General

List:

• talk to HTTP server
  • raw: netcat <HOST_IP> <HOSTPORT>, then
  • user-friendly: curl <URL>
• get domain name from IP: nslookup <IP>
• get IP from domain name: host <DOMAIN_NAME> (<DNS>)
• get DNS name from host: host -t NS <DOMAIN_NAME>
• trace route to : traceroute <URL>