Implementation of DMZ 'interoperability '.

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• ESXi hypervisor and DMZ

  I troubleshoot my church with a new configuration of ESXi Hypervisor.    They would like to implement a DMZ so that their web server will be limited there.  However, given that the budget is limited, they cannot have the hypervisor edition for now. It will be converted to a full version of ESXi4 next year.    Next year, they will be budget to get Essentials more and get another host for a second Setup ESXi.

  For now, it's a single ESXi hypervisor but they need to protect their network and place their web server in a DMZ.   The server they use has 2 NETWORK cards physical, 4 GB of RAM and a 1 TB hard drive.

  I'm looking for some advice on the best way to configure their DMZ.

  I guess that would mean that the switch of the DMZ would have one and the other network adapter would be shared with management and the port VM group?   I know that sounds not very sure... I probably need a 3rd nic to separate the management side offshore on its own vSwitch but I don't have that luxury right now.

  You're right but the size of the environment, I don't think that should be a problem-

  I view this arrangement, 2 physical switches do not need to connect to the rising of the host.  We don't have one right now... that is the problem with non-profit organizations.

  Yes except if the switches support tags vLAN - and then separate you the traffic via the tagging vlan-

• DMZ query

  Hello
  
  I implement DMZ for our eCommerce suite located on 11.5.10 and I followed the metalink note: 287176.1. There are several ways to implement the DMZ, as mentioned in the metalink doc 287176.1, but I would like to know the difference between each facility and what the most secure...? as reverse proxy method or only the layer of external web in firewalls.

  See the following links:

  Advanced architectures: Oracle E-Business Suite Release 11i
  http://Ohio.OAUG.org/presentation/may2006/2006_05_16_Advanced_Architectures.PDF

  Depth: Demilitarized zone and E-Business Suite
  http://blogs.Oracle.com/stevenChan/2006/05/indepth_demilitarized_zones_an.html

• UPnP EA6900 problem

  Has brought an EA6900 a few days ago and set up correctly. The wire that is connected to 1 PC and 1 PS3.
  But the problem is, even I enabled Upnp in EA6900, opened the ports of PS3, assigned a static IP address to the PS3.

  implementation of DMZ and entry info IP manually into the PS3, he always says 'not available' Upnp.

  More information, my home network is DHCP, using cable CAT7 for PS3 and PC and router.

  Is this something that I am missing?

  For some reason any EA6900 jams feature upnp after an hour or two. Deactivation and reactivation upnp he brings back to life. Might be a bug with the latest firmware.

• Implementation EBS in the DMZ configuration

  Hello

  I have a few questions about implementing EBS in the DMZ:

  1 - when to choose the web option external only (Figure 4 in document 380490.1) to be in the DMZ, this external web communicate with internal DB directly or through the inner layer of Middle?

  2. when choosing this option (external web), if the middle tier internal was down, this affects the external web features?   Maybe this question is related to the first as well

  3. in Option external Web, I do all the changes made in the application by developers at the internal intermediate again in the external web?

  4 - What are the things to do mannualy in extrnal web, if it is made other than patching web internally?

  my last Question,

  Is there a solution certified in the DMZ, where I can implement only thin web (HTTP only containing only services not HTTP/OC4J) but not the proxy reverse?

  Thank you d ' attribute

  Without some such configuration is not possible - which is the reason for not using a reverse proxy?

  HTH
  Srini

• Good way to implement DMZ

  We currently have an ASA with internal, DMZ and outside areas interfaces.

  Guests at the DMZ (web server, ftp server, etc. etc.) attach in the infrastructure of switching on a VLAN again. All hosts in the DMZ have public IPs only.  There is no internal IP on them and no nat going for them.

  We are concerned that this is not the right way to set up a demilitarized zone.  Should we assign these hosts the private internal IP and natting them.  How would that look on the SAA?  Would there be two separate network objects, one for IP address internal and one for outside?  We would use the network object with the external IP address for all rules in the DMZ?

  Are there other best practices to follow with the creation of a DMZ on the SAA?

  Any input would be greatly appreciated.

  Thank you

  Yes create you a new private IP subnet and apply the NAT rules to translate these IP addresses to your public IP addresses.

  I don't know what exactly is your question, ask yourself how to do NAT?

  With respect to the General discussion, there are different views on that.

  NAT has never been designed as a security tool, and some people strongly support that do not rely on NAT to safety. For any type of address you use the argument is that you control traffic with the ACL and if you configure these ACLs correctly then it should make no difference as to what type of address that you use.

  The other argues that NAT can ensure a certain level of security. Certainly for standard NAT where you hide all your IP addresses behind internal public IP address for internet access in general that it could be argued that it offers security as connections can be made from the outside, only the return traffic is allowed in.

  But for the static NAT instructions you are actually allowing external connections. It is also why some people specify the ports in their static statements IE not only to preserve the IPs but also because you will be allowed to connect to that specific port.

  If you do not specify the ports then theoretically any port can be connected to although of course, it is your ACL enter.

  To me that your security comes mainly from your ACL and any security advantage that make you NAT (as appropriate) is a plus but should not be relied on.

  So in your case if you use private IP addresses and do a direct translation between a private IP address and the public IP address is almost identical using public IP addresses directly, IE. you are totally dependent on your acl configuration that isn't a bad thing.

  There may be other advantages or disadvantages, but I don't see any.

  Perhaps others could comment on.

  It's really about which you are doing.

  If you choose to use private IPs make you have 'arp-nonconnected licence' in your configuration (it may or may not be on by default).

  Jon

• LRT214 - routing of DMZ

  Hello

  for some reason I can't connect from the DMZ network to the internet.

  Installation program:

  Internal network: 192.168.0.0/255.255.255.0

  DMZ: 192.168.100.0/255.255.255.0

  WAN: connected to the cable-modem (DHCP)

  Even with the firewall disabled.

  So, for me, it seems that the unit is not "Routing" of the demilitarized zone.

  At the moment I activated the firewall again and added two rules to give them access DMZ:

  1 REFUSE all traffic to DMZ (any) to 192.168.0.0 - 192.168.0.255 (to deny access to the local network to DMZ)

  2 ALLOW all traffic to DMZ (any) to EVERYTHING (in order to select "WAN" here, would be great!)

  I had this problem before in the local network.

  But I could solve this problem when I switched the "operating mode" 'router' for 'bridge '.

  [Just a little note: after Linkysys support told me that the device if default!]

  BTW... so far, I found no clue about the difference between these two modes.

  Thanks a lot for your support

  Who was I had the suspicion on the VLan to.

  But I think that it is not completely right... you have a DMZ with a privat-ip-area, but these DMZ servers do not have access to internet (NAT number of DMZ in WAN) possible.

  To be honest, I find the DMZ - of the implementation of the very strange LRT214.

  No one expects such an implementation! And IMHO, this does not meet the definition of DMZ (see wikipedia).

• Out-of-Band management on the servers in the DMZ

  Hi, I have four PC7048s in my DMZ. External, internal making face and 2 separate demilitarized. Everything is good. All workers.

  Since they are demilitarized I want only their route between them and thus in position off http, Https, Telnet, and SSH management so that they cannot be managed remotely from the DMZ subnets.

  I then plugged the OOB interfaces in my internal management switch and VLAN them accordingly. Very well, now I can ping my OOB interfaces on all four. But I can't manage them because I have disabled SSH, HTTPS, HTTP and Telnet

  If I allow them (just SSH and HTTPS) I am now able to manage the switches of the DMZ on the IPs DMZ subnet

  I thought that the point of the OOB was so this does not happen and there is isolation? If I have to spend globally on HTTPS and SSH, then they are not really well isolated (I understand that OOB traffic cannot talk to IN-Band etc. - is the fact that I turn on a global configuration for remote OOB service)

  Am I missing something?

  Thank you

  Your results are correct. To lock the management more far I suggest looking to implement ACLs. With the ACL you can permit/deny access to various management services.

  Page 1471, guide the user passes over these commands.

  FTP.Dell.com/.../PowerConnect-7048r_Reference%20Guide_en-US.pdf

  Thank you

• ASA 5505 DMZ for the guest wireless access

  Hello

  Here is my delima:

  I'm deploying an Apple Airport Extreme BaseStation with Airport Express 7 "repeaters" throughout my network/building. Apple only allows only two wireless networks, public and private. Your selection of only can 192.168.x.x, 172.13.x.x or 10.10.x.x for each subnet. NO tagging VLAN.

  It wasn't my decision... Apple CEO hs fever.

  So Im stuck on how to implement this without VLAN. The comments/public subnet needs to be isolated outside access. While the private subnet requires access to both.

  Any suggestion would be greatly apprecaited.

  What will the Security Plus license allow me to do?

  Security over the license allows the use of circuits for the ASA 5505.  It also increases the maximum number of VLANS configurable at 20.  Allows active failover / standby and increases the number of authorized IPsec VPN tunnels.

  The problem with the basic license is that you can have 3 VLAN configured and the 3rd VLAN is a VLAN 'restricted '.  This means that you can not pass traffic to or from inside VLAN on the 3rd VLAN (or DMZ VLAN if you prefer to call it that.)  So this VLAN DMZ won't be able to communicate with the internet.

  So, if your private wireless network and the local network will be on the same subnet your public wireless network can be in VLAN 3.  If this isn't the case, you will need to get the security over the license.

  --
  Please do not forget to rate and choose a good answer

• IPSEC VPN DMZ HOST NAT

  Hello world

  First of all thanks for the invaluable information this community offers technicians everywhere... I'm newish to IPSEC VPN and I have a question.

  I have a DMZ PATed host to a public IP address. I've set up an IPSEC tunnel (with an external body on my outside interface) to allow this host reach a host computer in this organization. The VPN is not come. I am told to implement NAT exemption for the DMZ host IPSEC traffic to the host outside. Kindly, how can I do this?

  Kind regards

  Mumo

  OK, no problem :)

  for 8.2 (5), you can try the following config:

  object network DMZ-net 172.16.1.0 255.255.255.0object network Remote-net 10.1.1.0 255.255.255.0access-list asa_dmz_nat0_outbound extended permit ip object DMZ-net object Remote-netnat (DMZ) 0 access-list asa_dmz_nat0_outbound

• XE of TMS in the DMZ, taken in charge by Cisco?

  Hello

  We have implemented a hybrid solution CMR in our Organization. After application on the premises, we have:

  1 TMS and XE of TMS on the same server

  2 driver

  3 vTS

  4 Highway C & E

  And

  5 WebEx hybrid CMR allow

  6 cloud office 365

  Problem: All users connect to the outlook client to plan the hybrid meeting CMR. When users are in the office, then it works fine. However, when the user is working remotely and not connected to the VPN. They can access outlook client to check e-mail, but cannot schedule CMR hybrid session. They need to connect to the VPN just to schedule the meeting.

  Request: if we intend to put MSD XE in DMZ, this is s solution supported?

  Hi Steve,.

  This is not an unbearable deployment - the TAC perspective that it is only important that the FQDN of the server TMSXE with the booking service can be found via DNS and port TCP 443 is accessible from the outside.

  If you have additional questions, feel free to ask here or even create a TAC case and let me know the number.

  -Jonathan

• Configuration of the DMZ at R1213

  Hello

  I put implement R12 Configuration in a DMZ. We already have an existing instance of R12. Following Doc ID 380490.1 to implement the same, have chosen to proceed with option 2.4 that is to say, "with the help of Reverse Proxies only in the DMZ.

  I also talk about Doc ID 726953.1 that is specific to above the application method. Finishing with the configuration.

  My confusion is, how to start?

  Will I first clone web layer first, and then run adclonectx.pl?

  what I need to clone level apps.

  Help, please.

  Hello

  In this scenario, there is no cloning of any level.

  You just create a new directory in the $INST_TOP on the server exist for the web virtually outer layer.

  Kind regards

  Bashar

• Physical vs Virtual DMZ

  I implement the vCloud Suite of products in a multiclient environment and currently do not have a demilitarized zone.   In seeking to define what the DMZ network will look like, devrais I guess that I need one that is defined by a separation of physical networks such as the following:

  (Outside of the physical <>- physical <>- DMZ-<>- Firewall firewall network <>- internal network)

  Is to have a demilitarized zone in a conventional, as above, with two firewalls of both sides, always recommended?

  Can I do the same thing with POSSIBLE and when is it appropriate to set my DMZ in software vs hardware?

  Hello

  Well the following will work using only virtual Firewall:

  <->outside the physical switch <->outside Teddy <->VDS <->FW <->VDS DMZ <->FW <->Outside outside inside VDS

  Physical switch <->Teddy <------------------------>VDS DMZ DMZ DMZ

  Then attach a physical DMZ via the DMZ VDS and specific ports outside your chassis and a physical switch in the DMZ upstream.

  Or the following if you want to combine physical and virtual firewall

  Outside <->physics FW <->DMZ Phsysical Switch <->Teddy <->pvNIC <->DMZ VDS <->FW <->DMZ VDS from inside the DMZ

  If you want to use a DMZ or not depends on what you're really trying to do.

  Best regards
  Edward L. Haletky
  VMware communities user moderator, VMware vExpert 2009-2015

  Author of the books ' VMWare ESX and ESXi in the business: Planning Server Virtualization Deployment, Copyright 2011 Pearson Education. ' Of VMware VSphere and Virtual Infrastructure Security: securing the virtual environment ', Copyright 2009 Pearson Education.

  Virtualization and Cloud Security Analyst: The Practice of virtualization, LLC - vSphere Upgrade Saga - virtualization security Table round Podcast

• Configuration of the DMZ R12

  Hi all
  
  I intend to configure the DMZ in my CA.
  
  Application: node 2
  Database: 11 GR 2 RAC
  OPERATING SYSTEM: AIX 6.1
  Application version: R12.1.3
  Using 1 Cisco hardware load balancer
  
  Query:
  I intend to go for the option "using hardware load balancing with no. external Web tier" I want to put my application server to the outside world.
  I intend to create vritual machine in Apps node 1.
  
  for this I need a separate queries or can I use the same load balancer used for internal application servers?
  All configuration changes what should I suggest you get out of the team for this configuration of the DMZ network?
  
  Please suggest
  
  Thanks in advance

  You can check the Option 2.5: using hardware load balancing with external No. layer Web of MOS note:
  Oracle E-Business Suite R12 Configuration in a DMZ [ID 380490.1]

  You can also view the part of Cisco for hardware load balancer
  Implementation of load balancing across Oracle eBusiness Suite - Documentation specific Load Balancer Hardware [ID 727171.1]
  Thank you

• VSphere host in the DMZ

  I run a server from Vsphere to only serve clients located in the demilitarized zone using the local drive.

  I need to connect to our Vcenter server in our local business network.

  What network configuration preferred for this for maximum security of the host and our local business network?

  I was thinking about a pair of network adapters on a virtual switch just for the guests in the DMZ and for the rest of the virtual switch on our local corporate network.

  Our networking group thinks have the host in the demilitarized zone and control access through the firewall would be better.

  Or maybe a hybrid approach using a second firewall.

  Any help on this would be appreciated.  I read the Vmware in the doc of the DMZ, but I'd like to hear from someone with experience...

  Thank you

  Hello

  Moved to the security forum.

  I run a server from Vsphere to only serve clients located in the demilitarized zone using the local drive.

  First of all, you must realize that there are at least 2 areas of trust of network at work here. The network of the VM for DMZ VMs and Device Management/Service Console for virtualization management.

  I need to connect to our Vcenter server in our local business network.

  Well the vCenter Server really should be a firewall from the rest of your corporate LAN within a network of virtualization management.

  What network configuration preferred for this for maximum security of the host and our local business network?

  2 natachasery for SC/Management Appliance, 2 natachasery for VM networks.

  I would also use NO Local storage as Local storage can be damaged if the host has problems. That means bye-bye VMs. local storage is not a very good idea to a worry of availability or a concern for performance. ISCSI or FC are protocols very quickly compared to the local storage.

  I was thinking about a pair of network adapters on a virtual switch just for the guests in the DMZ and for the rest of the virtual switch on our local corporate network.

  2 for virtual machines. 2 for management NOT on the local network of the company directly.

  Our networking group thinks have the host in the demilitarized zone and control access through the firewall would be better.

  Or maybe a hybrid approach using a second firewall.

  They don't understand virtualization if they offer it.

  The real question is: how the DMZ is currently implemented? Is that the DMZ is currently implemented by using the switch physical separation or VLAN. If its VLAN, then where are they currently placing their TRUST? With themselves the most likely. If they use VLANs within the physical network you can use VLANs within the virtual network. If they don't think that this is the case, then they really need to know a little more about the coverage to the VLAN in the vNetwork regarding the attacks of layer 2 compared to the pNetwork (which is all about confidence and not authority). If they use the physical separation, then you continue to use the physical separation.

  The first step is to migrate your vCenter and appliances of consoles/service management ESX/ESXi to a network firewall virtualization management separately. You also place a bunch of Machines to jump within this network so that Admins use RDP to access machines jump where they perform the vSphere Client and other virtualization management tools which should never be executed from within your network of business directly.

  Once it is your management network is protected which solves the 3/4S of the current batch of attacks. Then you come to add the new cluster host in the network and let the virtual machines to live directly in the demilitarized zone.

  Personally, I use the physical separation of the separate pSwitches and vSwitches jut for loads of the DMZ, but I do not have a host ESX JUST for the demilitarized zone. I have and it works too.

  Any help on this would be appreciated.  I read the Vmware in the doc of the DMZ, but I'd like to hear from someone with experience...

  I would be very interested to see their reasoning behind their suggestions and how the current DMZ is designed and works. This is the real question. Once you know this, you can make the appropriate vNetwork suggestions.

  Best regards
  Edward L. Haletky VMware communities user moderator, VMware vExpert 2009, 2010

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