I have an old notebook with WIN XP and avast 2015.10.4.2233.
The notebook is connected via wifi to a router (alcatel y900) for mobile connection to the Internet.
It is possible to activate/deactivate the connection to the Internet and setting the router parameters through some web management pages on the router (accessible via http://192.168.1.1).
The problem is that when the avast web shield is activated, you can not see the active content of the web management pages of the router : the page is loaded with no warning issued but is blank!
As far as I can understand, the router’s web pages (html 5.0) contains some scripting content based on JS and “modernizr” (a js library which is designed to detect HTML5 and CSS3 features).
When I stop avast web shield, immediately all works fine.
I have tried to make esclusions of the urls involved with the router management in the Active protection - web shied section and in the scripting section too: http://192.168.1.1/* http://192.168.1.1/JS/* http://192.168.1.1/JS/LIBS/*
but they don’t work! (…and no warning is issued).
Any one can help me understand what is going wrong and why the avast web shield is blocking these contents?
Thank you in advance
Eddy, you have just replied this to me , but this is not at at all a solution because it does not help me in understanding the problem.
For the moment, as i have just said, I do not want to upgrade the version.
So thank you for your patience and precious effort but, if you do not have any kind of technical help to supply, please refrain from reply and leave that some else try to understand the problem.
The blank page has happened before and avast has changed things to make it work correctly.
It seems you are reluctant to solve the problem which is ofcourse your choice.
The blank page happens ONLY when the avast web shied is on, when the avast web shied is off the page work correctly.
I want to understand and solve the problem but i do NOT WANT to upgrade the program.
Once again let some one else more experienced try to help
Depending on what browser you have try adding the URL of the Modem/Router to the Proxy Exception list as below:
For Internet Explorer:
Adding an Exception in Internet Explorer
[b]Go to Tools >> Internet Options.
Click on the Connections tab.
Click on LAN settings in the Local Area Network (LAN) settings section.
Click on the Advanced button in the Proxy Server section.
Add your exceptions in the Exceptions section, separated by semi-colon[/b]
For Firefox:
Adding an Exception in Firefox
[b][b]Go to Tools >> Options.
Click on Advanced.
Select the Network tab.
Click on the Settings button in the Connection section.
Add your exceptions to the No Proxy for field, each separated by a comma.
I have only firefox installed on the notebook and there is no proxy betwen the pc and the wifi router…
I am not sure to undestand why is needed to set such exception if no proxy is used.
Moreover, as I explained, when the web-shield is off all works fine, so the actual configuration of the browser (as-is) should be correct.
Thank you again
I can not give you a specific reason as to why it must be done. But that is what I had to do
to get access to my router as well and I also do not use a Proxy. I run XP Pro SP3 with the
latest Avast Free Antivirus installed. I think it has something to do with how DNS works. Not sure
but try what I said to do and see if you can access the Router / Modem home page properly.
I am almost certain this will solve your issue. See screen shot for how my Firefox is set up:
As far as iI know, proxy esclusions are effective only when a proxy is used, exactly to bypass the proxy itself (for instance it is useless passing through the proxy to go to a local url like localhost or 127.0.0.1 or in general for a intranet address).
That’s way the esclusions are greyed in the connection settings when the setting “No proxy” is selected.
Furthermore, as I said, when the avast web-shield is off all work fine without any esclusion in the browser connection setting…that’s why I think there is something wrong whith avast.
When I installed and started to use the new router (alcatel y900) all went fine with avast , then suddenly started the mis-behaviour…
…I am starting to think that some virus definition update (same program version) that I have performed after the router installation has inserted something that is causing the mis-behaviour…
Anyway thank you for your patience and advice , I will try it (maybe it works :-)) as soon as I got home.
Cheers
What about making a packet capture (or fiddler capture) of the traffic with and without webshield? If you’d have this, send it to me and we migh come up with some explanations.
Thank you for your attention!
I have also tryed your suggestion to turn off script scanning but it does not change nothing…
Your suggestion is too technical for me… could you explain me how to perform this “packet capture” and the tool to utilize?
BTW is there any avast log in which we can find some others useful information?
Thank you again
lukor have offered to help in analyzing the issue so I’d rather wait for their support about the correct way in performing the packet capture and the tool to adopt (as I said I am not too into developing stuffs).
I have taken a look on the site you suggested but seems that their tool is not the best as far as winXP is concerned:
“The current version of Wireshark should support any version of Windows that is still within its
extended support lifetime. At the time of writing this includes Windows 10, 8, 7, Vista, Server 2016,
Server 2012 R2, Server 2012, Server 2008 R2, and Server 2008.”
