ISA server in the DMZ Cisco Firewall box

Similar Questions

• Is it possible to put a server on the DMZ SQL

  Hi all

  He would ask about the deployment of PIX. Is it possible to put a server on DMZ SQL (or one of 5 exclusion inside the interface interfaces) and simply define a NAT to allow inside the user access to the DMZ? Also without allowing the outside user access to SQL server. We intend to set a SQL on a DMZ server, such that unathourized internal users will not be able to know the actual address of the SQL Server.

  Are there problems which should be considered on this deployment?

  Thanks in advance,

  udimpas

  Hi Udimpas,

  Yes, your scenario is possible. You can put SQL Server on the DMZ network and allow access to inside users. at the same time, you can also block the access from the outside.

  Let's say, your sql IP address is 192.168.1.10 & your home LAN is 10.1.1.0/24. You can do the following:

  NAT (inside) 0 access-list sheep

  access-list allowed sheep ip 10.1.1.0 255.255.255.0 host 192.168.1.10

  by doing this, you have not nat all traffic from your inside sql server. In case you have defined everything inside your network access lists, you must open port 1433.

  list of access within permit udp 10.1.1.0 255.255.255.0 host 192.168.1.10 eq 1433

  You should not add the ACL above, if you have no restrictions from the inside, from now.

  I hope this helps... all the best...

  REDA

• Best way to lock a security server in the DMZ

  Hello

  Are there best practices or recommendations of VMware for the locking of a security server in the DMZ?

  Any suggestions are welcome.

  THX,

  -sf

  There is a Project Server View of Security hardening guide referenced here - http://communities.vmware.com/thread/300885

  Mark

• Cannot access the Web server in the DMZ from the inside using IP global

  Hi all

  I hope it's a very simple question.

  I'm running a PIX 515 firewall v6.3. I set up a Web server in my DMZ and use static NAT for re-branded it overall static IP address. Access from the outside of the demilitarized zone works remarkably well. I can access inside the interface Web site using the internal IP, but I can't access it from inside interface using the global IP are entrusted to him.

  Is there a particular reason why this would not be allowed? My feeling was that the request would be forwarded via the external interface (as it is a global IP address) and then be bounced back by my sense of the ISP the request would come to the new external interface (as the static NAT is applied to the external interface).

  However if I try and access the global IP from my inside interface, then the browser can not find the server.

  can someone explain why this is so? Any information would be appreciated.

  see you soon,

  Wayne

  ---------------------------------

  6.3 (3) version PIX

  interface ethernet0 100full

  interface ethernet1 100full

  interface ethernet2 100full

  ethernet0 nameif outside security0

  nameif ethernet1 inside the security100

  nameif dmz security50 ethernet2

  hostname helmsdeep

  domain p2h.com.sg

  fixup protocol dns-length maximum 512

  fixup protocol ftp 21

  fixup protocol h323 h225 1720

  fixup protocol h323 ras 1718-1719

  fixup protocol http 80

  fixup protocol they 389

  no correction protocol rsh 514

  fixup protocol rtsp 554

  fixup protocol sip 5060

  fixup protocol sip udp 5060

  fixup protocol 2000 skinny

  fixup protocol smtp 25

  No fixup protocol sqlnet 1521

  fixup protocol tftp 69

  names of

  acl_out list access permit tcp any host 203.169.113.110 eq www

  access-list 90 allow the host tcp 10.1.1.27 all

  pager lines 24

  debug logging in buffered memory

  Outside 1500 MTU

  Within 1500 MTU

  MTU 1500 dmz

  IP address outside pppoe setroute

  IP address inside 192.168.1.1 255.255.255.0

  dmz 10.1.1.1 IP address 255.255.255.0

  no failover

  failover timeout 0:00:00

  failover poll 15

  No IP failover outdoors

  No IP failover inside

  no failover ip address dmz

  location of PDM 202.164.169.42 255.255.255.255 inside

  location of PDM 202.164.169.42 255.255.255.255 dmz

  location of PDM 10.1.1.26 255.255.255.255 dmz

  location of PDM 10.1.1.26 255.255.255.255 outside

  location of PDM 172.16.16.20 255.255.255.255 outside

  location of PDM 192.168.1.222 255.255.255.255 inside

  history of PDM activate

  ARP timeout 14400

  Global 1 interface (outside)

  Global (dmz) 1 10.1.1.101 - 10.1.1.125

  NAT (inside) 1 0.0.0.0 0.0.0.0 0 0

  NAT (dmz) 0-list of access 90

  NAT (dmz) 1 0.0.0.0 0.0.0.0 0 0

  static (dmz, external) 203.169.113.110 10.1.1.27 netmask 255.255.255.255 0 0

  Access-group acl_out in interface outside

  Timeout xlate 03:00

  Timeout conn 01:00 half-closed 0:10:00 udp 0: CPP 02:00 0:10:00 01:00 h225

  H323 timeout 0:05:00 mgcp 0: sip from 05:00 0:30:00 sip_media 0:02:00

  Timeout, uauth 0:05:00 absolute

  GANYMEDE + Protocol Ganymede + AAA-server

  RADIUS Protocol RADIUS AAA server

  AAA-server local LOCAL Protocol

  Enable http server

  http 192.168.1.222 255.255.255.255 inside

  enable floodguard

  string fragment 1

  Console timeout 0

  Terminal width 80

  Code v6 pix or less don't let you have traffic "back" or return flow via the same interface on which it was sent. Having also your bounce back off of an external server traffic is never a good idea, because you won't be able to distinguish which and rogue attacks by spoofing someone outside your network.

  Since you are using pix 6.3 code, you may be able to outside the NAT. Add this static to your config:

  static (dmz, upside down) 203.169.113.110 10.1.1.27 netmask 255.255.255.255 0 0

  You may need to run a clear xlate after adding the new static statement. Note that the interfaces: it's demilitarized zone, inside inside, dmz.

  I would like to know if it works.

• second Web server on the DMZ not visible outside

  With the help of a PIX 515e

  I have several Web servers in the DMZ, the first web server and the mail server are set up with the port mapping for the PIX outside IP address of the interface.

  The second and third (inside interface) of the Web servers are configured with static mappings and access lists.

  I can see the first n the mail very good server webserver, but I can not see servers in second or third.

  What have I done wrong?

  I suggest you analysze traffic with the command to 'capture' PIX and sniff traffic on the DMZ and outside traffic.

  Check if packets arrive to the external interface, if it reaches the web server and is at - it a response.

  example of

  IP access-list 120 allow any HOST 207.236.60.35

  capture the access-list 120 vpncap OUTSIDE interface

  See the access-list 120 retail vpncap capture

  or

  https://PIX-IP-address/capture/vpncap [/pcap]

  To remove the capture:

  No vpncap capture

  sincerely

  Patrick

• question of remote server in the site Configuration dialog box.

  Hello

  I received client ftp information so that I can connect to its server to download files.

  The new CS5 box installation site is a bit different (hard)...

  I set up the folder on my desktop to download and set up the site (directions).

  Problem: under the "Servers" tab, there name address remote connection and tests... mine has two lines of info.

  The top one is my ftp from my personal site.

  Below, it is the only one that I created just to get the download and I gave her a false name.

  I have to remove the top? Because when I go to download it downloads files in my personal site - not customers. Or, should I uncheck "remote" from the top and activate at the bottom.

  I don't want to affect my site at all. Please explain how this new method works... How can I control + choose what server I want content to download from.

  I mean, if I had to remove this dialog box mine, then switch back to the my site dialog box, my connection to the remote server are deleted as well?

  Thank you!

  Too bad. I have it.

  I hesitated to experiment, but it seems that you can select a "remote" at the same time, so all I had to do was click on the customer.

• ESXi Server and the DMZ security

  Hello world

  I currently have around 5 physical web servers sitting in a demilitarized zone. My plan is to convert all these web servers to virtual machines and host them on an ESXi server.

  I would like to host the ESXi Server actually in the demilitarized zone, all the VMs on the ESXi box would be public facing anyway. Does anyone know of a good reason not to do from a security point of view.

  I guess my main concern would be the area of ESXi being threaten. Of course, I would limit the traffic through the firewall rules.

  I would like to know your opinion on this and if someone has done this before?

  Thank you very much

  Chris

  Take a look on:

  http://www.VMware.com/files/PDF/dmz_virtualization_vmware_infra_wp.PDF

• PIX with H & S VPN DMZ hosting web server to the hub

  Ok

  Heres a problem which I think would be quite common for these even remotely conscious of security. Unfortunately, my knowledge of the PIX (as well as other Cisco devices) is still in phase of 'growth '.

  So, here's the problem. I have a WAN put in place with PIXen and SonicWalls, we are set up in a design essentially Hub and Spoke (fine ok so it is partially meshed). We recently decided to pull the trigger on getting a 'real' web site and everything went relatively well that getting up and rolling. (even with my notice of 3 days/deadline), but here's the problem: I set up the web server on the DMZ to the hub pix, and I figured out (the easy part) how to set things so in the Home Office, people can connect to the web server by using the internal address, but I don't know what to do for people in remote offices with VPN home connections. I tried to define static routes, I tried to add the DMZ to the VPN trigger, I tried to do both of the last things together, and I checked that I have rules allowing traffic to the VPN outside the DMZ on the inside. So, what else can I I get?

  I have no problem by configuring a PIX for all basic ups and VPN even at this stage, I can do most of it through the CLI (even if I still want to do more through the PDM). My biggest stumbling block on the PIX has so far was when I actually involve this pesky DMZ...

  I actually two PIX in my office, two for my network domestic (one for my place in the States and one for my place in the Japan), so if you can help me, I'll be the two problems and do not forget to give a rating of excellent reviews!

  so I guess that leaves me to the place where I scream...

  Help!

  and I humbly await your comments.

  the current pix configuration should look at sth like this,

  IP access-list 101 permit

  IP access-list 110 permit

  Global 1 interface (outside)

  (Inside) NAT 0-list of access 101

  NAT (inside) 1 0.0.0.0 0.0.0.0 0 0

  Permitted connection ipsec sysopt

  Crypto ipsec transform-set esp-3des esp-md5-hmac superset

  myvpn 10 ipsec-isakmp crypto map

  correspondence address card crypto myvpn 10 110

  card crypto myvpn 10 set by peer

  superset of myvpn 10 transform-set card crypto

  interface myvpn card crypto outside

  ISAKMP allows outside

  ISAKMP key

   address netmask 255.255.255.255
  
  isakmp identity address
  isakmp nat-traversal 20
  isakmp policy 10 authentication pre-share
  isakmp policy 10 encryption 3des
  isakmp policy 10 hash md5
  isakmp policy 10 group 2
  isakmp policy 10 lifetime 86400
  now, to add dmz on top of the existing vpn, add the following to the pix (and apply the same concept on the remote end device)
  access-list 102 permit ip
  access-list 110 permit ip
  nat (dmz) 0 access-list 102
  

• statics of the DMZ on the inside

  I have a mail relay (gateway) in our DMZ. It stops working if I remove the following static statement:

  static (dmz, upside down) insidemail insidemail netmask 255.255.255.255

  where insidemail is the name of the internal mail server.

  This static doesn't make much sense to me, but as mentioned previously, if it isn't there, I can't get on the mail server internal on port 25.

  BTW, my acl for mail in the demilitarized zone is

  dmz_acl permit tcp host DMZmail host insidemail eq 25 access-list

  Hi binaryflow,

  For any server on the DMZ can access inside server, it must first see the server to an IP address. Only after this accessibility of intellectual property, it will establish communication with that server. The accessibility of intellectual property can be obtained in two ways:

  (1) given the server on his already existing private IP. to do this, without the server natting to the DMZ interface. for this reason, we use the command

  static (dmz, upside down) insidemail insidemail netmask 255.255.255.255

  You can also use these commands:

  NAT (inside) 0 access-list sheep

  access-list allowed sheep ip host insidemail dmz host

  (2) you can also make a static on a few other IP and allow access to this IP address to access list.

  In any case, the server should operate, accessibility of intellectual property is the first criterion. without that it will not work.

  I hope this helps... all the best...

  REDA

• Server DNS in DMZ or inside?

  I am currently using a Win2003 Server my DMZ on the inside of the network. It is also the server that I use as my domain controller.

  I'm reviewing some of my policies and considering some changes. Is it better to have my DNS servers inside or on the DMZ?

  Roland

  It is not clear to me from your post what is the use of the DNS server, and who would influence where you place the server. If the DNS server is only accessible by internal users, then set up inside is fine. But if the DNS server is also the access of anyone outside then I think you need to place the DNS server in the DMZ.

  HTH

  Rick

• I install the spilitter of bandwidth for isa server 2006 after the stoped.i of the microsoft firewall service cannot start this service and I take the error 1068-how do I do

  I install the spilitter of bandwidth for isa server 2006 after the stoped.i of the microsoft firewall service cannot start this service and I take the error 1068-how do I do?

  Hello

  Your question is beyond the scope of these forums.

  Please use the following links for that matter.

  Network Infrastructure servers Forum:
  http://social.technet.Microsoft.com/forums/EU/winserverNIS/threads

  Category of the Windows Server:
  http://social.technet.Microsoft.com/forums/EU/category/WindowsServer

  Concerning

• wrt160n with cisco pix and isa server 2004 config

  Hello

  I am installing a configuration to which my wrt160n router should work, but it is not at present

  .. the is the problem:

  Internet proxy - pix cisco - ms isa 2004 - 4 network cards <> lan1, lan2, dmz and wlan networks

  The wlan network card will only be my lan wireless for internet access interface. The isa server wireless lan nic has been configurered with an IP 10.0.10.1. / 24

  Configure the interface to internet wrt160n with static ip 10.0.10.2 / 24 and bridge 10.0.10.1 2 i'net addresses of dns.

  My dhcp server config is 192.168.100.x /255.255.255.0 and the same dns addresses i'net 2. NAT is disabled because isa server nat for all networks

  where is mistaken or do I forgot something... Help, please

  Activate NAT on the WRT or add a static route for 192.168.100.0/255.255.255.0 to 10.0.10.2 on your isa server computer.

  Of course, you only want wireless, there is not need to use the WRT as a router. You can set the WRT back to DHCP on internet settings. Set the address LAN IP of 10.0.10.2 with a mask of 255.255.255.0. Disable the DHCP server on the WRT. Then one of the LAN wire ports of the WRT to the ISA Server. Do not use the internet port on the WRT!

  Now, you have configured the WRT as simple access point. So you should use your ISA Server to serve DHCP IP addresses inside 10.0.10.0/24...

• EBS 12i on Cloud server with the public IP address but no DMZ

  Hello

  I installed Oracle EBS in a server (such as AWS EC2) cloud with a public IP address. I'm simply looking for personal learning and knowledge about security risks. As there is no given production safety is not serious at this point.

  Also, I don't mean to enter the configurations of the DMZ at the moment.

  I am able to access APPS internally under the server on port 8000 with URL http://<server:8000>/OA_HTML/AppsLogin. but I'm unable to access the URL above on internet.

  
  

  The environment is EBS 12.2.0 on Oracle Linux 5.11.
  

  
  

  I tried the options following, but so far without success.

  1. I tried to completely disable the Linux and SELinux firewall on the server. I have also authorized above URL in my personal office. So the 8000 port is not blocked anywhere.

  2, I followed this note to try to set it up on port 80, but still without success-> configuration Oracle E-Business Suite Release 12 on Amazon Cloud Infrastructure (Doc ID 1205963.1). But you should know that mine isn't on AWS EC2 but similar model.

  So simple question is how can I access front-end EBS on internet (DMZ) using port 8000? I do need to update httpd.conf of EBS Webtier (besides point 2 above)?

  Any help will be greatly appreciated. Thank you.

  See you soon!

  Gray

  Hello

  I discovered that I was using the CDN was blocking port 8000. So when I bypassed the CDN, then I could manage to access the URL with the port 8000.

  Thanks a lot for your help on this one.

  Concerning

  Gray

• I want to manage my web isa with isa server management.help me how do I make and the port that should be used?

  I have an isa Server 2006
  I want to use the vpn connection and and limit internet access bandwidth:
  1. suggest a pdf for learning about this
  2 - to use web isa management utility which port should I use?

  Ask in the forum ISA Server:

  http://social.technet.Microsoft.com/forums/en-us/Forefrontedgegeneral/threads

• UCCX 10.6 - Error Message: "the request to open a session in the Unified Cisco CCX application server has expired. Please make sure your system is online and try again"

  Hi guys,.

  My client has a solution with UCCX 10.6 and the system presented today, in the morning (08:00 more or less) followed the error message: "the request to open a session in the Unified Cisco CCX application server has expired. Please make sure your system is online and try again." After a minute the system back to work without nothing action. I saw the newspapers MIVR and not identify the possible cause of the problem.

  Can I help me, please

  Thank you

  Wilson

  These newspapers are not in a readable format. Look for something like lost connection

  Concerning

  Deepak