I am playing a bit with the Orange Pi Zero.
I want to use it as an internet browser with Firefox to surf on the Internet, without any problems to get an virus on my main PC.

Check which packets are already installed

dpkg-query -l
// or
apt list --installed
// or
dpkg --get-selections
// or
dpkg -l

Show all available packets

apt-cache search .
// or with search
apt-cache search vnc

Handy tools to install on Orange Pi Zero

apt-get install screen
apt-get install locate

Setup XFCE GUI on the Orange Pi Zero

apt-get install xfce4 xfce4-goodies
// Install missing fonts for the vncserver
apt-get install  xfonts-base
// Install the missing Icons for the Desktop
apt-get install gnome-icon-theme tango-icon-theme
// Install a VNC server to get remote access
apt-get install tightvncserver
apt-get install firefox-esr

Add swap space

fallocate -l 1G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
// add  following line to /etc/fstab
/swapfile none swap sw 0 0
// Set it up to aggressively swap 
sysctl vm.swappiness=80

Enable and setup the WiFi with the command prompt

use commandline program 'nmtui'

To add keepalive to your SSH sessions:
Add the following line to /etc/ssh/ssh_config file:

ServerAliveInterval 60

When trying to copy some data (About 25Mb) the connection over the WiFi , it suddenly stopped. When using the fixed Ethernet the problem does not show.  When using the WiFi without big data transfers the problem also does not show. Even not when running for a longer time with total more then 50Mb.