Network Command Line Tools

Network Command Line Tools

1. ipconfig

   • /all
     • show all TCP/IP details
   • /release
     • release the DHCP lease
   • /renew
     • renew the DHCP lease
   • /flushdns
     • flush the DNS resolver cache
   • Windows TCP/IP configuration

2. ping

   • <ip address>
     • test the reachability to a TCP/IP address
   • -t <ip address>
     • ping until stopped with Ctrl-c
   • -a <ip address>
     • resolve address to a host name
   • -n <count> <ip address>
     • send a # of echo requests
   • -f <ip address>
     • send with don't fragment flag set
   • test reachability

3. tracert

   • determine the route a packet takes to a destination
   • takes advantage of ICMP Time to Live Exceeded error messages
     • not all devices will reply with ICMP Time Exceed messages

4. nslookup

   • lookup information from DNS servers
     • Canonical names, IP addresses, cache timers, etc.

5. netstat

   • network statistics
   • -a
     • show active connections
   • -b
     • show binaries
   • -n
     • do not resolve names

6. nbtstat

   • query NetBIOS over TCP/IP information
   • -n
     • list local NetBIOS names
   • -A
     • <ip address>
       • list remote NetBIOS names
   • -a
     • <device name>
       • list remote NetBIOS names

7. net

   • use
     • connect to a resource
   • view
     • list available resources
   • start/stop
     • start or stop Windows services