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Re: PPPD as Server
>I have read over the man pages to PPPD but I am still a bit fuzzy on how I
>would set it up as a single line server over a modem. I didn't see
>anything in the FAQ, are there places I can go to find examples maybe?
The main options (there will be more) you'll probably require are :-
auth Require the peer to authenticate itself before
allowing network packets to be sent or received.
Enables the "passive" option in the LCP. With this
option, pppd will attempt to initiate a connection;
if no reply is received from the peer, pppd will
then just wait passively for a valid LCP packet
from the peer (instead of exiting, as it does with-
out this option).
Set the local and/or remote interface IP addresses.
Either one may be omitted. The IP addresses can be
specified with a host name or in decimal dot nota-
tion (e.g. 18.104.22.168). The default local
address is the (first) IP address of the system
(unless the noipdefault option is given). The
remote address will be obtained from the peer if
not specified in any option. Thus, in simple
cases, this option is not required. If a local
and/or remote IP address is specified with this
option, pppd will not accept a different value from
the peer in the IPCP negotiation, unless the ipcp-
accept-local and/or ipcp-accept-remote options are
login Use the system password database for authenticating
the peer using PAP, and record the user in the sys-
tem wtmp file.
Add an entry to this system's ARP [Address Resolu-
tion Protocol] table with the IP address of the
peer and the Ethernet address of this system.
Require the peer to authenticate itself using PAP
[Password Authentication Protocol] authentication.
silent With this option, pppd will not transmit LCP pack-
ets to initiate a connection until a valid LCP
packet is received from the peer (as for the `pas-
sive' option with ancient versions of pppd).
Set the above options up in the pppd options file /etc/ppp/options.ttyname
If you then issue the command for each of your dial-in lines
making sure a getty is not running on those tty's, then pppd should sit
quitely until its see's a lcp packet from the remote machine after the
modems have communicated. This will not work for clients that require
scripting for authentication. That you can add with other options. The
Windoze95 dialup client supports pap as default so should have no problems
as does macppp and should opentransport ppp client ;-)
Create your users on the system as you would normally, and if you don't
want them to be able to telnet into the dialin machine, etc, supply a shell
of /sbin/nologin or whatever.
I haven't tried this as yet, just use pppd to dial out, fell free to
correct any mistakes. Hope this helps.
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