I've been blocked because I'm port scanning?!

Servers from work keep throwing blocks up on me because they said they have detected port scanning coming from my IP. Before I go any futher, please forgive me for not knowing my macbook pro inside out. I've google just about every combination of phrases and keywords that halfway relate to my issue and I'm still coming up blank. I downloaded Little Snitch to see if I had anything suspicious going out, but the only thing I see, and it concerns me, is "mDNSResponder" hitting about every 4 seconds. it doesn't say there are any actual connections, but something is going on. Under connection stats it says: UDP ports dns(53) followed by a long list of high numbered ports (49411 & up). It also has 2 IP address associated with it, but not sure if that has anything to do with it.
I saw a lot of talk about finding the mdnsresponder.plist, but that file is not on my mbp. I've gone back as far as my time machine allows and don't see that file either. I just reinstalled a fresh OS and I still have this problem.
Thank you in advance for any help!

No PC on my network, but I did install Windows 7 a few weeks ago on Parallels 7. It didn't install correctly, so I uninstalled. I haven't attempted since.

Similar Messages

This message has been blocked because the HELO/EHLO domain is invalid

Hi friends,
We are using cisco ironport c170. Today we cannot send email for particular email id(domain). the error msg as below,
Diagnostic information for administrators:
Generating server: sgm.svc.com.sg
[email protected]
[182.**.**.51] #<[182.**.**.51] #5.0.0 smtp; 5.1.0 - Unknown address error 554-'5.7.1 [SPAM] This message
has been blocked because the HELO/EHLO domain is invalid.' (delivery attempts: 0)> #SMTP#
Original message headers:
X-IronPort-AV: E=Sophos;i="4.97,682,1389715200";
d="scan'208,217";a="3362301"
Received: from abcct01.abc.com ([10.**.**.33]) by
sgm.svc.com.sg with ESMTP/TLS/AES128-SHA; 19 Mar 2014 11:17:45 +0800
Received: from abcMB01.abc.com ([fe80::99bb:22a0:nnaa:25cc]) by
abcCT01.abc.com ([::1]) with mapi id 14.03.0123.003; Wed, 19 Mar
2014 11:18:13 +0800
From: "test" <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Testing Email
Thread-Topic: Testing Email
Thread-Index: Ac9DIdjTsP9HUS2QTF6cZp6PKztE8g==
Date: Wed, 19 Mar 2014 03:18:12 +0000
Message-ID: <[email protected]>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [10.**.**.210]
Content-Type: multipart/alternative;
boundary="_000_1329D1768D6FBE4A90657F034B26A7E217D7ADD5abcMB01_"
MIME-Version: 1.0
Thank you.

The HELO/EHLO domain that your Cisco IronPort Email Security Appliance (ESA) uses is based on the hostname you configure for your delivery interface under Network -> IP Interfaces. Please ensure that a valid hostname is configured. This hostname should match the rDNS records for the public IP address used by your ESA.
Once addressed - you should be able to take the domain in question, and attempt to telnet port 25, and attempt the standard SMTP testing...
$ telnet mail.test.com 25
Trying XYZ.XY.124.XX...
Connected to mail.test.com.
Escape character is '^]'.
220 mail.test.com ESMTP
helo foo.com
250 mail.test.com
mail from: [email protected]
250 sender <[email protected]> ok
rcpt to: [email protected]
250 recipient <[email protected]> ok
data
354 go ahead
Subject: Test
TESTING
250 ok: Message 8102 accepted
I hope this helps!
-Robert
(*If you have received the answer to your original question, and found this helpful/correct - please mark the question as answered, and be sure to leave a rating to reflect!)

My ichat has been blocked because my user name or password is incorrect , plz need help to unblock ?

Please help me unblock my ichat

Hi,
Could you tell us the iChat version and whether this is an AIM Login ?
If it is an AIM Login can you also specify whether it is AIM, @mac.com, @me.com from Mobileme days or @me.com from an iCloud registration.
If AIM with one of the Apple IDs listed then the password needs to be 16 characters or less.
Apple prompt you to have longer (more secure) but the AIM servers can only cope with/up to the 16
For @mac.com and older @me.com use iForgot to change the password or do a Web Browser login to iCloud and change your password there.
The message you have is typical of AIM
It tends to be the password they are talking about because if the name is wrong it cannot even check further and will tell you the name does not exist. (the message is different).
10:41 PM Saturday; January 7, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

This website has been blocked for you!

Steps to access this website again:
1. Click unlock button below
2. Pick survey to verify that you are human
3. Complete survey
4. Continue using this website
Click here to unblock
This website has been blocked because of your recent activity. Your actions have been marked as spam bot like, to visit this website again follow instructions on the left. This is made for security reasons. Please take your time to go through the verification process to restore you access to blocked websites, thank you for your time!
Please HELP , Thanks.

Where are you getting this issue? Please explain so we can assist you further.
Thanks!

Outgoing port scan to find blocked (by ISP)/open ports

Hi,
How can I do a port scan (network ports, where web pages/applications use port number 80 for example)? I would like to find out if my ISP are blocking ports -- get some hard data/facts. I've tried using an online port scanner (one that operates from a web page/server) and according to it, all my ports are blocked -- but I now realise that's incoming (to me) where I didn't initialise the communication. So I suppose to find out what I want I need to initialise the communication -- outgoing (from me) communication. How can I do this? Any software / utilities available anywhere? I tried the "port scan" in Network Utility but this never reported anything. Maybe that will do what I want but I didn't have it set up properly possibly?
Any suggestions / ideas much apprecaited.
Cheers,
John.

Hi,
I'm not sure what you're asking.
What I'm asking about is in connection with the action that some ISP's take described as "traffic shaping". I know they are filtering/blocking because all P2P applications stop working for a period of time each day while email and web pages continue to work fine for example. I'm thinking of complaining to varous organisations because I have it in writing from the ISP they don't do this. They do, but I just want a bit more factual data first, before spending time and money making official complaints.
ISP's rarely block outbound packets
Well there's traffic shaping of some sort happening. I've found out that all incoming initialted outside packets are blocked but things still work fine so I assumed it must be outgoing which are being blocked.
If you can't make an outbound connection, it's usually the return (ACK) packet that gets blocked.
Right, I see. In that case another cooperating machine is needed to find out what I'm after I suppose.
However, most firewalls have a rule that allows packets through that are part of existing connections. That allows you to browse the internet no matter what source port your browser uses.
This isn't about a protection, it's about an ISP stopping/filtering certain uses (ports) via their connections because they don't like it -- too much band width use probably.
By far the best packet sniffer is Wireshark (formally Ethereal) for display of the capture.
From what's said above, a packet sniffer isn't going to be enough right? There needs to be two machines, me sending to another on various ports and it replying on the same port and both machines keeping a log of what's been sent and received, then a comparison made to see what made it and what didn't --- I guess. I wonder if there is such a service, piece of software, whatever, out there?
Is your computer behind a router in your home? Of course that would include Airport. If so, that is more likely the culprit than your ISP.
Yes an AirPort base station. Say "that is more likely the culprit than your ISP" again after visiting http://www.reviewcentre.com/review210703.html and searching the text for "traffic shaping" a few times! I'm pretty sure I've got the base station set up fine. And I think it's more likely my ISP (the one reviewed at that link) is the culpret. P2P software stops working, well it varies, but it reliably stops during "peak hours". It's the ISP for sure.
I don't know any ISP that blocks all ports.
Well, for incoming, according to the http://www.websecurity.mobi/network-security-audit/178-no-open-ports-my-machine- obviously-rediculous.html (which is me expressing surprise about all incoming ports being blocked) my ISP does. Apparently there is quite a difference between incoming and outgoing. Stops people using their machine as any kind of server (according to that link). One thing I do notice is that doing:
sudo tcpdump -v -x -s 128
on the command line while I'm not doing anything on the internet results in nothing -- complete silence as it were. On the dial up connection I've just left doing that command there was stuff coming in all the time -- who knows what, but the complete silence on my new broadband connection would back up the idea that all incoming ports are blocked. I could be wrong of course.
"nmap" is probably the best portscanner available but as you discovered, OS X has one builtin that you can access through the Network Utility.
Oh right I didn't know they were the same thing. I found that the port scan in NU didn't do anything. I left it for hours. There was an IP address which I left as it had filled it in itself. Maybe I should have changed that? How can I get the right address, or does it usually fill it in correctly itself?
What actually does a port scanner like that one do? Send something out? To what? And how does it know if it got there?
It seems to me to get what I need there needs to be first a suitable piece of software, second another computer running the software ready for my computer to talk to and to communicate multiple times and see what happens. My point is it's not just a piece of software that's needed it's also another cooperating computer elsewhere that needed? Otherwise what's the testing software going to talk to to see if the channel is working?
I'll look into the Port Scan in NU again, see if I can get some actual results from it this time. On a broadband connection I left it for about, I don't know, 3 hours maybe, got nothing.
Cheers,
John

When I try to download the latest version of iTunes on my iPod Classic I get the message that "iTunes has an invalid signature" and that "Content was blocked because it was not signed by a valid security certificate. Anyone know how to fix this?

When I try to download the latest version of iTunes from apple.com, I get the message "Content was blocked because it was not signed by a valid security certificate."When I open iTunes and try to download the latest version there, I get the message "iTunes has an invalid signature. The download has been removed." I have also gotten an Internet Script Error stating that an error has occured in Line 0, Char O and that "Access is denied to images.apple.com/global/scripts/lib/iepngfix.htc." This problem has never occurred with earlier versions of ITunes. Anyone know how to fix this problem?

Are you downloading iTunes form an Apple website or somewhere else? If the answer is somewhere else, try downloading it from Apple. Click on iTunes in the black menu bar above and go from there.
Let us know what happens.

How to Block / Hardening of "Unused Ports" in OracleAS-10gAS

Hi All,
I have installed Oracle 10gAS PatchSet-2 9.0.4.2.0 and Windows-2000 SP-4 OS. The Both instances (INFRA & Mid-Tier) are installed on same box. My AS is working fine and all components are working great.
+
I can find-out the ports being used/configured by 10gAS of this installation. Rest all other Ports are open as such on this OS and are not being used. So basically i want to "Block all those Unused Ports of this 10gAS installation"
1. Is it Possible..? If Yes! how to start about this.
2. Does Oracle Provide a Documentation on this or the details of this is included anywhere in any of the Docs.?
This has been pointed out by one of our Corporate Auditors who has audited our entire IT Infrastructure setup and given us that comment. Can anybody would help me in this regard or suggest me tips / docs. which could be useful to me. Looking for ur help.
Regards,
Kamesh Rastogi

Hello,
I would clarify what i need and intend to do......
Let say my HTTP Server is configured and listening at port 7779 & 7778. And the range of this is 7777 - 7999 as provided by App.Serevr.
SO i want to block all the ports of above range and ONLY want to open or allow requests coming for Port No. 7779 or 7778.
What all is being used by App.Server is know to us and we can find it out and list it....but how to block them...here in App.Server.
Regards,
Kamesh Rastogi

Your version of Outlook has been blocked

Brand new machine, freshly patched, all apps new, new, new.
Our email administrator, may he rot in a very warm place, has blocked Outlook 2007.
Creation of a Outlook 2007 profile followed by firing up Outlook 2007 got me a message "You version of Outlook has been blocked".
Unfortunately, a simple uninstall of Outlook 2007 and reinstall of Outlook 2003 along with a new profile still leaves me with the same message, "Your version of Outlook has been blocked".
Am I looking at a complete uninstall of Office 2003 and 2007 followed by a registry purge of anything Outlook then reinstall both and patch, patch, patch or can I get away with replace the following 4 files from a known good and working Office 2003 machine. These files were mentioned in a MS tech document as the ones checked by Exchange server to block versions of Outlook.
File name
Outlook.exe
Outllib.dll
Msmapi32.dll
Emsmdb32.dll

I have asked questions on the website answers from microsoft but somebody keeps editing my post, deletes my post and then removed the complete question I have asked. Now I see that my profile has been blocked ? Can anyone help me because what i'm experiencing
here in the Benelux right now is beyond abnormal.

My icloud id has been disabled because i forgot my password now i cant start my phone. plz help me

my icloud id has been disabled because i forgot my password now i cant start my phone. plz help me

Locked Out, Forgot Lock or Restrictions Passcode, Need to Restore Your Device: Alternative Solutions
    1. Forgot passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support
    2. Use iTunes to restore your iOS device to factory settings - Apple Support
    3. About Restrictions (parental controls) on iPhone, iPad, and iPod touch - Apple Support
If all else fails: Place your device into recovery (DFU-Device Firmware Upgrade) mode:
Follow these steps to place your iOS device into recovery mode. If your iOS device is already in recovery mode, you can proceed immediately to step 6.
   1. Disconnect the USB cable from the iPhone, iPad, or iPod touch, but leave the
       other end of the cable connected to your computer's USB port.
   2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds
       until the red slider appears, then slide the slider. Wait for the device to turn off.
              * If you cannot turn off the device using the slider, press and hold the
                Sleep/Wake and Home buttons at the same time. When the device turns off,
                release the Sleep/Wake and Home buttons.
3. While pressing and holding the Home button, reconnect the USB cable to the
       device. The device should turn on. Note: If you see the battery charge warning,
       let the device charge for at least ten minutes to ensure that the battery has some
       charge, and then start with step 2 again.
4. Continue holding the Home button until you see the "Connect to iTunes" screen.
       When this screen appears you can release the Home button:
5. If necessary, open iTunes. You should see the following "recovery mode" alert:
6. Use iTunes to restore the device.
If you don't see the "Connect to iTunes" screen, try these steps again. If you see the "Connect to iTunes" screen but the device does not appear in iTunes, see this article and its related links.
Note: When using recovery mode, you can only restore the device. All user content on the device will be erased, but if you had previously synced with iTunes on this computer, you can restore from a previous backup. See this article for more information.

*Port Scan* detected - Blocked by host

Hi all.
I'm having almost word for word the same issue as this person a couple of years ago: http://discussions.apple.com/message.jspa?messageID=8648363.
I am using Cyberduck (but have also used filezilla with the same results) and am trying to download and upload files to my website. My host has blocked my IP a number of times, and has told me that I'm making the server think that I'm port scanning. This is the error that they have given me:
+DENY xxx.xxx.xxx.xxx *in27m 23slfd – *Port Scan* detected from xxx.xxx.xxx.xxx. 11 hits in the last 263 seconds+
As per the suggestions in the other thread, I have scanned my computer and checked security etc. Everything appears to be fine. After installing LittleSnitch, I have discovered that my ftp client is attempting to connect to a bundle of different ports. This is a screenshot of what LittleSnitch showed: screenshot. It got up to about 80 different ports before I clicked "allow all" (at this stage, my host had whitelisted my IP to allow me to troubleshoot, but my IP is dynamic and has since changed, so I can no longer test like this).
On another forum, someone told me to connect using an ACTIVE connection - if I do this, I can download/upload a small amount of files (between 5-20) before it starts trying to connect to ports other than 21. At this stage I have to shut it down as I don't want to be blocked again.
Any ideas? I thought I had this sorted out, but it turned out my host had whitelisted me (I hadn't requested it at that stage), and now that I have a new IP address, I'm back to square one. This started happening about 5 days ago - I have been uploading and downloading files using Cyberduck for over 5 years now, with no issues. My computer hasn't changed recently, my internet connection hasn't changed recently, Cyberduck hasn't changed recently (although I did update it to the latest version this morning to try and fix the problem to no avail), I have changed hosts, but I have downloaded files since then without issue, it's only recently that things have changed.

Looks like I can't edit my original question...
The problem is still happening, I've been doing some testing to narrow it down...
+ it's not just my computer (have also tried from my mums PowerPC and my sisters iMac), although it could be a mac thing (I don't have a windows machine to test from, only windows running on a mac, though I will give that a shot later)
+ it's not my internet connection (although it could be my ISP - I tested at my sisters place, who uses the same ISP as me, am looking for another testing location that has a different ISP)
+ it's not my website (have tried uploading to a completely unrelated website with similar results)
+ it's not cyberduck (have tried with filezilla, similar results, also tried via terminal - I don't know how to upload files, but when I connected, it connected through a different port, a 5 digit number, can't remember what now).
Not too sure where to go from here...

YOUR APPLE COMPUTER HAS BEEN BLOCKED

Recently, there is a Mac system alert says that "your apple computer has been blocked". It appears every times when i use websites. Indeed, some strange ads websites show up suddenly while i am using websites. What's more, the websites always break down since the alert appears. What can i do?

You may have installed a variant of the "VSearch" ad-injection malware. Follow Apple Support's instructions to remove it.
If you have trouble following those instructions, see below.
Malware is always changing to get around the defenses against it. This procedure works as of now, as far as I know. It may not work in the future. Anyone finding this comment a few days or more after it was posted should look for a more recent discussion, or start a new one.
The VSearch malware tries to hide itself by varying the names of the files it installs. To remove it, you must first identify the naming pattern.
Triple-click the line below on this page to select it, then copy the text to the Clipboard by pressing the key combination command-C:
/Library/LaunchDaemons
In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
A folder named "LaunchDaemons" may open. Look inside it for two files with names of the form
          com.something.daemon.plist
and
           com.something.helper.plist
Here something is a variable string of characters, which can be different in each case. So far it has always been a string of letters without punctuation, such as "cloud," "dot," "highway," "submarine," or "trusteddownloads." Sometimes it's a meaningless string such as "e8dec5ae7fc75c28" rather than a word. Sometimes the string is "apple," and then you must be especially careful not to delete the wrong files, because many built-in OS X files have similar names.
If you find these files, leave the LaunchDaemons folder open, and open the following folder in the same way:
/Library/LaunchAgents
In this folder, there may be a file named
          com.something.agent.plist
where the string something is the same as before.
If you feel confident that you've identified the above files, back up all data, then drag just those three files—nothing else—to the Trash. You may be prompted for your administrator login password. Close the Finder windows and restart the computer.
Don't delete the "LaunchAgents" or "LaunchDaemons" folder or anything else inside either one.
The malware is now permanently inactivated, as long as you never reinstall it. You can stop here if you like, or you can remove two remaining components for the sake of completeness.
Open this folder:
/Library/Application Support
If it has a subfolder named just
           something
where something is the same string you saw before, drag that subfolder to the Trash and close the window.
Don't delete the "Application Support" folder or anything else inside it.
Finally, in this folder:
/System/Library/Frameworks
there may an item named exactly
            v.framework
It's actually a folder, though it has a different icon than usual. This item always has the above name; it doesn't vary. Drag it to the Trash and close the window.
Don't delete the "Frameworks" folder or anything else inside it.
If you didn't find the files or you're not sure about the identification, post what you found.
If in doubt, or if you have no backups, change nothing at all.
The trouble may have started when you downloaded and ran an application called "MPlayerX." That's the name of a legitimate free movie player, but the name is also used fraudulently to distribute VSearch. If there is an item with that name in the Applications folder, delete it, and if you wish, replace it with the genuine article from mplayerx.org.
This trojan is often found on illegal websites that traffic in pirated content such as movies. If you, or anyone else who uses the computer, visit such sites and follow prompts to install software, you can expect more of the same, and worse, to follow. Never install any software that you downloaded from a bittorrent, or that was downloaded by someone else from an unknown source.
In the Security & Privacy pane of System Preferences, select the General tab. The radio button marked Anywhere should not be selected. If it is, click the lock icon to unlock the settings, then select one of the other buttons. After that, don't ignore a warning that you are about to run or install an application from an unknown developer.
Then, still in System Preferences, open the App Store or Software Update pane and check the box marked
          Install system data files and security updates (OS X 10.10 or later)
or
          Download updates automatically (OS X 10.9 or earlier)
if it's not already checked.

Poor man's port scan blocker

working with cisco IOS on 3750's at the access level, Nexus 7K's at the core.
I need to find a cheap but relatively harmless way to block port scans. We have not typically had to do this, most people on the internal network behave themselves. But we have a programmer bent on proving she's an "ethical hacker" and frankly I haven't got time for this nonsense.
I would just shut down her physical port but she runs these 'tools' from a vm-server and there are other hosts running on the same physical NIC so I can't just shut off that port.
I was looking into CBAC but I need to be very careful how I craft the ACL so as not to cause legitimate traffic to cease. That would be an RPE. Has anyone seen a detailed write up on how to proceed? The training I took just sort of 'touched' on it...kind of like "here's this other feature" but didn't really delve deeply into specifics. I did a search on google and was overwhelmed. The first couple of articles I located, probably just by cooincidence, were written for folks already steeped in the spy vs. spy world and so were way over my KB threshold. As I said, I can't afford to make a mistake here.
Anyone have some tips on where I can get started on this? Thanks so much in advance.

Hi
Well there are several ways you can handle this.
but lets first make it the way it is supposed to be handled.
1) is she breaking any IT policy ? If yes then let HR deal with the offending programmer, just make sure that they have enough proof to swat the offender hard.
If the answer is no, no policy of the company is broken then frankly I doubt that it is your responsibility to fix the problem, wich in this case is that the IT policy is lagging behind what is desireable.
Lets ignore the above part and check on what you asked for.
First of all since the machine is a vm machine in an esx host you will have problems to halt traffic simply because not all traffic does leave the ESX host.
So what can you do ? Is the ip address static or dynamic ?
If it is a static ip address then you can easily write an ACL that allows what she is supposed to be able to do from that machine and then block the rest from that particular machine and then allow everything else.
Since you did not have an ACL from the beginning this should only impact her ability to scan.
If the 3750 software is quite new you can setup an ACL with a connection to an EEM and TCL script that IF she starts to scan you can block her address via adding a new acl or the switch sends you an email or anything you can imagine inbetween.
If the ipadress is DHCP then you can either choose to lock it down to a specific address in the dhcp scope or you can setup something that lets you know what it is and sets a scripted acl.
So what other things can you do ?
You could set a MAC address access-list and shut down the Mac address passing through the switch.
You can do alot of other things like poisoning the arp address table of the machine, and make things not work the way she wants it. duplicate ip addresses and mac addresses or maybe duplicate windows name.
But that sort of thing can backfire and to be honest, that does not sound like the doings of a person who are in charge of the network and so on..
I would go for the first alternative ie make sure that what she is doing is not ok according to policys, let her know that it is not ok and if she persists in her doings turn her over to the HR department.
Good luck

Websites blocked because of security settings I didn't set for Yahoo games

I've been playing Yahoo games for years. About 3 days ago, they failed to load. When I asked about it, I saw that lots of other people were having the same problem. So I waited. This morning I tried to get into one of the games and got: Application Blocked because of Security Settings". I didn't set any different security settings. Then something about expired jre?? Wassup?

hello, this dialog comes from the java plugin you've installed and is not related to firefox. please refer to the documentation about the issue provided by java/oracle: https://www.java.com/en/download/help/jcp_security.xml

This board and "Your post has been changed because invalid HTML.."

I have got warning messages when previewing and posting of...
"Your post has been changed because invalid HTML was found in the message body. The invalid HTML has been removed. Please review the message and submit the message when you are satisfied."
Why can't you just allow users to post "code" samples.
Here are examples on posting code on another site with forums..
http://www.dslreports.com/faq/1037
http://www.dslreports.com/forum/remark,8477196
Quick two quote(s) from that last URL
#1 A code block is very useful when you do not wish anything you type to be interpreted (or misinterpreted) within the code block itself. The format of the text is also exactly preserved, all spaces, and everything.
#2 Within a code block, special characters, > ' &
and so on, can be used without any interpretation
being done on them by the forum software or by the
viewers browser.
If it is possible to do that here, how does one do that?
Please and thank you.
If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button.
Solved!
Go to Solution.

Hi dslr595148,
That is certainly possible and has been implemented. When you are in the editor writing a post look above the window for this symbol.
Thanks for the suggestion!

GT70 Application has been blocked from accessing Graphics hardware

I have a GT70 with a NVIDIA GeForce GTX 675m, have Windows 8.1 on it. Last month I had an issue where the video card freaked out and started to throw blue screens at me, had it taken in they fixed it and reinstalled the drivers and cleaned out the inside of the laptop which had dust inside, I would love to do it quite frankly I have no idea what the insides of a laptop like this look like.
So after I got my laptop back I had drivers 344.75 installed on it, then went to watch a video on YouTube and all of a sudden the video freezes while the sound still played. Then in the lower right hand corner it said Display driver stopped responding and has recovered under it said, Display driver NVIDIA Windows Kernel Mode Driver, Version 344.75 stopped responding and has successfully recovered after that the small thing popped up saying Application FlashPlayerPlu has been blocked from accessing Graphics hardware over and over again I got so tired that I went to the customize option to make that thing disappear from popping up, but the error kept coming and coming so much that it created hundreds of warning errors in the Event Viewer. So the only thing I could do was restart my computer.
Figured that updating my graphics card to the latest driver would help, which is 347.52. But whenever I watched YouTube on Firefox it would do the same thing, it wasn't just the Flash Player plugin either it was other programs like VidCoder I haven't seen what other programs did it. It just feels so frustrating because I don't want to take this laptop into get repaired again to the local computer place. I think it might be a software issue since the computer seems to work fine when it's not using the NVIDIA GPU, I started watching YouTube using Google Chrome and not Firefox. I haven't really gamed on it in a while but now afraid to play games on it that it might break the video card or crash. Has anyone out there seen such a problem?
I've looked all over the Internet and people say that maybe the GPU is being overclocked but I don't even know what or how to search to see if it is. How can it be overclocked when using simple programs or websites like YouTube? I have also heard that most of these problems are cause of Windows 8.1 but can I even down grab back to regular Windows 8? I wish I had Windows 7 on this laptop but it came with Windows 8 and kept hearing that it's dangerous to downgrade the laptop to Windows 7.
Thanks if anyone can help out with this issue.

I am really hating Windows 8 & 8.1 all together. But I took it into the shop this past Monday to figure out maybe they can fix it. Since I still have the two month warranty with the shop I can take it in and won't have to continue paying more money. When I got it back they said something about the files or drivers were corrupt and they reinstalled them. Went home played Unturned on Steam for like 15 to 20 minutes, game froze like it did with No More Room in Hell. Giving me that same error Application unturned.exe has been blocked from accessing graphics hardware, over and over every three seconds. I shut down the laptop for the night and turned it on about an hour ago and the error message kept popping up like twice then finally stopped.
I went over to NVIDIA's forum a couple of days ago and someone with a GT70 and GTX 675m card is having almost the same issue as me which is crazy, then saw another person with a 675m saying that it's unstable that the GPU usage exceeds 2000% and freezes. Do you think that it might be some sort of update that is causing the cards to just mess up? It's strange that within a few weeks three people including myself have issues with the card acting strange. I haven't gone with factory restoring my laptop yet, been trying not to go down that road unless it's needed. Also I hear Windows 10 is coming out in the summer and I'm iffy about just upgrading hoping the problem will go away or is Windows 10 is just as dangerous as Windows 8.
I am also wondering if I was to downgrade to Windows 7 will it also erase my MSI factory recovery partition for Windows 8 on the drive?

I've been blocked because I'm port scanning?!

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