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Network Setup

/etc/network/interfaces

auto eth0
iface eth0 inet static
  address 192.168.6.1
  netmask 255.255.255.0

auto wlan0
iface wlan0 inet static
  hostapd /etc/hostapd/hostapd.conf
  post-up service dnsmasq restart
  address 192.168.4.1
  netmask 255.255.255.0

auto wlan1
iface wlan1 inet dhcp
  post-up iptables-restore < /etc/iptables/rules.v4
  wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

Prevent Networkmanager from managing the interface

/etc/NetworkManager/NetworkManager.conf

# ...

[keyfile]
unmanaged-devices=c6:f9:24:1d:65:f3

DHCP​

/etc/dnsmasq.conf

# To disable DNS
port=0

# To enable DNS
# port=0
server=8.8.8.8

dhcp-range=192.168.0.50,192.168.0.150,12h

Resolvconf​

/etc/resolvconf/resolv.conf.d/base

nameserver 8.8.8.8
nameserver 8.8.4.4

Update:

sudo resolvconf -u

systemd-resolved​

Disable:

sudo systemctl disable systemd-resolved.service

Test DNS Server:

host www.google.com 192.168.3.1

WPA Supplicant​

network={
    ssid="My-Wifi"
    psk="my-password"
}

IP Tables​

sudo iptables -A FORWARD -i <src> -o <dst> -j ACCEPT
sudo iptables -A FORWARD -i <dst> -o <src> -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -t nat -A POSTROUTING -o <src> -j MASQUERADE

Hostapd​

interface=wlan1
ssid=<ssid>
country_code=DE
hw_mode=g
channel=1
wpa=2
wpa_passphrase=<wpa-passphrase>

## Key management algorithms ##
wpa_key_mgmt=WPA-PSK
 
## Set cipher suites (encryption algorithms) ##
## TKIP = Temporal Key Integrity Protocol
## CCMP = AES in Counter mode with CBC-MAC
wpa_pairwise=TKIP
rsn_pairwise=CCMP
 
## Shared Key Authentication ##
auth_algs=1
 
## Accept all MAC address ###
macaddr_acl=0

SSH

~/.ssh/config

Host jetson
  HostName 192.168.178.38
  User jetson

Inputrc

~/.inputrc

## arrow up
"\e[A":history-search-backward
## arrow down
"\e[B":history-search-forward

Disable Error Report

/etc/default/apport

enabled=0

Build wifi-driver for Jetson Nano​

Download Driver.

make clean
ARCH=arm64 make -j4
sudo cp 88xbu.ko /lib/modules/<kernel-version>/kernel/drivers/net/wireless
sudo depmod -a
sudo modprobe 88x2bu.ko

Source