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 From:  Christian Graffeuille <frachg at yahoo dot fr>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  m0n0wall and ADSL router: all traffic is blocked
 Date:  Tue, 20 Jun 2006 12:13:06 +0200 (CEST)
  I have the following 3-NIC setup:
(WAN: Dynamic Public IP)    
   Dynalink RTA300 ADSL router, NAT, DNS proxy
(WAN:  GW:
    m0n0wall (LAN IP addy on the console)
     |                      |  
     |                      |
(PCs:  (DMZ:
  Firewall rules
  green arrow *   *   *   *   *  for all three LAN WAN OPT1 tabs
  the /22 subnet mask ( is there so that PCs, router and DMZ see each other as part of
the LAN. Because m0n0wall has narrower subnets defined, each subnet is separate as far as it is
concerned (if i understand correctly), right?
  /22 may not be useful when m0n0wall runs, but comes handy when it is removed (as i plug and unplug
a lot lately, since nothing works...).

The problem is that nothing goes thru m0n0wall.
I can ping the DMZ box and the PC (500 ms!) from m0n0wall, but not the router. When m0n0wall is in
the way, PCs, DMZ box and router can no longer see each other.
the m0n0wall system log has this message
  kernel: arp: is on ed1 but got reply from 00:90:96:48:d4:11 on xl0
  where xl0 is lan and ed1 is wan. not sure what to make of it. the router is not connected to the
lan NIC.

  That's all I can think of. I have learnt a lot lately, but there are obviously still huge gaps in
my understanding of the app.
  A similar issue was discussed 2 years ago at 
  but it is of no use to me.
  So if a good samaritan feels like untangling this mess for me, I'll be very grateful. Once traffic
goes thru, I am confident (yes! :o) I can play with the rest of the config. But for now, I obviously
am missing something big.

Thanks for your help, Christian


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