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Date:      Sat, 15 Sep 2001 20:41:09 +0200
From:      rene@xs4all.nl
To:        questions@freebsd.org
Subject:   ping fails (setup: pptp, ppp, adsl (xs4all.nl), ipf, IPv4)
Message-ID:  <20010915204109.G7106@xs4all.nl>

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Hi, I'm running a freebsd ipf firewall. This machine connects an NT box on a
192.168.102.x network to an ADSL modem running on a physically seperate
10.0.0.x network. 
The software used to glue it together is pptp, ppp and ipf. 
I've included some configuration below:

I'd like to know why a ping from the console itself fails, while it succeeds
from the NT box. ;)

Nothing appears in my ipf log.

Please don't hesitate to mail me if you have more questions.

--- /etc/ppp/ppp.conf
 set log IPCP Chat Phase
 set authname <somethingOK>
 set authkey <somethingOK>
 set timeout 0
 set ifaddr 0 0
 add default HISADDR
 #alias enable yes
 nat enable yes

--- ping output
messenger# ping 194.109.6.66
PING 194.109.6.66 (194.109.6.66): 56 data bytes
ping: sendto: No route to host
ping: sendto: No route to host

--- netstat -nr output
Routing tables

## I've hidden my IP's, since they are irrelevant to the problem, imho.
## <gw-ip> = KPN ADSL gateway ip 
## <my-ext-ip> = my external IP address, what the world sees

Internet:
Destination        Gateway            Flags     Refs     Use     Netif Expire
default            <gw-ip>	     UGSc        3   170495     tun0
10/9               link#2             UC          1        0      xl0 =>
10.0.0.138         0:80:9f:24:39:7e   UHLW        2   412954      xl0    664
127.0.0.1          127.0.0.1          UH          1      116      lo0
192.168.102        link#1             UC          1        0      de0 =>
192.168.102.10     0:10:5a:c0:33:b3   UHLW        3   244778      de0    782
<gw-ip>		   <my-ext-ip> 	      UH          3       18     tun0

--- ifconfig -a output
de0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 192.168.102.1 netmask 0xffffff00 broadcast 192.168.102.255
	ether 00:00:c5:0e:e1:61 
	media: autoselect (10baseT/UTP) status: active
	supported media: autoselect 10base5/AUI 10base2/BNC 10baseT/UTP <full-duplex> 10baseT/UTP
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet 10.0.0.139 netmask 0xff800000 broadcast 10.127.255.255
	ether 00:10:5a:c0:32:13 
	media: autoselect (10baseT/UTP) status: active
	supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
ep1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
	ether 00:20:af:92:f1:49 
	media: 10baseT/UTP
	supported media: 10baseT/UTP
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif1: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif2: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif3: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	inet 127.0.0.1 netmask 0xff000000 
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
faith0: flags=8000<MULTICAST> mtu 1500
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
	inet <my-ext-ip> --> <gw-ip> netmask 0xffffff00 
	Opened by PID 236

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