Network Tools

Non-exhaustive lists

Status monitoring

• ping         Check node/hosts status
  
• ifconfig    Obtains and configures networking interface status and parameter
• dig           Query DNS server
  
• host         Display informations on Internet hosts/domains
• nslookup Looks up DNS for name-IP address translation

 Traffic Monitoring Tool

• Bing/iperf   Measures point-to-point bandwidth of a link
• Etherfind    Inspect Ethernet packets
• Snoop         Captures and inspects network packets
• Tcpdump     Dumps traffic on a network
• Getethers   Acquires all host addresses of an Ethernet LAN segment
• Iptrace        Measures performance of gateways     UNIX
• MRTG/Rrdtool     Monitors the traffic load on network-links

Router Monitoring Tool

• Netstat     Displays the contents of various network-related data structure
• ARP / RARP     Displays and modifies the IP-to-Ethernet address table
• RANCID     Monitors a router's (or other devices) configuration
• Traceroute/ tracert     Trace route to a destination with routing delays
• Cacti

Trouble- shooting Tool

• BERT: Bit Error Rate Tester     Tests bit error and block error in a broadband access network using modem.
• Ethereal / Wireshark             Captures traffic, perform protocol analysis

Network Security Tool

• Nessus     Vulnerability assessment tool
• Snort     open source IDS
• Netcat     Reads and writes data across TCP or UDP network connections

Network Exploration & Hacking

• Nmap

 Live CD

•  Backtrack

  ...