Post

Networking

Posted Updated
By Senad Dizdarević 1 min read

Change Hostname

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hostnamectl set-hostname newhostname

Change IP Address in Ubuntu 20.04 LTS

  1. Create a new file /etc/netplan/01-netcfg.yaml
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    network:
  version: 2
  renderer: networkd
  ethernets:
 ens3:
   dhcp4: no
   addresses:
     - 192.168.121.221/24
   gateway4: 192.168.121.1
   nameservers:
       addresses: [8.8.8.8, 1.1.1.1]
  2. Apply changes
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    netplay apply

Change IP Address in Ubuntu 22.04 LTS

gateway4 has been depricated in ubuntu 22.04 release and routes is used instead!

  1. Create a new file /etc/netplan/00-installer-config.yaml
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    network:
  ethernets:
 enp5s0:
   dhcp4: false
   addresses: [192.168.1.37/24]
   routes:
     - to: default
       via: 192.168.1.1
   nameservers:
     addresses: [8.8.8.8,192.168.1.1]
  version: 2

    1.1 Create /etc/netplan/00-installer-config-wifi.yaml

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    network:
  version: 2
  wifis:
 wlp9s0:
   access-points:
     SSID:
       password: 'PASS'
   dhcp4: true
  2. Apply changes
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    netplay apply

Get hardware info

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sudo lshw -short

Check open ports and apps useing them

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sudo ss -tulwnp | grep LISTEN
Linux, Linux Basics
linux ip
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