Author Topic: Web shield blocking access to 192.168.1.100, even with exclusions  (Read 6178 times)

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joe@quastmedia.com

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Greetings,

I am using a Windows 10 laptop to try and configure this device:
https://www.synaccess-net.com/np-02b/

The way it is supposed to work is the device comes preloaded as
192.168.1.100
255.255.0.0
192.168.1.1

and you connect to it directly with a crossover cable and set your computer to:
192.168.1.150 (or whatever host portion you want)
255.255.0.0
192.168.1.1

Typing 192.168.1.100 loads a web interface to control the device.

On my laptop, this only works with Avast Web Shield disabled. 
I get the login prompt for the device, but the web interface doesn't load.

I added the following exclusions to both the general software settings and the web shield settings
http://192.168.1.100*
https://192.168.1.100*

yet I still have the same issue.  The web interface won't load.

Any other thoughts what I can try?

Offline Eddy

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #1 on: May 25, 2017, 05:46:17 PM »
What exact version of avast ?
What exact OS/SP ?
Any other security (related) software installed ? (or was there)
Already performed a repair of avast ?
Already performed a clean installation of avast ?

joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #2 on: May 25, 2017, 08:02:26 PM »
- It is Avast Free 17.4.2294 (build 17.4.3482.0).  Virus definitions 170525-2
- Windows 10 Home Version 1607 Build 14393.1198
- It's always been only Avast.  Even Windows Firewall is disabled

Do you really think a repair or fresh install of Avast could resolve this particular issue?  Or was your reply a canned reply?    :)

Offline Eddy

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #3 on: May 25, 2017, 08:31:17 PM »
A repair or true clean install can solve the problem.

Why do you have the windows firewall disabled ?
Doe you have a hardware or other software firewall installed ?

joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #4 on: May 25, 2017, 08:41:57 PM »
A repair or true clean install can solve the problem.

Why do you have the windows firewall disabled ?
Doe you have a hardware or other software firewall installed ?
Ok I will try a repair and then a clean install if the repair doesn't work.
Any further suggestions if neither work?

Windows Firewall was blocking something unrelated to this so I disabled it indefinitely.
No there's no other security software on this computer and there never was. 
Hardware-wise, this current setup (direct crossover cable connection) wouldn't even go through a physical firewall even if we had one (which we don't).

Thank you!

Offline mchain

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #5 on: May 25, 2017, 09:29:13 PM »
Well, since Avast Free doesn't have a firewall, your only software firewall would be Windows Firewall.  The other firewall you would have would be the hardware firewall in your router. 

So you are running a hardware firewall but no software firewall.

What was Windows firewall blocking?
Windows 10 Home 64-bit 20H2 Avast Premier Security version 21.3.2459 (build 21.3.6164.652) UI version 1.0.612.

joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #6 on: May 25, 2017, 09:49:10 PM »
Well, since Avast Free doesn't have a firewall, your only software firewall would be Windows Firewall.  The other firewall you would have would be the hardware firewall in your router. 

So you are running a hardware firewall but no software firewall.

What was Windows firewall blocking?
No I am not running ANY firewall, hardware or software.
I was just stating that when I am plugged directly into this device with a crossover cable, that the computer isn't even on a network.  So there's no firewall at all.

Windows firewall was blocking this computer serving out something completely unrelated to this topic.  I could turn it back on, but I don't think that would help with my current Avast problem??

Offline mchain

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #7 on: May 25, 2017, 09:58:43 PM »
I've to comment this is not the usual setup.  Might be why I assumed wrongly.

Any particular reason for running only with a crossover cable?
Windows 10 Home 64-bit 20H2 Avast Premier Security version 21.3.2459 (build 21.3.6164.652) UI version 1.0.612.

joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #8 on: May 25, 2017, 10:09:51 PM »
I've to comment this is not the usual setup.  Might be why I assumed wrongly.
I'm afraid I am not sure what you mean.  Are you asking me a question here?

Quote
Any particular reason for running only with a crossover cable?
That is what this device requires to communicate.  That is actually pretty normal from an IT perspective when connecting two devices directly with a network cable; needing a crossover cable is common.
But the physical communication between my laptop and the device isn't the issue.  They see each other just fine.
The issue is that I cannot get to the web interface of the device unless I turn off the Avast Web Shield.

Offline mchain

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #9 on: May 25, 2017, 10:24:46 PM »
Got it.

Eddy's advice to either Repair the avast installation or do a clean install would be recommended.  Reason for that is because WebShield needed an Avast EmUpdate.exe run to resolve exactly the same symptoms/issues you are reporting earlier in the month, and a repair and/or clean install is the fastest way to resolve.
Windows 10 Home 64-bit 20H2 Avast Premier Security version 21.3.2459 (build 21.3.6164.652) UI version 1.0.612.

Offline bob3160

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #10 on: May 25, 2017, 10:26:45 PM »

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn't fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf
Free avast! Security Seminar: http://bit.ly/2N1eaR2  -  Important: http://www.organdonor.gov/ -- My Web Site: http://bob3160.strikingly.com/ - Win 11 Pro v21H2 64bit, 16 Gig Ram, 1TB SSD, Avast One 21.11, How to Successfully Install Avast http://goo.gl/VLXdeRepair & Clean Install https://goo.gl/t7aJGq -- My Online Activity https://bit.ly/BobGInternet

joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #11 on: May 25, 2017, 10:30:27 PM »

Eddy's advice to either Repair the avast installation or do a clean install would be recommended.  Reason for that is because WebShield needed an Avast EmUpdate.exe run to resolve exactly the same symptoms/issues you are reporting earlier in the month, and a repair and/or clean install is the fastest way to resolve.

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn't fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf



Thanks, guys!  A repair didn't work.  I will try the clean install as instructed and let you know if that does the trick.

Offline Eddy

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #12 on: May 26, 2017, 12:18:36 AM »
Quote
No I am not running ANY firewall, hardware or software.
Why installing avast (or any other av for that matter), and at the same time putting your system at risk ?
That is like putting locks on your front door and leaving the back door and all windows open.
Quote
That is actually pretty normal from an IT perspective when connecting two devices directly with a network cable; needing a crossover cable is common.
Connecting two devices with a x-over cable is not common and not normal anymore for many years.

Offline bob3160

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #13 on: May 26, 2017, 10:36:12 PM »
If arguing the point would only solve it.  :(
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joe@quastmedia.com

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Re: Web shield blocking access to 192.168.1.100, even with exclusions
« Reply #14 on: June 14, 2017, 06:06:32 PM »
@eddy

I appreciate you trying to help, but I've been doing IT for 17+ years, so I don't need a lecture on the pros of using a Firewall :-)

Regardless of how common crossover cables are, it's what the manufacturer says we need, so I am using it.
The type of cable I am using is irrelevant; because as I previously stated, as soon as I turn off the Avast Web Shield, the problems all go away.