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Date:      Wed, 24 May 2000 14:44:14 -0400
From:      Andrew Bogecho <andrewb@cs.mcgill.ca>
To:        Brian Somers <brian@Awfulhak.org>
Cc:        freebsd-net@freebsd.org
Subject:   Re: ppp and nat
Message-ID:  <20000524144414.H2003@cs.mcgill.ca>
In-Reply-To: <200005241659.RAA89074@hak.lan.Awfulhak.org>; from Brian Somers on Wed, May 24, 2000 at 05:59:40PM %2B0100
References:  <andrewb@cs.mcgill.ca> <200005241659.RAA89074@hak.lan.Awfulhak.org>

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Wed May 24 14:41:32 EDT 2000

Thank you for the quick reply. My alias.log file really did not help
much. All it had were lines like the following:

file: /var/log/alias.log
icmp=0, udp=1, tcp=4, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=1, tcp=3, frag_id=0 frag_ptr=0 / tot=4  (sock=0)
icmp=0, udp=2, tcp=3, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=1, tcp=3, frag_id=0 frag_ptr=0 / tot=4  (sock=0)
icmp=0, udp=1, tcp=4, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=2, tcp=4, frag_id=0 frag_ptr=0 / tot=6  (sock=0)
icmp=0, udp=2, tcp=3, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=2, tcp=4, frag_id=0 frag_ptr=0 / tot=6  (sock=0)
icmp=0, udp=2, tcp=3, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=1, tcp=3, frag_id=0 frag_ptr=0 / tot=4  (sock=0)
icmp=0, udp=2, tcp=3, frag_id=0 frag_ptr=0 / tot=5  (sock=0)
icmp=0, udp=3, tcp=3, frag_id=0 frag_ptr=0 / tot=6  (sock=0)
icmp=0, udp=4, tcp=3, frag_id=0 frag_ptr=0 / tot=7  (sock=0)
icmp=0, udp=4, tcp=4, frag_id=0 frag_ptr=0 / tot=8  (sock=0)
icmp=0, udp=5, tcp=4, frag_id=0 frag_ptr=0 / tot=9  (sock=0)
icmp=0, udp=6, tcp=4, frag_id=0 frag_ptr=0 / tot=10  (sock=0)
icmp=0, udp=7, tcp=4, frag_id=0 frag_ptr=0 / tot=11  (sock=0)
icmp=0, udp=8, tcp=4, frag_id=0 frag_ptr=0 / tot=12  (sock=0)
icmp=0, udp=9, tcp=4, frag_id=0 frag_ptr=0 / tot=13  (sock=0)
icmp=0, udp=10, tcp=4, frag_id=0 frag_ptr=0 / tot=14  (sock=0)
icmp=0, udp=11, tcp=4, frag_id=0 frag_ptr=0 / tot=15  (sock=0)
icmp=0, udp=12, tcp=4, frag_id=0 frag_ptr=0 / tot=16  (sock=0)
.....
etc.

I know that doesn't help much. I was mainly worried that I had
something wrong in m ppp.conf. Do I need a special section for the nat
area. Or does the file look ok?

Thanks again for your help.

Andrew.

On Wed, May 24, 2000 at 05:59:40PM +0100, Brian Somers wrote:
> Hi,
> 
> What does /var/log/alias.log say about port 80 traffic ?
> 
> > Wed May 24 12:37:53 EDT 2000
> > 
> > Hi all,
> > 
> > I asked about this three weeks ago on questions, but got no responses.
> > Hopefully, some here might be able to help me.
> > 
> > Here goes:
> > 
> > I am using FreeBSD 4.0-RELEASE
> > 
> > I have been having a big problem with my internal network. I am using
> > PPPoE. Below is my configuration file. I must say that everything
> > works, other than port forwarding. I only have one forwarding line, and
> > no matter what I have tried I cannot get it to work. Any help would be
> > appreciated.
> > 
> > # /etc/ppp/ppp.conf - beginning
> > #
> > # PPP Version 2.26 - Mar 20 2000
> > #
> > 
> > default:
> >  set device PPPoE:dc0
> >  set MRU 1492
> >  set MTU 1492
> >  set authname ********@sympatico.ca
> >  set authkey ********
> >  set log Phase tun command
> >  set dial
> >  set login
> >  set ifaddr 10.0.0.1/0 10.0.0.2/0
> >  add default HISADDR
> >  set cd 5
> >  set crtscts off
> > # Only added the line below so that I could use pppctl
> >  set server /var/run/internet "" 0177
> > 
> > # Comments were removed when I was testing
> > # alias enable yes
> > # alias port tcp 192.168.1.21:80 80 
> > # alias log yes
> > 
> > # nat enable yes
> > # nat port tcp 192.168.1.21:80 80
> > # nat log yes
> > 
> > papchap:
> > 
> >  set authname ********@sympatico.ca
> >  set authkey ********
> > 
> > #####
> > # /etc/ppp/ppp.conf - end
> > 
> > Please note that I tried both the alias version and the nat version to
> > no avail. I do have a network connection from my internal network out,
> > but I cannot get the port forwarding. Below is my netstat table:
> > 
> > Routing tables
> > 
> > Internet:
> > Destination        Gateway            Flags      Netif Expire
> > 0/24               link#1             UC          dc0 =>
> > default            64.228.205.1       UGSc       tun0
> > 64.228.205.1       64.228.205.204     UH         tun0
> > 127.0.0.1          127.0.0.1          UH          lo0
> > 192.168.1          link#2             UC          xl0 =>
> > 192.168.1.10       0:a0:c:c1:65:bf    UHLW        xl0    684
> > 192.168.1.11       0:0:e2:29:b6:b1    UHLW        xl0    433
> > 192.168.1.26       0:a0:c:c1:67:2     UHLW        xl0    943
> > 192.168.1.30       0:a0:c:c1:65:bf    UHLW        xl0   1175
> > 192.168.1.248      0:10:4b:7a:53:58   UHLW        xl0   1180
> > 192.168.1.249      0:a0:c:c1:46:be    UHLW        xl0   1140
> > 
> > My /sbin/ifconfig -a
> > 
> > dc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> >         inet 0.0.0.0 netmask 0xffffff00 broadcast 0.0.0.255
> >         ether 00:a0:0c:c1:42:8b
> >         media: autoselect (10baseT/UTP) status: active
> >         supported media: autoselect 100baseTX <full-duplex> 100baseTX
> > 10baseT/UT
> > P <full-duplex> 10baseT/UTP 100baseTX <hw-loopback> none
> > xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1492
> >         inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
> >         inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255
> >         inet 192.168.1.3 netmask 0xffffff00 broadcast 192.168.1.255
> >         ether 00:10:4b:13:7e:6a
> >         media: autoselect (100baseTX <full-duplex>) status: active
> >         supported media: autoselect 100baseTX <full-duplex> 100baseTX
> > 10baseT/UT
> > P <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
> > lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
> > sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
> > ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
> > lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
> >         inet 127.0.0.1 netmask 0xff000000
> > 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
> > stf0: flags=8000<MULTICAST> mtu 1280
> > faith0: flags=8000<MULTICAST> mtu 1500
> > tun0: flags=8151<UP,POINTOPOINT,RUNNING,PROMISC,MULTICAST> mtu 1492
> >         inet 64.228.205.204 --> 64.228.205.1 netmask 0xff000000
> >         Opened by PID 576
> > 
> > netstat does not show the port as open.
> > 
> > 
> > I have also tried using pppctl and typing in the commands by hand, but
> > have had no luck. Am I missing something? is my ppp.conf file somehow
> > wrong?
> > 
> > Thanks in advance for all those that try to help.
> > 
> > Andrew.
> 
> -- 
> Brian <brian@Awfulhak.org>                        <brian@[uk.]FreeBSD.org>
>       <http://www.Awfulhak.org>;                   <brian@[uk.]OpenBSD.org>
> Don't _EVER_ lose your sense of humour !
> 
> 
> 
> 
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