NOTES, RESOURCES, ADDITIONAL INFORMATION | 81
Type ‘help-pbx’ and <enter>, you’ll get a list of commands. First, Let’s set up your ethernet IP
address and get this box on your network so that you can get it going fully.
At the ‘$’ prompt, type ‘netconfig’ and <enter>. You’ll get a blue screen (not like in windows,
don’t worry!) asking if you’d like to set up networking. Press the space bar if the “YES” button
is highlighted, (the <TAB> is used to toggle between yes and no). The next screen has a place
to enter an IP address, netmask, default gateway and name server, or a check box that you can
select with a spacebar tap that enables DHCP so that your router or DHCP server can assign an
address for you. We suggest that you assign a static address, as this machine is a server that
will always be online and running. Below is our configuration; change this for your network
On our lab network, the router is on 192.168.0.1. We use a class C netmask of 255.255.255.0
and the DNS server at 8.8.8.8 works almost everywhere and is fast, so it’s used often.
Use the <TAB> key to advance to the OK button and <enter> to select it.
At the prompt root@pbx:~$_
Type ‘ifup eth0’ and hit return. There will be a short pause and then you’ll get the prompt back.
Your ethernet interface (eth0) should now be up and working.
If you’re connected to the Internet, type ‘ping yahoo.com <enter>’ and if you’re successful,
you’ll get your ping returned from yahoo.com. To stop the pinging, hold down control and hit
‘c’ (Ctrl-c). You should get the prompt back again. This little test proved two things: that you
have internet connectivity and that your DNS name resolution worked. (it looked up the IP
address for yahoo.com and gave your box the ip address for them). If you reboot the machine,
the eth0 interface will come up automatically from now on.
Please be aware that this tool only configures a single Ethernet card. If you have more, you can
configure them later.
TIP
Is your system really slow at certain points or does it seem to stop? DNS is used for many
things in Linux. If it isn’t available, many services will be VERY slow. Minutes-long pauses
waiting for name resolution timeout are not uncommon and some things will appear to stop
working entirely. So if you have long pauses while working with your system, lack of DNS is
a probable cause. If you plan to run your system without DNS, you’ll want to ll in the ‘hosts’
table with any addresses that might be logged or ‘talked to’ by the system. It is found at ‘/etc/
hosts’. You can edit the le using ‘mc’ (Midnight Commander) or other editors like pico and vi.
Follow the examples in the le.
Set the passwords for various features
At the shell (command) prompt, type passwd-master and then <enter>. You’ll be prompted to
enter the password twice. If they match, the password is set. Save these or choose passwords
that you won’t forget. Do the same for the following commands:
passwd-maint
passwd-wwwadmin (you’ll use this one most often)
passwd-meetme
passwd-webmin
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