Useful Tools

Handy network troubleshooting tools right at your fingertips that are freely accessible to run right off your very own computer from a dos or Windows ‘run’ command line.

1. Ping

Runs from the Windows Dos Command
A handy utility to test connectivity between the sending and receiving host.
It uses the ICMP to send an echo packet to a destination host with a mechanism to listen for a response from the queried host.
Good for finding out if a connection problem exists internally or externally.

1. Tracert

Runs from the Windows Dos Command
Is the next handy utility tool after ping that can determine more specific routing information between the sending and receiving host.
It returns information such as the path to the destination, the route the packet takes and the response times to these hosts.

1. Ipconfig

Runs from the Windows Dos Command
Finds out the IP configuration of the network cards and devices attached to the Windows machine.
It can also be used to renew DHCP address leases, refresh and release IP addresses for a device.

1. Netstat

Runs from the Windows Dos Command
Is used to determine the current state of an active network on a machine to find out which, if any, remote hosts are connected to a specific port on a local
host.

1. PuTTY

http://www.putty.org/
PuTTY is a very handy little open source software tool which can be downloaded from putty.org (link listed above) It is a telnet and SSH client.

1. NSLookup

Runs from the Windows Dos Command
Used to look the specific IP address of a domain name. If it unable to resolve the domain names (DNS address) then there are some DNS issues.