Networking - KeynesYouDigIt/Knowledge GitHub Wiki

General

  • Router is usually at XXX.XXX.0.1 -> On TP-Link, that's 192.168.0.1
  • Forward incoming requests on a port to internal IPs and ports
  • Connected wired devices are at IP & MAC Binding > ARP List
  • Connected wireless devices are at DHCP > Clients List
  • Your /etc/hosts file will map a hostname to an IP address
  • Look up all devices on your network with nmap -sP "192.168.0.*"
  • Look up information about your network adapter with ifconfig

Dynamic IP addresses

  • Your router's address changes, but you can setup a service that gives you a static domain name that redirects to a variable IP address
  • Configure your router to update the service, or install a client on an always-connected computer in your network that updates it

Assigning static IP addresses

  • Under DHCP > Address Reservation, put the MAC address of the hardware and the IP address you'd like to reserve

    • Address must be outside of the range of addresses assigned by DHCP

  • Edit /etc/dhcpcd.conf

  • At the bottom of the file, add (for wired/wireless connections):

    interface eth0

static ip_address=192.168.0.10/24
static routers=192.168.0.1
static domain_name_servers=192.168.0.1

    interface wlan0

static ip_address=192.168.0.11/24
static routers=192.168.0.1
static domain_name_servers=192.168.0.1