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 From:  Christiaens Joachim <jchristi at oce dot be>
 To:  "'Greg Sims'" <greg underscore sims at earthlink dot net>, m0n0wall at lists dot m0n0 dot ch
 Subject:  RE: [m0n0wall] Network Access from Dial-Up: Plan B
 Date:  Sat, 25 Oct 2003 10:55:52 +0200
-----Original Message-----
From: Greg Sims [mailto:greg underscore sims at earthlink dot net]
Sent: donderdag 23 oktober 2003 18:40
To: m0n0wall at lists dot m0n0 dot ch
Subject: [m0n0wall] Network Access from Dial-Up: Plan B

Thank-you to those who helped me get a modem to PPTP connection established
into m0n0wall.  I was able to establish the connection but the performance
is such that the interface is not usable.  I need to move on to "Plan B".

My Plan B is to open a port on the firewall that passes traffic to a
specific host on the LAN interface of m0n0wall.  I thought I would start
with a Big hole in the firewall just to get started and limit the size of
the firewall hole as I gain experience.

I added the following rule to the firewall:

Interface=WAN, Protocol=any, Source=any, Source Port=n/a,
	Destination=Single Host/, Destination Port=n/a,

My understanding is this should redirect any traffic that originates on the
WAN to host

>> This is wrong. This only opens a hole (a big one :), but it does not
>> redirect the traffic (and since private ranges are not routed over the
>> internet, you will not be able to use the internal address as a
>> for ex. a ping). In firewall > NAT > Inbound, you'll have to add a NAT
>> that redirects a PORT or PORT RANGE to your internal server.
>> To do this, you would have to know which services you want to make
>> available to the internet, and look up their port numbers.
>> Joachim

The WAN interface to m0n0wall is a static ip address, let's call it

I first tested host from the LAN side of the network with a ping
which worked.  I then shut down my LAN connection and used a modem to
connect to the internet. I issued the following command: "ping
123.456.789.1".  I believe this ping should be redirected to the
host on the LAN side of m0n0wall.  This host ( should be able to
respond to the ping as there is also a firewall rule that allows the LAN to
go anywhere:

Interface=LAN, Protocol=any, Source=any, Source Port=n/a,
	Destination=any, Destination Port=n/a, Fragment=null

Unfortunately I receive a Ping timeout when I ping the WAN IP address from
the Internet via modem.

Any ideas you have getting this sorted out would be appreciated!


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