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Zonealarm Blocking Outbound Legitimate Traffic

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5 replies to this topic

#1 sandbox


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Posted 09 July 2008 - 11:29 AM

I have used the free ZoneAlarm basic firewall for years and never observed this behavior -- it is blocking outbound legitimate traffic. For example, Mozilla Firefox access to the Internet is set to "allow" under Program Control. Still, I get the ZoneAlarm Security Alert that says "the firewall has blocked Internet access to [whatever site] [IP address] (HTTP) from your computer [TCP Flags: S]". These are legitimate sites like cnn.com. When I change the "Internet Zone Security" level from High to Medium, then my computer is allowed access to the Internet. But I don't want ZoneAlarm to be on Medium, I want it on High. Like I said, I've never seen this before and I don't think I have a virus (just scanned with McAfee). Can anyone help? I'm thinking there may be a simple solution but I just haven't found it. I'm running the latest version, 7.0.473.000.

Edited by sandbox, 09 July 2008 - 11:32 AM.

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#2 Mariana_X


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Posted 09 July 2008 - 12:57 PM

Hello Everyone!!

I came in to ask for help but apparently I have got a very similar problem than Sandbox...

I Installed Zone Alarm yesterday night since my McAfee was about to expire and I wanted to try something new, Zone Alarm was recommended to me and I used to have it installed in my computer at work and never gave me any problems.

So I installed yesterday and It worked beautifully!! Didn't give me any problems at all and I was very happy!!

Then, I turned off the computer and headed to bed, and now this morning, everything seems to be working fine except I cannot open Internet Explorer nor Firefox!!

I know I have internet because I also have Lingo Phone service and this does work, everything else in the computer has been working fine except anything to do with internet, (I even tried using MSN and it wont start). And I don't get any alert from Zone Alarm.. just the same ol' "page cannot be found"

I checked the permissions just like Sandbox said and these programs are both allowed... My security in internet is raised to "High" as well.. but will it hurt my computer if I change to medium?

I also noticed:

vsmon.exe running

I know Vsmon.exe is related to Zone Alarm but can't find more info about it (the computer I'm using is ridiculously SLOW, Every time I want to open new page It gets stuck for some minutes... I'm sorry :thumbsup: )

Anyways thank you so very much!!

(I'm sorry, Relatively new user... I dont know if it was ok for me to intrude in Sandbox post... is this ok or should I write new one? I just figured is very similar problem, please let me now)

#3 desmondkiu


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Posted 09 July 2008 - 03:00 PM

i am also experiencing the same problem as sandbox
one more thing i noticed is that this only happened after an automatic update on windows xp
after the update finished installing a window popped up to say something on security patch
right after that none of my programs can access the internet under high internet zone setting
only after changing it to medium then can i access the internet

#4 frankp316


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Posted 09 July 2008 - 06:03 PM

Check out this link.


#5 sandbox

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Posted 11 July 2008 - 07:23 AM

frankp316 - thanks for the link, and thanks everyone for your replies.

Everyone's probably heard, but in case you haven't, ZoneAlarm put out a new version on their website. Installing that will take care of the problem caused by the recent Windows update.


#6 nigglesnush85


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Posted 11 July 2008 - 07:30 AM

Zone alarm has patched the problem...



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