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