CLI Tools

ipconfig /all

A command to display ipconfig for each NIC on a WINDOWS

Tcpdump

A command-line protocol analyzer. Administrators use it to capture packets. LINUX

Netstat -n

Displays addresses and port numbers in numerical form.

ipconfig /displaydns

Displays all cached DNS entries in a windows system. WINDOWS

Netstat -a

Displays all ports listening on and open connections

Netstat -s

Displays per-protocol statistics

Netstat -r

Displays the routing table

ifconfig eth0 allmulti

Enables multicast mode on LINUX

ipconfig /flushdns

Erase DNS cache on WINDOWS

nslookup

Name Server Lookup. Troubleshoot DNS problems on WINDOWS.

Netcat/Ncat

Network Statistics. Banner Grabbing. Chat function. Transfer Files. Port Scanner. Port Listening. Backdoor. Cross-Platform

ARP (Command)

Shows ARP cache's. Used to fix IP to MAC resolution.

Netstat

Shows Network Statistics. ACTIVE CONNECTIONS States: Established, Listen, Close_Wait, Time_Wait, Syn_Sent, Syn_Recieved. Cross-Platform

Netstat -e

Shows network statistics such as bytes

Netstat -p [protocol]

Shows statistcs to protocol such as TCP or UDP

Windump

Sniffers. The Windows version of tcpdump, the command line network analyzer for UNIX. Fully compatible with tcpdump and can be used to watch, diagnose and save to disk network traffic according to various complex rules. It can run under Windows 95, 98, ME, NT, 2000, XP, 2003 and Vista.

Tracert

Traces route HOPS. Uses: ICMP Echo Request packets to acheive this. WINDOWS

Traceroute

Traces route HOPS. Uses: UDP packets to acheive this. LINUX

dig

Troubleshoot DNS problems on LINUX

Nmap/Zenmap

Zenmap is GUI version of Nmap. Port Scanning (Services). Host Discovery. OS Detection. Version Detection (NOT "officially" BANNER GRABBING!!!). Cross-Platform

DD

dd is a command-line utility for Unix and Unix-like operating systems, the primary purpose of which is to convert and copy files. Can be used to make images.

ifconfig eth0 promisc

enables promiscious mode/Monitor mode on LINUX. disable by retyping command.

ifconfig eth0

shows NIC interface on LINUX