Networking

• ping - ICMP tool to test connectivity

  • ex: ping -c 3 example.com

• ip addr - display address, routing, devices, tunnels

  • ex: ip a show en0

• ss - socket status, displays network connections

  • ex: ss -uplant
    • shows “the works”
  • ex: ss -lnt
    • listening tcp

• /etc/hosts - hosts config (local "dns")

• /etc/resolv.conf - nameserver configuration