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

Testing

sys-ifconfig1: Getting host 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:

$ ifconfig

bash: ifconfig: command not found

sys-ifconfig2: Getting host IP
That is correct, ifconfig is a root command. Switch to root.
# ifconfig

eth0 Link encap:Ethernet HWaddr aa:bb:cc:xx:yy:zz

inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0

more information....


Check signal transfer:

sys-ping-client: The ping command
Caution: Note the "-c 4" switch. If you issue without it, ping will continue until you press Ctrl-C.


Windows workstation:

$ ping -c 4 192.168.1.151

sys-ping-router2: The ping command
Router:

$ ping -c 4 192.168.1.1