[pptp-server] Interface problems

[Lorentz Morrow]

	If this is a simple or obvious problem I will apologise in advance.  I am 
fairly new to the Linux world. I've got a box at home that is the gateway to 
my internal network which runs pptpd.  Eth0 is the outside interface eth1 is 
the internal interface.  It works great.  I'm trying to set up pptpd at work 
and it's not going so great.  I've got a D-Link router that is the gateway 
there.  It is also a dhcp server.  It always assigns the pptp server's eth0 
192.168.1.4 and directs all traffic for ports 1723 there.  At first I thought 
that I could just have a single interface and not mess with iptables.  With a 
single interface I could connect with encryption but could not ping any other 
IPs on the network.  

	My first question would be... can I use pptpd with a single interface box? 
and if so how?

	So, I didn't get the single interface setup working, so, I figured I'd just 
add a second interface and mimic my settings at home.  So, I dropped in eth1 
and set it static to 192.168.1.6 and took my same iptables script I use at 
home (got it from home.swbell.net/bezerke/) and plugged in the internal and 
external interface variables and the internal subnet.  It didn't work I get 

iptables v1.2.3 : log-level "info" ambigious try iptables -h or --help

several times in a row.  

	My second question would be what would I need to change to make this work?

If you get the urge to reply with RTFM please specify which one.

Thank you,
	Lorentz Morrow