eth0 # iface eth0 inet dhcp iface eth0 inet static address 192.168.137.1 netmask 255.255.255.0 network 192.168.137.0 gateway 192.168.137.1 dns-nameservers 8.8.8.8 }}} === WiFi === [[https://losst.ru/nasrojka-wifi-v-ubuntu|НАСТРОЙКА WIFI В UBUNTU|class=" moin-https"]] https://losst.ru/nasrojka-wifi-v-ubuntu [[https://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers|Installing Broadcom Wireless Drivers|class=" moin-https"]] https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1757008 https://github.com/cilynx/rtl88x2bu {{{#!highlight bash # конфигурация беспроводных интерфейсов iwconfig # отображение информации о WiFi контроллере lspci -vnn | grep Network }}}