Subject: a big fat ADSL ISP connection problem
To: None <tech-net@NetBSD.org>
From: Laser Laserov <lasernet@operamail.com>
List: tech-net
Date: 10/22/2004 19:00:53
[ISP]=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D[ADSLmodem]=3D=3D=3D=3D=3Drtk0[MyRout=
er]rtk1=3D=3D=3D=3D=3D=3D=3D[MyLAN]

ADSLmodem - ZXDSL 831
it's some kind of a router/modem thing. it has a DHCP which gives rtk0
settings and with these settings (usually has to work) I can use the
connection.
I don't have access to ADSLmodem becouse of the ISP's policy (don't have
the password) and I can't do anything with the modem/router except plug
it into some ethernet interface card.=20

MyRouter is on NetBSD:
rtk0: connected to ADSLmodem which is a DHCP and gives rtk0 his settings
rtk1: 192.168.2.1 - connected to MyLAN

(THE BIG FAT PROBLEM)I've setuped a NAT which works, but I'm getting an err=
or:
... /netbsd arpresolv: can't allocate llinfo on rtk0 for 83.228.18.23
and I can't reach the INTERNET through MyRouter and therefore the NAT dosn't
work.

/etc/ipnat.conf:
map rtk0 192.168.2.0/24 -> 0/32
map rtk0 192.168.2.0/24 -> 0/32 portmap tcp/udp 20000:40000=20

On my windows 2000 box it (INTERNET connection) works just gine but notice =
that on the=20
output below the "Default Gateway" setting is the same as "IP Address":

C:\>ipconfig /renew

Windows 2000 IP Configuration

Ethernet adapter Local Area Connection:

        Connection-specific DNS Suffix  . : home
        IP Address. . . . . . . . . . . . : 83.228.18.23
        Subnet Mask . . . . . . . . . . . : 255.255.255.0
        Default Gateway . . . . . . . . . : 83.228.18.23

I then look in the routing tables on my Win2000 box:
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 00 e8 7b 6d 29 ...... Realtek RTL8029(AS) Ethernet Adapt
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0     83.228.18.23    83.228.18.23       1
      83.228.18.0    255.255.255.0     83.228.18.23    83.228.18.23       1
     83.228.18.23  255.255.255.255        127.0.0.1       127.0.0.1       1
   83.255.255.255  255.255.255.255     83.228.18.23    83.228.18.23       1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
        224.0.0.0        224.0.0.0     83.228.18.23    83.228.18.23       1
  255.255.255.255  255.255.255.255     83.228.18.23    83.228.18.23       1
Default Gateway:      83.228.18.23
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Persistent Routes:
  None

And then on MyRouter:

Routing tables:
Destination              Gateway               Flags
default                  83.228.18.23          UG
83.228.18.0              link#1                U
83.228.18.23             127.0.0.1             UGH
127.0.0.0                127.0.0.1             UGR
192.168.2.0              link#2                U


What can I do to share my connection through NAT normally?
How can I get a connection on MyRouter?
Please help!
--=20
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