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Re: kudzu auto mode
- From: "Jay Lee" <jlee pbu edu>
- To: nahant-beta-list redhat com
- Subject: Re: kudzu auto mode
- Date: Mon, 22 Nov 2004 15:45:20 -0500 (EST)
John Vasileff said:
>> In most Corporate Networks, DHCP is a pretty safe assumption. You can
>> configure dhcpd to force a certain IP to a certain MAC address and to
>> ignore any MAC Addresses that don't have a forced address. As of dhcpd
>> 3.0 there are failover capabilities. I've yet to hear any (good)
>>reasons
>> to not run DHCP for workstations. Servers though are another matter.
>
> DHCP is great, but if for no other reason than security, I don't want
> machines jumping online without explicitly configuring them to do so.
First off, I've heard that explanation before and don't buy it. Any
script kiddie worth his braces can fire up a sniffer, determine your
network/netmask and grab a valid IP Address. Your not stopping anyone by
not running DHCP.
Second, if you're really concerned about giving out leases to MACs you
haven't blessed then do as I said above and configure DHCPD to give out
static IP addresses to MACs you've manually entered in the database and do
not create a open "range" of leases. Manually setting hundreds of IP
Addresses for client machines makes something trivial for DHCP like
changing a gateway or DNS server darn near impossible.
Jay
--
Jay Lee
Network / Systems Administrator
Information Technology Dept.
Philadelphia Biblical University
--
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