Network Testing

Not a configuration guide

A sample router configuration (WAN, DHCP, port forwarding and firewall) can be found in Network Devices.

Examples used:

• 192.168.1.101 = myhost, myhost.mydomain.tld
• 192.168.1.1 = router
• 192.168.1.151 = Windows machine
• 123.456.789.012 = public IP

Let us find out whether the network is working. (Caution: you should use IPs in your local network for the test.)

Get the local IP address of your system

dos-start: Starting DOS

Start the DOS virtual machine:

Press Start

Select Run

dos-cmd: Starting DOS

Key in cmd

Click OK to start DOS

dos-ipconfig: ipconfig -all

Issue the command ipconfig -all

ipconfig -all

lac-prop: Local Area Connection properties

Alternatively, you can obtain the above data by double clicking Local Area Connection or right click and select Properties

lac-status-sup: Local Area Connection support

Click Support

lac-status-detail: Local Area Connection details

Click Details

Ping

Check signal transfer:

dos-pingrouter: Ping a router

Router:

ping 192.168.1.1

dos-pingclient: Ping a client host

Windows workstation:

ping 192.168.1.151

Q&A

I cannot see my WAN IP!

You will not see your WAN IP when you are behind a router. Get it by logging in to the status page of your router (at http://192.168.1.1) or by pointing your browser to http://www.whatismyip.com, http://www.ipchicken.com or the dynamic IP checker of your DNS provider.

Why is ipconfig -all used instead of ipconfig?

The command ipconfig -all will provide additional information like domain suffix, DHCP status, IP of DHCP server and IP of DNS server.