Subject: AGAIN-2: does IPNAT work or not?
To: None <netbsd-users@netbsd.org>
From: Olli <oliverko@dialup.nacamar.de>
List: netbsd-users
Date: 02/14/1999 10:07:57
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Hi all,

I checked it again.

NetBSD-1.3.2: 192.168.1.1
Linux: 192.168.1.2
remote host: 141.30.4.242

I did the following:

1. ipnat -l befor I connect to my ISP:

-> List of active MAP/Redirect filters:
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32 portmap tcp/udp 40000:60000
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32

-> List of active sessions:

2. ipnat -l after I established a connection to my ISP (telnet to
remote host from Linux). I got displayed that the l IP is changed to
195.63.108.220:

-> List of active MAP/Redirect filters:
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32 portmap tcp/udp 40000:60000
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32

-> List of active sessions:
-> MAP 192.168.1.2  1024 <- -> 0.0.0.0 1024 [141.30.4.242 23]

Is it true that my Linux-box(192.168.1.2) is mapped to 0.0.0.0?

3. I killed the telnet-program on my Linux-box (ppp-connection is
still open) and called telnet again. Then ipnat -l displayes this:

-> List of active MAP/Redirect filters:
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32 portmap tcp/udp 40000:60000
-> map ppp0 192.168.1.0/24 -> 0.0.0.0/32

-> List of active sessions:
-> MAP 192.168.1.2 1027 <- -> 195.63.108.220 1027 [141.30.4.242 23]
-> MAP 192.168.1.2  1024 <- -> 0.0.0.0 1024 [141.30.4.242 23]

Bruce Anderson (Subj:"Re: does IPNAT work or not?") told me that ppp
on demand does not work with dynamic IP's may this be true? And I will
never get my NetBSD-1.3.2-box working as a dialup-router (ecause I'm
using dyn. IP's for this host)?

4. I called "tcpdump -n -i ppp0" and telnet .

ip_nat.1 -> first time called telnet
ip_nat.2 -> first telnet killed and a second time called

Thanks a lot.

with regards,
oliver

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