My ZoneAlarm keeps giving me this pop up

Question

The firewall has block access attempt from in-addr.arpa. (TCP 3420-22...

Sorry, i can't remember everything it says but you should know if you saw it before.

What is it and how do you prevent it from even trying to access your PC?

Answer 1

Zone Alarm is merely warning you that it is doing what it is supposed to do, block unwanted access from unauthorised users who will try to exploit  and compromise your security.

You can quite safely check the 'don't show this message again' as ZoneAlarm will continue to block unauthorised access attempts.

The usual cause is your ports being probed, along with thousands of other users in the hope that malware can be injected, so you are pretty safe with ZA blocking it.

Answer 2

Is there more than one person on your network?

Do you have wireless internet?  If so make sure your router is password enabled.

Someone could be attempting to "steal" your internet access.

★ Good Luck.  If you need any additional help with this, or anything else, feel free to Email me directly via my profile page.

Answer 3

It means ZoneAlarm is doing its job.

It's supposed to block outsiders from trying to get at your computer. That is what happened.  They were not specifically after you, there were after anyone who might be vulnerable (without a firewall) and exploitable.

You can turn off the notifications (I do).  After a while they are annoying because they happen a lot.

Answer 4

http://whois.domaintools.com/10.150.3.17

THIS IS WHAT I CAME UP WITH ....ZONE IS DOING ITS JOB ... NOT TO WORRY I HAVE ZONE PRO IM UP TO 4000  BLOCKED INTRUSIONS IN A COUPLE MONTHS ...JUST UNCHECK POP UP WHEN IT COMES UP ......