Security Basics mailing list archives
RE: unable to join domain from dmz
From: "Cherian Palayoor" <securinet2004 () yahoo ca>
Date: Wed, 8 Sep 2004 10:48:38 -0700
Is there any particular reason, for you to want the BDC to exist on your DMZ? As someone mentioned, you would need to open the floodgates between the DMZ and your internal LAN to get the BDC functional. That is asking for trouble. Can someone suggest a more (relatively) secure method of allowing access to the internal from the DMZ? -----Original Message----- From: Phillip McCollum [mailto:P McCollum () sanmanuel com] Sent: Wednesday, September 01, 2004 10:51 AM To: dan.tesch () comcast net; andrew.shore () holistecs com; security-basics () lists securityfocus com Subject: RE: unable to join domain from dmz Correct me if I'm wrong, but isn't it just a bad idea in general to have any sort of Domain Controller data on a server in the DMZ? Phillip McCollum Network Technician San Manuel Band of Mission Indians pmccollum - at - sanmanuel.com
"Andrew Shore" <andrew.shore () holistecs com> 8/26/2004 7:33:52 AM
conduit permit ip host 172.17.0.10 172.17.0.0 255.255.0.0 Is this the real line from the pix or a typo in the question? You should need conduit command from the 172.17.x.x to 172.17.x.x as this does not go through the firewall You need to allow netbios traffic to and from the BDC sever on the dmz to the PDC. Also as stated before you will need a wins server. conduit permit icmp any any is allow the ping command. Also you should really use access-list rather than conduit commands as I believe Cisco are dropping support for the conduit command with the next PIX OS release, mind you they've said that for years. Hope this helps Andy -----Original Message----- From: Dan Tesch [mailto:dan.tesch () comcast net] Sent: 24 August 2004 21:50 To: Security Basics Subject: Re: unable to join domain from dmz *********************** Your mail has been scanned by EdgeDefence(TM). *********************** You can do this by adding an entry in LMHOSTS also, you can google for instructions - simpler than setting up WINS.
You need to setup a WINS server. Otherwise you cannot cross
subnets.
On Mon, 23 Aug 2004 12:12:52 +0300, Bilal Dar <bdar () pbad sbg com sa>
wrote:
I am having a problem, i couldn't figure out the reason till now.
We are
having our NT 4 Primary Domain Controller on the inside network,
now i am
installing another server in the DMZ as a Backup Domain
Controller. When i
try to join the domain during installation i get an error stating
"The
domain controller for the domain cannot be located" Dmz = 172.17.0.0/16 Inside = 172.16.0.0/16 PDC = 172.16.4.2 NewServer = 172.17.0.10/16 conduit permit icmp any any conduit permit ip host 172.17.0.10 172.16.0.0 255.255.0.0 conduit permit ip host 172.17.0.10 172.17.0.0 255.255.0.0 conduit permit tcp host 172.17.0.10 eq smtp any conduit permit tcp host 172.17.0.10 eq pop3 any conduit permit tcp host 172.17.0.10 eq domain any conduit permit udp host 172.17.0.10 eq domain any conduit permit ip host 172.17.4.2 host 172.17.0.10 I can ping NewServer from Inside network. Am i missing something? Thanks-- END OF LINE -MCP
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Current thread:
- RE: unable to join domain from dmz Phillip McCollum (Sep 07)
- RE: unable to join domain from dmz Cherian Palayoor (Sep 09)
- <Possible follow-ups>
- RE: unable to join domain from dmz James P. Saveker (Sep 08)
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- RE: unable to join domain from dmz Gautam R. Singh (Sep 09)
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- unable to join domain from dmz Hayden Searle (Sep 10)