Firewall Wizards mailing list archives
DHCP in a corporate MS environment - Security Risk?
From: Eye Am <eyeam () optonline net>
Date: Mon, 20 Jan 2003 23:06:10 -0500
I'm looking for opinions, experiences and references on the subject. Downed and searched the entire Firewall-Wizards list. Found little discussion either way. This may be a bit OT for the board except that some security may well be set at the public-facing firewall as well as risks may be apparent there. Our corporate network is reasonably well set up with private and public DNS, no wireless IP connections and blocking all RFC1918 traffic in or out of the public side. Some security consultants highly recommended static addressing across the board for security and control reasons - i.e.. access-list control and the potential for compromise of the DHCP database. I have searched google etc and found a few articles and whitepapers. We have historically configured static IPs on servers, routers, switches and all outside-facing devices. We do have several multi-homed devices with static, public IP and a second interface facing inside (these are being migrated to DMZ where multi-homing will no longer be necessary.) However this does get to be a pain when making across-the-board changes. Documentation is a bear as well since we are a small company with little resources available to keep detailed network drawings up-to-date. Lately we are leaning towards regular lease-based DHCP for workstations and reserved DHCP addresses on servers on the private side. This will, of course, make life much easier when making widespread changes or additions such as adding secondary DNS. I have been wavering back and forth. Is there any experience with compromised DHCP databases in MS environments? Any strong opinions or reasoning pro or con the use of DHCP? Any recommendations for shoring up the service and it's traffic? Much Appreciated In Advance Chuck _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- DHCP in a corporate MS environment - Security Risk? Eye Am (Jan 21)
- Re: DHCP in a corporate MS environment - Security Risk? David Lang (Jan 21)
- Re: DHCP in a corporate MS environment - Security Risk? yossarian (Jan 22)
- Re: DHCP in a corporate MS environment - Security Risk? Bill Royds (Jan 22)
- Re: DHCP in a corporate MS environment - Security Risk? Ben Nagy (Jan 22)
- Re: DHCP in a corporate MS environment - Security Risk? Luca Berra (Jan 24)
- Re: DHCP in a corporate MS environment - Security Risk? Luca Berra (Jan 28)
- Re: DHCP in a corporate MS environment - Security Risk? Ben Nagy (Jan 29)
- Re: DHCP in a corporate MS environment - Security Risk? Luca Berra (Jan 24)
- Re: DHCP in a corporate MS environment - Security Risk? Luca Berra (Jan 22)
- <Possible follow-ups>
- RE: DHCP in a corporate MS environment - Security Risk? Noonan, Wesley (Jan 21)
- RE: DHCP in a corporate MS environment - Security Risk? Paul D. Robertson (Jan 22)