Re: Large number of ARP request on network?
From: Dave (noone_at_nowhere.com)
Date: 03/10/04
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Date: Wed, 10 Mar 2004 22:39:38 -0000
that can be a symptom of blaster, welchia or nachi worm infestations. check
all machines for those and any other virus/worm while you are at it. part
of the question is, how large is large? i have seen one machine on a
100mbit ethernet virtually saturate the t1 feeding our office with that
stuff... or is it an arp a minute or something like that??
"Tim A. Fleming" <tfleming@gha-nc.org> wrote in message
news:u2DHWhuBEHA.628@TK2MSFTNGP10.phx.gbl...
> Hello,
>
> I have downloaded Etherreal and have noticed a large number of Address
> Resolution Protocol requests on our network. Systems are asking
> (particularly the server) who has address 192.168.?.?.
>
> We are running DNS and DHCP which when we enter IPCONFIG on a desktop
> everything reports back correctly. All desktops are running Win2K
> professional and the server is running Win2k Server.
>
> Everything seems to be working but the number of ARP request concern me.
> Should I be concerned?
>
> I always thought that using DHCP and DNS would reduce or eliminate ARP
> broadcasts. I know the client will initiate a Dhcpdiscover packet upon
> initial bootup. That systems a client talks to will be added to the ARP
> cach. But broadcasts should be reduced or eliminated if you have setup
DHCP
> and DNS correctly.
>
> Thank You.
>
>
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