| tcpdump |
Packet sniffer |
CLI packet capture and analysis tool. |
https://www.tcpdump.org/ |
| snoop |
Packet sniffer |
Solaris command to capture and inspect packets. |
https://docs.oracle.com/cd/E23824_01/html/821-1453/gexkw.html |
| Wireshark |
Packet analyzer |
GUI network protocol analyzer with powerful filters. |
https://www.wireshark.org/ |
| CyberChef |
Data toolkit |
Browser-based Swiss‑army knife for encoding, decoding, and data analysis. |
https://gchq.github.io/CyberChef/ |
| Netcat (nc) |
Network utility |
Reads/writes data across TCP/UDP connections. |
https://nc110.sourceforge.io/ |
| Nmap |
Port scanner |
Network mapper and security scanner. |
https://nmap.org/ |
| ping |
Connectivity test |
Checks reachability and round‑trip delay. |
https://en.wikipedia.org/wiki/Ping_(networking_utility) |
| traceroute / tracert |
Path tracer |
Shows router hops between source and destination. |
https://en.wikipedia.org/wiki/Traceroute |
| mtr |
Path analyzer |
Combines ping and traceroute in one tool. |
https://www.bitwizard.nl/mtr/ |
| nslookup |
DNS tool |
Queries DNS records for hostnames and IPs. |
https://en.wikipedia.org/wiki/Nslookup |
| dig |
DNS tool |
DNS lookup utility for detailed queries. |
https://www.isc.org/dns-tools/ |
| netstat |
Connection viewer |
Shows network connections, routing tables, and stats. |
https://en.wikipedia.org/wiki/Netstat |
| ipconfig / ifconfig |
Config viewer |
Displays or configures network interface settings. |
https://en.wikipedia.org/wiki/Ifconfig |
| route |
Routing tool |
Views and manipulates IP routing table. |
https://en.wikipedia.org/wiki/Route_(command) |
| iperf / iperf3 |
Bandwidth tester |
Measures maximum TCP/UDP throughput. |
https://iperf.fr/ |
| tshark |
Packet analyzer |
CLI version of Wireshark for captures. |
https://www.wireshark.org/docs/man-pages/tshark.html |