---
utworzone: 2022-05-17
tag: wikipage
---
referencje:: [[Linux]]



# Komendy

## Lista interfejsów


```
ip link show
nmcli device status
nmcli connection show
```



## Włączyć port forwarding


```
sysctl -w net.ipv4.ip_forward=1
```



## Prędkość łącza


```
cat /sys/class/net/<interface>/speed
```



# Konfiguracja


## Wyłączenie systemd-resolv


```
sudo systemctl disable systemd-resolved
sudo systemctl stop systemd-resolved
```



## Włączyć port forwarding


### /etc/sysctl.conf


```
    net.ipv4.ip_forward = 1
    sysctl -w net.ipv4.ip_forward=1
```



## Serwer dhcp, dns

sudo apt install dnsmasq


### /etc/dnsmasq.conf

port=53

interface=enp0s25

dhcp-range=192.168.11.50,192.168.11.150,12h

dhcp-host=xx:xx:xx:xx:xx:xx,192.168.11.10


## Mostek

apt install bridge-utils


### /etc/network/interfaces.d/br0:


```
auto br0

iface br0 inet dhcp

bridge_ports enp0s3