Networking Tools

Lecture Video

On June 9, 2021 Prof Lundrigan discussed some common networking tools. The video is embedded below.

Timestamps

0:00 Introduction
1:19 ifconfig and ip address
6:59 ping
10:34 dig and nslookup
16:18 traceroute
21:05 curl/wget/httpie
30:04 arp
31:53 nmap
37:28 nc
40:38 tcpdump/wireshark/tshark
52:06 Wrap-up

Tools

• ifconfig or ip
  • Shows information about your computer’s networking interfaces (e.g., MAC address, IP address).
• ping
  • Sends small message to a computer. Helpful to see if a computer is connected and the latency between computers.
• dig or nslookup
  • Run a DNS lookup.
• traceroute
  • List all routers between computers.
• curl
  • Make HTTP request. By default the output is displayed in the terminal.
• wget
  • Make an HTTP request. By default the output is downloaded as a file.
• httpie
  • Better version of curl.
• arp
  • Do an ARP lookup.
• nmap
  • Networking multi-tool. Typically used for penetration testing.
• netcat (nc)
  • Create a simple TCP or UDP server/client.
• tcpdump
  • Trace all packets that are incoming or outgoing on your computer.
• wireshark
  • Better than tcpdump with a graphical interface.
• tshark
  • Terminal version of Wireshark.