Date: Sat, 11 Aug 2001 18:54:47 +0000 From: William Ward <wardd@d1c47d61.gw206.dsl.airmail.net> To: questions@freebsd.org Subject: natd and aliases on same interface Message-ID: <20010811185447.B491@d1c47d61.gw206.dsl.airmail.net>
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How can I tell natd not to divert an alias when trying to communicate
on my local area network?
I'm sure this is a common problem so I won't go into too much detail.
I have four machines connected to the ports on my DSL router. I'm using
one machine with nat to connect the other three machines to the internet.
The problem is caused because I have two subnets on the same interface
and nat translates the alias to the public IP address before going
out over the local area network.
This is what I would like to avoid:
toaster% telnet 10.0.0.25
...
sawdust% who am i
wardd ttyp2 Nov 22 07:33 (128.1.1.2)
^^^^^^^^^ this!
I would much rather the other box see the 10.x address instead.
d1c47d61# ifconfig dc0
dc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 128.1.1.2 netmask 0xffffffc0 broadcast 128.1.1.0
inet6 XXXX::XXX:XXXX:XXXX:XXXX%dc0 prefixlen 64 scopeid 0x1
inet 10.0.0.11 netmask 0xffffff00 broadcast 10.0.0.255
ether XX:XX:XX:XX:XX:XX
media: Ethernet autoselect (100baseTX)
status: active
d1c47d61# ipfw list
00050 divert 8668 ip from any to any via dc0
00100 allow ip from any to any via lo0
00200 deny ip from any to 127.0.0.0/8
65000 allow ip from any to any
65535 deny ip from any to any
The machine is running 4.3-CURRENT.
/William
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