Restriction of ports by using Windows Firewall in ad hoc network

Similar Questions

• In MS SQL Server Management Studio, cannot add a port to the Windows Firewall exceptions list.

  I am trying to debug a sql script in the debugger to MS SQL Server 2008 and I received a message saying 'could not configure the Windows Firewall. Cannot add a port to the Windows Firewall exceptions list. "Use the Panle controls to manually configure Windows Firewall.

  Hi GusGomez,

  The question you have posted is related to the server and would be better suited in the Technet forums. Please visit the link below to find a community that will support what ask you
  http://social.technet.Microsoft.com/forums/en-us/category/SQLServer
   
  Hope this information helps.

• Can I use Windows Firewall or ZoneAlarm?

  Original title: Firewall Question

  I currently have AVG Antivirus and Spybot Search & Destroy running with the Windows Firewall. I am considering using ZoneAlarm Firewall. I used it in the past and it has seriously affected the performance of the computer, but the computer that I have now is three hundred times as powerful. Still, I believe it can be confusing for my children and wife to use. Should I bother install, or is Windows Firewall very well? I have Windows 7 Home Premium.

  Hello

  Alternatives usually leave a lot to be desired.

  Low-cost 3rd part firewall software are quite a lot of problems delayed. They all have
  compatibility, issues and offer only a few improved controls. In fact their problems often actually lower
  the overall security instead of laying. The Windows Firewall has no problem of compatibility and is
  extremely safe, if you know enough to work around most of the hype. Cost of firewalls software quality
  thousands. Most routers have hardware firewalls built in and those are much better additions
  for the money than any firewall at low prices and low-cost software.

  How to change the Notification settings of Windows in Windows 7 firewall - see also related articles
  section at the fair before the response section.
  http://www.SevenForums.com/tutorials/523-Windows-Firewall-change-notification-settings.html

  How to manage the firewall of Windows 7.
  http://www.thewindowsclub.com/how-to-manage-Windows-7-firewall

  How to use Windows Firewall with advanced security in Vista (also Windows 7)
  http://www.Vistax64.com/tutorials/92748-Windows-Firewall-Advanced-Security.html

  What's new in the Windows 7 firewall?
  http://www.windowsecurity.com/articles/whats-new-Windows-7-firewall.html

  ==================================================================

  AVG was cause or worsen many problems lately. Unfortunately, he seems to have
  joined the ranks of the too inflated with compatibility issues.

  If you want to uninstall AVG and then he and run the AVG removal tool to avoid problems of
  causing scraps left. The following recommendations to use in place.

  AVG removal tools
  http://www.Avg.com/us-en/download-tools

  List of tools to clean/uninstall anti-malware programs
  http://social.answers.Microsoft.com/forums/en-us/msestart/thread/407bf6da-C05D-4546-8788-0aa4c25a1f91/

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

  Here's what I use and recommend: (these are all free and very effective versions.)

  Avast and Prevx proved extremely reliable and compatible with all I have
  launched on them. Microsoft Security Essentials and Prevx have also proven to be very
  reliable and compatible. Use MSE or Avast and Prevx, Prevx 3 but not all.

  Avast Home free - stop any shields is not necessary except leaving Standard, Web, and
  Operation of the network.

  Prevx - Home - free

  Windows Firewall

  Windows Defender (is not necessary if you use MSE)

  Protected IE - mode

  IE 8 - SmartScreen filter WE (IE 7 phishing filter)

  I also IE always start with asset if filter InPrivate IE 8.
  (It may temporarily turn off with the little icon to the left of the + bottom
  right of IE)

  Two versions of Avast are available 5.x and 4.8 x

  Avast - home - free - 5.x stop shields you do not use (except files, Web, network, &)
  Shields of behavior) - double click on the icon in the Notification area - real time Orange - click on the
  Shield that you want to stop - STOP. To stop the Orange icon to show an error indicator-
  Click on the Orange icon - top right - settings - click on the status bar - uncheck shields you
  disabled - click OK
  http://www.avast.com/free-antivirus-download

  Avast 4.8 x - home - free - stop shields, you don't need except leaving Standard, Web,.
  and the network running. (Double-click the blue icon - look OK. - upper left - Shields details
  Finish those you don't use).
  http://www.avast.com/free-antivirus-download#TAB4

  Or use Microsoft Security Essentials - free
  http://www.Microsoft.com/Security_Essentials/

  Prevx works well alongside MSE or Avast

  Prevx - home - free small, fast, exceptional protection CLOUD, working with other security
  programs. It is a single scanner, VERY EFFICIENT, if it finds something come back here
  or use Google to see how to remove.
  http://www.prevx.com/   <-->
  http://info.prevx.com/downloadcsi.asp  <-->

  PCmag - Prevx - Editor's choice
  http://www.PCMag.com/Article2/0, 2817,2346862,00.asp

  Also get Malwarebytes - free - use as scanner only. If you ever think malware and that
  would be unusual with Avast and occasional Prevx running with the exception of a low level cookie
  (not much), to UPDATE and then run it as a scanner. I have a lot of scanners and they
  never find anything of note that I started to use this configuration.

  http://www.Malwarebytes.org/

  ==========================================================

  SpyBot causes problems with IE7 and IE 8. TeaTimer in its configuration and put the SBSD Service
  STOP and MANUAL - you can use SpyBot as a scanner at the request.

  Start - type in the search box-> find Services, at the top of the list, click straight on - RUN AS ADMIN.

  The value of MANUAL and STOPPED

  Clear the check box in the SpyBot TeaTimer - settings.

  Reboot and it won't load and can be run on demand.

  I hope this helps.

  Rob Brown - Microsoft MVP - Windows Expert - consumer: bike - Mark Twain said it right.

• Windows 7; Windows firewall prevents the discovery network, files and printers, sharing, public folder sharing and streaming media

  Windows Home Premium SP1, completely up to date.  Windows Firewall is enabled.

  Try to keep the file sharing and printers on a home network.  Try changing the settings on the control panel; All Control Panel items: Center network and sharing; Advanced sharing settings.

  When I try to change the option buttons for sharing, then click on save changes at the bottom of the page, the screen jumps to the network and sharing Center.  Object entering the settings advanced, no parameters have been recorded.   The comoputer restarting does not help.  I checked that the following services are running and set to automatic according to the http://answers.microsoft.com/en-us/windows/forum/windows_7-networking/cant-turn-on-network-discovery-and-media-streaming/98654e71-4bff-4dd3-acec-ffc3524d44a4;

  The base filtering engine
  DNS client
  Function Discovery Provider Host
  Function Discovery Resource Publication
  HomeGroup listener
  HomeGroup provider
  Server
  SSDP Discovery
  UPnP device host
  Windows Firewall

  When I stop the Windows Firewall service, I can activate the sharing I want.  Of course the windows firewall prevents sharing I would do on my network.

  I'm uncomfortable with Miss having a firewall work on my computer.  How to configure my Win 7 machine windows firewall to allow communications with my homegroup?  I tried to restore the default values.  This did not allow the communication.  I tried to find the homegroup settings in the advanced settings of the windows firewall.  No luck there.

  What should I do to configure my windows firewall to allow network discovery and file sharing of printers and media streaming and sharing?

  Hi stephanie,.

  Thanks for joining us out on Microsoft Community Forums.

  Looks like the Windows firewall prevents the discovery network, files and printers, sharing, public sharing of files and streaming media. We will analyze and identify the cause of the problem.

  You have a third-party antivirus installed on the computer program?

  Method 1:

  To turn on network discovery
  
  1. Open advanced sharing settings by clicking the Start button, then Control Panel. In the search box, type network, click Network and sharing Center, and then, in the left pane, click on change settings for sharing advanced.
  2. click on the chevron to expand the current network profile.
  3. click turn on network discovery and then click on save changes. If you are prompted for an administrator password or a confirmation, type the password or provide
  confirmation.

  The article below explains all about the network discovery:
  http://Windows.Microsoft.com/en-us/Windows7/enable-or-disable-network-discovery

  If any of these responses not solve the issue, let us then run the sfc scan and check if any file system is corrupt. I also recommend to perform a clean boot in order to find the root cause of the problem.

  Method 2:

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  a. open an elevated command prompt. To do this, click Start, click programs, accessories principally made, right-click Guest, and then click Run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click on allow.

  b. type the following command and press ENTER:
  sfc/scannow

  The sfc/scannow command. analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  More information on SFC scan found in this document:
  http://support.Microsoft.com/kb/929833

  See also:

  Open a port in Windows Firewall

  http://Windows.Microsoft.com/en-in/Windows7/open-a-port-in-Windows-Firewall

  Allow a program to communicate through Windows Firewall

  http://Windows.Microsoft.com/en-in/Windows7/allow-a-program-to-communicate-through-Windows-Firewall

  Hope this information helps. Get back to us if you have more queries about Windows.

• "Use Windows to configure my wireless network. is missing

  Hello:

  There is NO connection of Belkin Wireless adapter flashes to pick up the signal.

  Whenever there is no link, I need click Belkins utility in the system tray at the bottom to obtain, however, it keeps not connected and takes only 10-20 minutes.

  Moreover, I found when I clicked, Belkin icon > properties > network and found there is no "use Windows to configure my wireless network.

  How do I fix this problem?

  Thank you for your help in advance.

  Hello

  I suggest to follow the steps in the below links and let them know the State of the question.

  Wireless and wired network problems:

  http://Windows.Microsoft.com/en-in/Windows/network-connection-problem-help#network-problems=Windows-XP&V1H=win8tab1&V2H=win7tab1&V3H=winvistatab1&v4h=winxptab1

  To set up automatic wireless network configuration:

  http://www.Microsoft.com/resources/documentation/Windows/XP/all/proddocs/en-us/wlan_client_configure.mspx?mfr=true

  For more information:

  Follow the steps in the link to configure the adapter Belkin Wireless below:

  http://www.Belkin.com/support/DL/p75451_f5d8053.PDF

  If the problem persists, then I suggest you to contact the Belkin Support:

  http://www.Belkin.com/us/support

  I hope that the information above helps you.

  
  

• Issues with Dell desktop computer wireless and D-Link wireless network card. Only able to get wireless access by checking "Use Windows to configure my wireless network". This kind of file sharing impossible.

  original title: can't see the computer on wireless internet!

  I hope that's not too much detail, but I would like that the sequence of events to be clear...

  I have a Dell desktop computer that's probably six or seven years now.  It did not come with a wireless card, so I bought a DLink router and combo card wireless, install both with the DLink software.  It works beautifully.

  Later, we through my rep AT & T DSL, I got a Motorola modem/router with wireless capabilities.  I had plugged directly on my computer Dell desktop and moved to a Dell laptop DLink wireless receiver.  No problems.

  The Dell laptop is dead and the DLink receiver has not been used for a long time.  Family of my daughter moved to our place, and I have connected his desktop computers and laptop to wireless internet, using the Windows Connection Wizard.  Still no problem.

  I got a new ASUS laptop, I also linked using the Windows Wizard.  STILL no problem.

  Now, here's the problem comes.  I moved the Dell desktop computer, connected the DLink wireless receiver to it and I am able to get wireless access ONLY when I go into the properties of PC, click the wireless networks tab and check the "use Windows to configure my wireless network" box.  Then I can connect correctly, but I don't see this computer on my wireless network.  Bad luck... because I want to be able to access share files.  When I try to connect using different assistants of Windows, I get a message to the effect that, if I used another software to connect to the program, I can't use the Windows Wizard.

  So, what can I do to remove the original configuration of DLink completely and to connect to my wireless network using the wizards in Windows?  I uninstalled the software of DLink, but it seems to have no effect at all.

  BTW, Dell desktop computer is running XP, office computer of my daughter is running VISTA, and two laptops are equipped with Windows 7.  I can see all the computers on the network with the exception of the original Dell desktop computer wireless.

  Any help would be appreciated!

  Hi Joe and DonnaLoth,

  The network will have to be changed to allow the computer Windows XP join a workgroup.

  How to change a computer name, join a domain, and add a computer description in Windows XP or Windows Server 2003

  You can also read the following article.

  Networking of computers running different versions of Windows

• How to remove norton Firewall and only use Windows Firewall?

  When I start my computor it take 20-30 minutes to bring up the windows. and then it stops at each click of the mouse. We did almost everything.  His saysing two firewalls is on. try to use only windows firewall, but continuous norton wanting to use thiers.                 don't know how to get norton to stop.

  You really should post in this forum for assistance: http://answers.microsoft.com/en-us/windows/forum/windows_xp-security

  That being said...

  Please answer all the questions of diagnostic following by number in your very next answer (no need to quote this post):

  1. What is the full name of the installed Norton application (for example, Norton 360;) Norton Security Suite) and when your subscription expires?

  2 to give application Norton or McAfee application ever been installed on this computer?

  3. do you have a free trial Norton or a McAfee free trial come preinstalled on the computer when you bought it? (No matter if you have never used or activated).

  4. the computer is currently fully patched to Windows Update?

  ===================================================

  If the Norton application includes a firewall, you do not want to turn off (disable) the Windows Firewall. See http://support.microsoft.com/kb/283673

• I have eset node 32 Security Center to my laptop. wall of fire that I have to use windows firewall or eset antivirus .that fire wall is better microsoft essential security or eset node 32. should I have on both or just one and which?.

  ESET node 32 or windows defender or microsoft security essentials. ???

  Hello

  To add to the good advice of Malkeleah:

  Here's what I use and recommend:

  Avast and Prevx proved extremely reliable and compatible with everything I threw at them.
  Microsoft Security Essentials and Prevx have also proven very reliable and compatible.

  Avast Home free - stop any shields is not necessary except away from Standard, Web and network is working.

  Prevx - Home - free

  Windows Firewall

  Windows Defender (is not necessary if you use MSE)

  Protected IE - mode

  IE 8 - SmartScreen filter WE (IE 7 phishing filter)

  I also IE always start with asset if filter InPrivate IE 8.
  (Sometimes you have to temporarily turn off with the little icon to the left of the + bottom right of IE)

  Avast - stop home - free - all shields you do no need except leave Standard, Web and network running.
  (Double-click the blue icon - details look OK. - upper left Shields - those that you do not cancel).
  http://www.avast.com/eng/avast_4_home.html

  Or use Microsoft Security Essentials - free
  http://www.Microsoft.com/Security_Essentials/

  Prevx works well alongside MSE or Avast

  Prevx - Home - small, fast, exceptional CLOUD free protection, working with other security programs. It comes
  a scan only, VERY EFFICIENT, if it finds something to come back here or use Google to see how to remove.
  http://www.prevx.com/   <-->
  http://info.prevx.com/downloadcsi.asp  <-->

  PCmag - Prevx - Editor's choice
  http://www.PCMag.com/Article2/0, 2817,2346862,00.asp

  Also get Malwarebytes - free - use as scanner only. If you ever suspect malware, and that would be unusual with
  Avast and Prevx running except a low occasional (not much), updated cookie and then run it as
  a scanner. I have a lot of scanners and they never find anything of note that I started to use this configuration.

  http://www.Malwarebytes.org/

  I hope this helps.

  Rob - bicycle - Mark Twain said it is good.

• Cannot use Windows Firewall

  I can't use the Windows Firewall. Whenever I go to the control panel configuration, then Windows Firewall, it is said, "these settings are managed by the vendor McAfee Personal Firewall application". I tried to disable McAfee, but still the same message appears. Please help and thanks for watching it.

  Hello

  When you install a 3rd party firewall program, Windows Firewall is automatically disabled to prevent conflicts that could unintentionally cause corruption and possible false positives.

  Unfortunately, disabling McAfee will not solve the problem. It must be completely uninstalled for firewall Windows switch on automatically.

  Kind regards

  Patrick

• My PC will not download the "day of security for Microsoft XML Core Services 4.0 Service Pack 2 (KB954430)". Just use Windows Firewall.

  This problem started with no changes made on my PC.  I used a Webroot antispyware and combination product of anti-virus for more than a year.  The shield icon now appears in the lower right corner with the message that I need to download the update.  When I did the update, the shield of gold disappears for 20 seconds approximately and then reappears.  Concerned and confused about this issue.  Have spend most of the day trying to research on the problems of the various online sites.  Any help would be much appreciated.  Thank you.

  Hello

  Since that he has already installed several times, I was hiding these updates in Windows Updates-
  Click on in Windows Updates - HIDE (if they are still pending)

  How to hide or show an update of Windows Vista
  http://www.Vistax64.com/tutorials/72491-Windows-Update.html

  Then run this:

  How to reset the Windows Update components? -a Mr Fixit
  http://support.Microsoft.com/kb/971058

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

  If necessary:

  See this thread - try Srinivas fix (patch XP Vista version)
  http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/7de4b30a-40c6-445A-9392-28be9f92f5cf/

  More here if necessary:

  An update is available that improves the compatibility and the reliability of Microsoft XML Core
  Services 4.0 Service Pack 2 on a Windows Vista-based computer
  http://support.Microsoft.com/kb/941833

  See known issues and if necessary how to help him get to the sections here:

  MS08-069: Description of the update of security for XML Core Services 4.0: November 11, 2008
  http://support.Microsoft.com/kb/954430

  Update of security for MSXML 4.0 Service Pack 2 (KB954430)
  http://www.Microsoft.com/downloads/details.aspx?FamilyId=96a4413c-5261-4f69-83d0-932c430abd14&displaylang=en

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

  If necessary:

  KB954430 is a security update in order to get assistance directly from Ms.

  Since this is a security update, you can get free Support
  http://www.Microsoft.com/protect/resources/support.aspx

  Good luck.
  Rob - bicycle - Mark Twain said it is good.

• Tecra A2-use windows to configure my wireless network.

  I have this option checked, but frequently during the day the box is unchecked and I lose settings. Once checked once again everything is Ok. Does anyone else have this problem and found a cure?

  Hello

  I had this problem with configuring Wlan Windows but only because I used the Intel ProSet utility and clean windows option.
  If the Intel ProSet utility began then the windows option has been disabled because the Intel ProSet utility undertook the Wlan configuration

  I think you should check if some WLan 3rd party tools are not loaded in the background

• Using Windows 7 for XP wireless network

  Hello

  I'm running a Windows 7 laptop (HP G72 - B01) and a PC Windows XP Desktop PC (HP-M1260-uk) has a wired connection to the router Netgear and W7 laptop is connected wireless to the router for Internet.  What I'm trying to do now is to create a network between the two for file sharing.  The desktop PC has 802. 11B wireless LAN and it's turned on but neither computer can see each other.  I searched a lot from other internet sources for the answer (changed the two working groups of the same name, enabled the Group of 'work' on the W7 laptop and activated the sharing of files on two computers) but nothing seems to work.

  Any help would be greatly appreciated,

  Thank you

  Graeme

  Hello:

  I don't know that much on the network or the other. I was just lucky to have everything work after a couple fits and starts.

  Everything you do is via the router. You have your network configured as a Network Infrastructure, correct?

  I think you have 2 choices, Infrastructure or Ad Hoc and what you do are not ad hoc.

  Paul

• Using the Windows Firewall in advance mode.

  How to effectively use Windows Firewall? And how to configure it advances mode for receiving pop ups for in and out traffic?

  http://articles.TechRepublic.com.com/5100-10878_11-6098592.html

  Tap into the Vista Firewall Advanced configuration features

  Above link it explains everything to block/allow traffic be it.

  See you soon. Mick Murphy - Microsoft partner

• Windows Firewall is not using the recommended settings and I have no control

  Operating system: Windows 7 Ultimate
  All classes Microsoft offers updates installed from 19/09/12 @ 19:00
  _______________________________________________________________________________________

  I recently discovered that I have seem to be 'locked' on my firewall settings.  I discovered it not because I had problems with my firewall or internet but because I went to control panel to change some settings of firewall and found this:

  http://oi49.Tinypic.com/2r3h387.jpg

  So I press "Use recommended settings" and think computer for a few seconds and then nothing changes or happens.
  My firewall seems to work very well, but why I can't access its settings?

  The first thing I did was a scan of my computer with Microsoft Security Essentials and Spy-bot Search and Destroy.  Microsoft Security Essentials found a virus, but after I removed and restarted my computer the problem remains.

  I did a lot of research on this problem before posting here then here are the following things, I've tried.  Every possible solution is fixed at 1 photo:

  _______________________________________________________________________________________

  Possible solution 1: http://oi48.tinypic.com/2ng55hi.jpg

  When I type in "netsh firewall reset" this happens: http://oi46.tinypic.com/i2ouc1.jpg

  The rest of the commands seem to work, but after that I restarted my computer it had no effect.

  _______________________________________________________________________________________

  Possible solution 2: http://oi46.tinypic.com/2vmeh6p.jpg

  I do not have the other firewall on my computer.  I don't have Norton or McAfee that apparently caused this problem with other people.  There is no error message.

  When I right click on windows firewall "restart" is greyed out, but I can press start.
  Empty the column next to it with the State.  When I press start, it happens: http://oi48.tinypic.com/33cc4et.jpg

  _______________________________________________________________________________________

  Possible solution 3: http://oi47.tinypic.com/33nhu80.jpg

  Method 1: Windows event controller does not exist.  The base filtering engine is started and also shows as running in the Task Manager.  Authorization of firewall Windows Driver is already set on request.

  Method 2: SFC/SCANNOW not detected any problems: http://oi45.tinypic.com/11gj7fn.jpg

  _______________________________________________________________________________________

  Possible solution 4: http://oi46.tinypic.com/2lu30ut.jpg

  Method 1: Even as a solution as Possible 3.

  Method 2: I made a boot minimum and restarted my computer with ONLY Microsoft services (I disabled all startup unique programs and service not microsoft).  The problem persisted.

  Method 3: even as Possible 3.

  Method 4: Not applicable for me.

  Method 5: I downloaded the antivirus and used today at about 18:30.  No viruses were found.

  _______________________________________________________________________________________
  I tried other things:

  If I try to use windows firewall advanced in this case: http://oi47.tinypic.com/hu1y0o.jpg

  According to Task Manager Firewall is not running and when I try to start it, this happens: http://oi45.tinypic.com/5vdddy.jpg

  _______________________________________________________________________________________

  So far I have not found any that contributes to this problem.  Any help would be appreciated.

  Hello

  Method 1

  I suggest you to run a scan using Windows Defender Offline offline just to make sure that the computer is clean, you have to download it from another computer if possible.
  http://Windows.Microsoft.com/en-us/Windows/what-is-Windows-Defender-offline

  Method 2
  I think an upgrade on the spot or complete reinstall would be necessary due to unknown changes that may have been made by the virus. You must back up all your files by using the option to be sure. If you perform a full reinstall you should analyze your backup before restoring the files.

  How to perform an upgrade on the spot on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2
  http://support.Microsoft.com/kb/2255099

  Note: Running chkdsk on the drive if bad sectors are found on the disk hard when chkdsk attempts to repair this area if all available on which data can be lost.
  http://Windows.Microsoft.com/en-us/Windows7/back-up-your-files

• Ethernet and Windows Firewall

  Hello

  I need to know what Windows Firewall rules must be defined for TestStand/CVI see the ARP protocol. We see nothing, no ethernet traffic.

  I have a system (Army Gold Master 7, using TestStand and CVI) who has "standard" Government firewall rules We strive to communicate by Ethernet to specialized devices and we see no traffic unless disable us the firewall. We are not on the internet (not allowed by gov). The specialized devices send a broadcast request for IP but the software it never sees.

  I added (incoming and outgoing) rules to allow traffic to and from my application (CVI app that does a lot of TestStand active X calls). In the logs I saw something on cviproxy so I put rules to allow that. I've set allow rules for TestStand Runtime engine. I also disabled Windows defender.

  Any suggestions? BTW, we will not disable the firewall once it is deployed.

  Thank you

  Hey Joe,

  I did some checking, and generally, CVI does not implement itself - treatment rather ARP packet, it uses Windows built in functionality to receive ARP packets and assign IP addresses. ARP is contained in the Protocol Ethernet himself and is at a lower level than the concept of ports, so that Windows Firewall cannot directly block ARP packets.

  Your software CVI aims to process ARP packets in some way, or are you just wanting to communicate with devices via Ethernet? If it's the last, then the assignment of intellectual property should arrive outside the CVI and regarding the CVI you must only make sure that the correct port has been opened for communication with the specialized unit. This port number would be depends on the configuration of the device itself.

  When you disable the firewall and are able to communicate with the device, how is the appliance gets its IP address? For example, it is automatically assigned by Windows or your router (with DHCP) or it has a static IP address assigned to him? It is possible that the IP address is assigned, but given that the specific communication port is blocked by the firewall, the communication can occur.

  I hope this helps a little, and if you can give us the answers to these questions, we can provide I hope to better understand the situation.