Creating and Maintaining Home Networks
http://edu-observatory.org/olli/Networks/index.html

  PLACEHOLDER
  
  arp -an
  arp -an | grep ":" | grep -v ff:ff:ff | grep -v "(169" | grep -v "(224" | grep -v "(239" | awk -F' ' '{print $2 "\t " $4}' | uniq
  
  netstat -rn
  netstat -rn | grep en
  rt
  
  snmptable -v 2c -c public 172.16.0.1 ipNetToMedia
  
  LAN
  WAN
  IP
  IP2
  
  
  What do you need
  ISPs
  MODEMS
  ROUTERS
  Wi-Fi 
  

Setting up internet access at home typically involves a 
contract with an Internet Service Provider (IPS) -- The come
to your home 

Home Network Diagrams
  https://www.lifewire.com/home-network-diagrams-4064053
  https://www.lifewire.com/how-to-build-and-maintain-the-best-home-network-4097862
   



MODEM
  A modem, usually provided by your Internet Service Provider
  (ISP) translates signals from your ISP via fiber, cable,
  phone line, or Antenna into digital signals using the
  internet protocol (IP).  A modem will have a unique IPv4
  address on the Internet.

  The current status of the modem lights helps the end user to
  know whether a connection is established, if the connection
  is active, or if the connection has dropped for some reason.
  One should download the Manual (PDF) for your Modem.

  Cable modems often use an internal IP Address 192.168.100.1 
  Using your browser type: http://192.168.100.1  Example
  
ROUTER 
  A NAT router (sometimes referred to as a gateway) creates a
  local area network (LAN) of private IP addresses and
  interconnects that LAN to the wide area network (WAN) known
  as the Internet. The "Network Address Translation" (NAT)
  performed by the router allows multiple computers (machines)
  connected to the LAN behind the router to communicate with
  the external Internet.  One should download the Manual (PDF) 
  for your Router.

   
  
MAINTENANCE OF ROUTERS (gateways) 
  Find Your Router IP Address (all versions of Windows)
  Type from command line: ipconfig            Example  
  Find Your Router IP Address (Mac) 
  Type from command line: route get default   Example
  Using your browser type: http://Router IP Address   

  Make sure your Router is up2date and using unique passwords.


Recommended settings for Wi-Fi routers and access points
  https://support.apple.com/en-us/HT202068


  
  

 
    sam.wormley@gmail.com