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KLIENT
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Windows 


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Linux
%sieć jako NAT
ip a
ping 8.8.8.8
%zmiana ustawień virtual boxa na siec wewnetrzną
ip link set enp0s3 down
ip link set enp0s3 up  
ip a
%2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 08:00:27:ac:cc:8a brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.3/24 brd 10.0.0.255 scope global dynamic noprefixroute enp0s3
       valid_lft 43013sec preferred_lft 43013sec
    inet6 fe80::57b3:7b8b:af17:91cc/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
ping server
ping 10.0.0.1 
ping 8.8.8.8 - nie dziala gdyz nie ma routiungu na serwerze
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SERVER
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Windows 

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Linux 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~https://graspingtech.com/dnsmasq-ubuntu-18-04/
DNS/DHCP
edit the hostname in the /etc/hosts
127.0.1.1  server
To
10.0.0.1  server
ip link set enp0s3 up
ip link set enp0s8 down
sudo apt-get install dnsmasq
%modify the /etc/resolv.conf
nano /etc/resolv.conf
%nameserver 127.0.0.1 lub echo "nameserver 127.0.0.1" | sudo tee /etc/resolv.conf
sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.bak
# nano /etc/dnsmasq.conf
%paste 
# Global settings
domain-needed
bogus-priv
no-resolv
expand-hosts
filterwin2k

# Upstream nameservers
server=10.0.0.1
server=8.8.8.8

# domain name
domain=x.local
local=/x.local/

listen-address=127.0.0.1
listen-address=10.0.0.1
%CRTL+X zapisać i 
systemctl stop systemd-resolved
systemctl disable systemd-resolved
systemctl restart dnsmasq
%Configure DHCP- add the following to the config file and restart the service 
# DHCP options
dhcp-range=10.0.0.2,10.0.0.253,12h
dhcp-lease-max=10
dhcp-option=option:router,10.0.0.1
dhcp-option=option:dns-server,10.0.0.1
dhcp-option=option:netmask,255.255.255.0
%CRTL+X zapisać i 
systemctl restart dnsmasq
%How to assign fixed addresses
dhcp-host=08:00:27:AC:CC:8A,10.0.0.3,klient
%How to view DHCP Leases
$ cat /var/lib/misc/dnsmasq.leases
1639014163 08:00:27:ac:cc:8a 10.0.0.3 klient 01:08:00:27:ac:cc:8a
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