Nod32 v3: Software firewall made useless b/c all connections are running through v3?

Discussion in 'ESET NOD32 Antivirus' started by veri, Nov 22, 2007.

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  1. piranha

    piranha Registered Member

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  2. pete_21

    pete_21 Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Thanks Nodrog for your describing in post #189

    So if I understand it correctly, the firewall loses control over the applications?
    Is there a way to disable this feature in NOD32??
     
  3. Manny Carvalho

    Manny Carvalho Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    See post #11 at the start of this thread.
     
  4. pete_21

    pete_21 Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Thanks the answer. I've read it. But there is one more thing, I would like to make sure :)
    So the browser doesn't connect directly to the internet, but throug the proxy of NOD32. But does my firewall still protect the browser and all the other internet application??
     
  5. Woody777

    Woody777 Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    I think it might dependi ng on the firewall.. I further believe that if you have a decent HIPS that that might help.. Firewall experts can modify this if they wish.
     
  6. nmaynan

    nmaynan Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    It may not be a bug, but doing what you say in your original-picture-described-post does not stop applications from leaking information via the ekrn tunnel. (In fact, even when I shut down the Web Access and Email protection modules, I still had data leaks.)

    For example, even with ALL entries unchecked as you instructed, playing a RealPlayer file on my desktop will cause a NO PROMPT internet connection through ekrn despite the fact that RealPlayer has no allowed access in the Online Armor Firewall. Even more interesting, with NOD32 uninstalled, no connection by RealPlayer is even attempted. My firewall doesn't prompt and Realplayer never connects.

    When NOD32 is installed, the only fix I've been able to find (as has been already mentioned I believe) is to turn off the DNS client. Then the user gets prompted for port 53 for the specific application that wants access.

    Ignoring all security concerns, this is horrible for privacy. the user has no control over applications that phone home. Despite the "DNS Client fix" I'd never use NOD32 with this. Too bad, I've used NOD32 AV for years. I'll have to find a new AV when my 2.7 subscription is up.
     
  7. nmaynan

    nmaynan Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Intercepting loopback did not work for me (please see edit below). RealPlayer still connected out via 80 even with this feature of Online Armor active. The only thing that stopped RealPlayer in my tests was disabling the DNS Client.


    ***EDIT: Intercept Loopback in OA DOES catch this. I must amend my original post. You must restart your computer after selecting "Intercept Loopback" before it will start intercepting though (I didn't restart when I first tested it). So as long as your firewall can intercept loopback, this proxy issue shouldn't be a problem.
     
    Last edited: Mar 11, 2008
  8. Artur

    Artur Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Hi, All. I'm new here but read the forum a lot.

    Yes, I have the same problem

    Regards
     
    Last edited: Mar 11, 2008
  9. nmaynan

    nmaynan Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through


    Please look at my EDIT in the post above yours. Set yur OA to Intercept loopback and then set rules to intercept ports 1024-4999. then use endpoint restrictions to send only to following enpoints: 127.0.0.1/32.

    this will intercept connection requests and control the proxy behavior. post again if you need more help.
     
  10. Artur

    Artur Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Thanks Nmaynan. Problem solved

    Regards
     
  11. Hefaistos22

    Hefaistos22 Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    can i configure it somehow that it could work with Sygate Firewall??:(but i want that Nod can control web traffic!:(
     
  12. Marcos

    Marcos Eset Staff Account

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    It depends on the other firewall, some support local proxies.
     
  13. capatt

    capatt Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Can you be a bit more specific about the steps required to set this up? I have OA. Does the rule to intercept ports 1024-4999 with the noted endpoint restriction apply to ekrn.exe? Can you furnish a step-by-step? Sorry for the bother.
    Thanks
     
  14. HAN

    HAN Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    A known design shortcoming with the Sygate Firewall was that it did not support filtering of local proxies. Sygate had indicated that they were going to work on the issue but it never happened. And now, of course, the Sygate Firewall is no more... :( So no, there is no way for you to configure the Sygate Firewall using NOD32 v3 and have your normal firewall protection...
     
  15. Hefaistos22

    Hefaistos22 Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    but i dont mind outgoing connections,could i still use sygate as inbound protection?or is it tunneled too??:(
     
  16. HAN

    HAN Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    AFAIK, inbound protection should be ok. So yes, you could but I'm confused as to why... If all you are filtering is inbound, then you may as well roll back to the Windows Firewall. If you uninstall Sygate, you gain some things and lose little to nothing. Items such as no additional processes running, no RAM or hard drive overhead, etc...
     
  17. nish

    nish Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    I downgraded to v2 after all of the hassle with v3 proxy/tunnelling everything.

    Havent check up on this in a while. . Is all web traffic still getting sent through proxies on the latest version?
     
  18. MarkW

    MarkW Registered Member

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    Referring back to Post 131 on Dec 09, 2007 - and all the follow up, I need to revisit the issue of Online Armor Firewall v3 with NOD32 AV v3. I quote,

    I am a novice user and I need this broken down into layman's English. Please bear with me. I have XP SP3. My security setup consists of the paid/full versions of the following:
    1. NOD32 AV v3 (used blackspear's settings)
    2. Online Armor v3
    3. Malwarebytes
    4. Prevx2.

    All four have the most up to date patches and were installed on a virgin machine two days ago. As things stand today, I have two questions.
    1. Is NOD32 essentially circumventing OA, permitting all outbound traffic via IE7 (my browser)?
    2. Is there anything I can do with advanced settings of either NOD32 or OA to permit OA control of outbound traffic?

    Remember, plain and simple if you please. I am not an IT guy, just a regular dude trying to harden up his system.
     
  19. doktornotor

    doktornotor Registered Member

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    Well, can't imagine much more plain English instructions than "Just tick 'Intercept Loopback Interface' in OA". It doesn't work for you? Or you cannot find the option? Or... ?
     
  20. Statler

    Statler Registered Member

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    Hello Mark,

    no, NOD32 is not circumventing OA. It is acting as a local proxy for all web browsers, therefore the connection goes from IE to NOD32 to OA and then to the internet. The connection will use both Web Shields (from NOD32 and from OA). The drawback is that OA will not recognize that the connection is originally initiated by IE because it only sees NOD32 connecting. That way any OA firewall rules for IE will not trigger.

    Ticking the "Intercept Loopback Interface" in OA (Options -> Firewall) will OA enable to recognize the connection between IE and NOD32 and it can trigger any firewall rules for IE. It will still use both Web Shields.

    On the other hand you may disable the proxy functions of NOD32 using the instructions here and IE will connect directly to OA without using NOD32 as a proxy. This way firewall rules will be triggered, but only OA's Web Shield will be used. ;)
     
  21. meschubert

    meschubert Registered Member

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    Great clear response from Statler. I know that I appreciated it.
     
  22. Einsturzende

    Einsturzende Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    ...On the contrary, Local proxy should not be filtered, 3rd. party FW should not be aware of local proxy to be able to filter pure application request and not inercepted NOD32 request, it should filter at highest level possible and not at lower...
     
  23. HAN

    HAN Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    I don't exactly understand what you're trying to say, but if one wishes to use a software firewall to control outbound traffic, and anything on the PC is using a local proxy to route any of the traffic, the firewall MUST examine the local proxy in order to report anything not already approved. Anything less means things can connect to the web completely unknown to the user.

    Of course, many users, (especially business users) do not use outbound, software firewalls. So, the importance of outbound control (and the desire to have it) can vary a great deal. (For example, at work, we don't filter outbound traffic at all. But at home, I would not be without it.)
     
  24. Einsturzende

    Einsturzende Registered Member

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    Re: Nod32 v3: Software firewall made useless b/c all connections are running through

    Application request - NOD32 local proxy - firewall - (in this case firewall will filter NOD32 traffic)
    Application request - firewall - NOD32 local proxy - (in this case firewall will catch application requests, not NOD32 local proxys "reused" request)
     
  25. HAN

    HAN Registered Member

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    I recently started using the Comodo free firewall and could not find a simple guide to help me set up filtering for the NOD32 proxy. After asking over at the Comodo forums, I received the following answer (marked in the photos) which seems to do the job.

    (Note that these settings can make the firewall have more pop-ups than normal. If you want to avoid the pop-ups, I'd recommend running a new CFP firewall setup in "Training Mode" for a while before switching to what is in the photos.)
     

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