Until we were able to get DSL here at my office, I had a linux server connect
to the internet on demand by dialup, and it worked pretty well as long as web
browsing was the predominant activity. This was for 6 users - 5 on Windows
and myself on Linux. I used the demand option of ppp as Jim mentioned, and
the program dnrd for a small dns cache, which means the linux server was the
domain name server for the network.
If I remember, ppp had to be on in the background and then when there was a
request for something outside the lan, it would dial up the connection. I
used Debian so the ppp options are in /etc/ppp/peers, but they were pretty
much as Jim stated, except I seem to remember having one like
10.17.163.11:10.17.163.45
which tells ppp that the local ip address is the one on the left, and the
remote one on the right (which will be changed once the connection is made to
the isp so it can be anything in your subnet)
Anyway, then you have to have your firewall rules set up, which I can send you
the ones I used if you would like to take a look and modify them.
Here's a site I found that shows another way of doing it using RedHat
scott
"Michael K. Dittmeier" wrote:
> I am trying to setup a Red Hat Linux 7.1 server for a non-profit
> organization that will use a dial up modem connection for internet access.
> The server will act as a Squid Proxy/Cache server, as well as send and
> receive email from remote pop accounts. The network consists of 6 to 8
> Windows clients (not my choice) and 1 Linux Red Hat 7.1 workstation. All
> workstations and the server are connected via a 3com super stack II 10/100
> switch.
>
> And now the question...
>
> How do I make the Linux Server dial out to the internet when a client
> workstation (i.e.: windows client) request a website or any url/ip address
> of a WAN or internet address. I also need to configure the server to active
> the ppp connection to the internet for sendmail to send email to the
> internet, and fetchmail to active the ppp connection when it needs to
> retrieve email.
>
> I have been looking for a related howto but have not found one that
> incorporates the right mixture yet...
> I am willing to document a howto if I can gather enough info to make it
> work.
>
> I have a jpg that I can email if you need further examples of the network
> layout.
>
> Mike Dittmeier
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