# Networking

#### Hosts

```bash
sudo vim /etc/hosts
```

```bash
127.0.0.1       localhost
127.0.1.1       <hostname>.local <hostname>

# The following lines are desirable for IPv6 capable hosts
::1             localhost ip6-localhost ip6-loopback
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters
ff02::3         ip6-allhosts

#
192.168.1.254   mabbox.bytel.fr

# local
192.168.1.10    bikinibottom
192.168.1.11    bob
192.168.1.12    carlo
192.168.1.13    gary
192.168.1.14    sandy
192.168.1.15    krabs
192.168.1.16    sheldon
192.168.1.17    bernie

#
192.168.1.53    recalbox

# Optional
# Added by Docker Desktop
# To allow the same kube context to work on the host and the container:
127.0.0.1       kubernetes.docker.internal
# End of section

```

#### Debian

```bash
sudo vim /etc/network/interfaces
```

```bash
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/* 
```

```bash
sudo vim /etc/network/interfaces.d/local
```

```bash
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
# allow-hotplug end0
auto end0
iface end0 inet static
    address 192.168.1.12
    netmask 255.255.255.0
    gateway 192.168.1.254
    dns-nameservers 45.90.28.0
    dns-nameservers 45.90.30.0
# This is an autoconfigured IPv6 interface
# iface end0 inet6 auto
```

```bash
sudo systemctl restart networking.service
```

#### Ubuntu

```bash
sudo vim /etc/netplan/50-cloud-init.yaml
```

```yaml
network:
  version: 2
  renderer: networkd
  ethernets:
    end0:
      dhcp4: no
      addresses:
        - 192.168.1.13/24
      routes:
        - to: default
          via: 192.168.1.254
      nameservers:
        addresses: [45.90.28.0, 45.90.30.0]
```

```bash
sudo netplan apply
```

#### DNS Servers

| DNS | Adresses IPv4 | Adresses IPv6 |
| --- | --- | --- |
| 1 [**Cloudflare 1.1.1.1**] | 1.1.1.1<br />>1.0.0.1 | 2606:4700:4700::1111<br />2606:4700:4700::1001 |
| 2 [Cisco OpenDNS Home](https://www.opendns.com/) | 208.67.222.222, 208.67.220.220 | 2620:119:35::35, 2620:119:53::53 |
| 3 [Neustar UltraDNS Public](https://www.publicdns.neustar/) | 64.6.64.6, 64.6.65.6 | 2620:74:1b::1:1, 2620:74:1c::2:2 |
| 4 [NextDNS](https://nextdns.io/fr) | 45.90.28.0, 45.90.30.0 | 2a07:a8c0::, 2a07:a8c1::|
| 5 [Google Public DNS](https://developers.google.com/speed/public-dns) | 8.8.8.8, 8.8.4.4 | 2001:4860:4860::8888, 2001:4860:4860::8844 |
| 6 [**Quad9**](https://www.quad9.net/) | 9.9.9.9, 149.112.112.112 | 2620:fe::fe, 2620:fe::9 |
| 7 [Comodo Secure DNS](https://www.comodo.com/secure-dns/)  | 8.26.56.26, 8.20.247.20 | – |
| 8 [Yandex.DNS](https://dns.yandex.com/ ) | 77.88.8.8, 77.88.8.1 | 2a02:6b8::feed:0ff, 2a02:6b8:0:1::feed:0ff |
| 9 [SafeDNS](https://www.safedns.com/fr/) | 195.46.39.39, 195.46.39.40 | 2001:67c:2778::3939, 2001:67c:2778::3940 |