laura isko wrote:
> ???
>
> I've got a WinMe with a modem.
>
> I wanted to test an NT Server app so I built an NT 4 server. But it
> needed internet access.
>
> I installed WinProxy on the WinMe and plugged both boxes into a hub.
> The WinMe inside is: 192.168.1.1, the NT is 192.168.1.3. When I do a
> packet capture on the NT box, I can see the WinMe source address asking
> for ARP_RARP info from anyone in the 192.168.1.1-192.168.1.174 range.
>
> Who or what is asking for the ARP info?
>
> I mentioned the WinProxy because I didn't know if it was somehow
> relevant.
>
> laura
Well the funda is as such.... to be able to transfer data to any machine
you must know its hardware address. The IP address is mapped to the
hardware address of an interface in the machine, which can be a normal
LAN card having a unique MAC address. When a machine wishes to transfer
data to a particular IP address, it first tries to retrieve the hardware
address of the peer machine. For this the requesting machine sends an
ARP ( Address Resolution Protocol) request to the network asking for the
hardware address of the peer machine. If any of the machines within the
network has such an IP it answers to the ARP request with an RARP(
RevevseARP) reply which contains the Hardware of the peer machine. After
this the machines can start talking to each Other. In your case the WinME
box wants to communicate with a machine on the network
192.168.1.1-192.168.1.174 ( based on the netmask you have set I presume)
Hence it sends the APR request and recieves an RARP reply for the same.
Hope this clears the issue
Cheers
ag
