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alerts za on 49394

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#1 nonolefou


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Posted 21 January 2014 - 03:03 PM


Since twenty minutes, my za (free) stops a out con, on port 49394, I have an alert every 7 seconds +/-,


what could I do?


I am with my parent, I have music videos of my friends, but since I played them, alerts....


I cant change config, pass, etc of livebox ...


I block only this port?


edit : what logs exist in windows to have a deny of all, except essentials? or commands?

Edited by nonolefou, 22 January 2014 - 08:03 AM.

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#2 quietman7


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Posted 24 January 2014 - 03:00 PM

A firewall controls network traffic and serves two basics purposes:
  • Prevent incoming communications that you did not request from entering your computer;
  • Monitor what programs on your computer are allowed to communicate out.
The firewall does this by enforcing an access control policy to permit or block (allow or deny) inbound and outbound traffice. Thus, the firewall acts as a central gateway for such traffic by denying illegitimate transfers and facilitatint access which is deemed legitimate. The goal of the firewall is to prevent remote computers from accessing yours and provide notification of any unrequested traffic that was blocked along with the IP address. keep in mind however, that a firewall is not a panacea to solve all of your security problems. If you will open ports through your firewall to allow access to an infected machine, then the firewall is no longer relevant.

If your firewall provides an alert which indicates it has blocked access to a port or detected an intrusion attempt that does not necessarily mean your system has been compromised. These alert messages are a response to unrequested traffic from remote computers (an external host) to access a port on your computer. Alerts are often classified by the network port they arrive on, and they allow the firewall to notify you in various ways about possible penetration and intrusion attempts on your computer. Even if the port is open, the alert message indicates that your firewall has blocked the attempt to access it.It is not unusual for firewalls, IP blocking software (i.e. PeerBlock) and some anti-virus programs to provide numerous alerts regarding probing and intrustion attempts to access your computer. Botnets and Zombie computers scour the net, randomly scanning a block of IP addresses, searching for vulnerable ports - commonly probed ports and make repeated attempts to access them.

Hackers use "port scanning", a popular reconnaissance technique, to search for vulnerable computers with open ports using IP addresses or a group of random IP address ranges so they can break in and install malicious programs. Your security software is doing its job by blocking this kind of traffic and alerting you about these intrusion attempts. For more information about Port Scanning, please refer to Port Scanning Basic Techniques.

However, not all unrequested traffic is malevolent. Even your ISP will send out regular checks to see if your computer is still there, so you may need to investigate an attempted intrusion. If your computer is sending out large amounts of data, that can indicate that your system may have a Trojan.

If the alerts become too annoying, you should be able to go into your firewall/anti-virus settings and lower them or turn them off (Hide notification messages).
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#3 nonolefou

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Posted 26 January 2014 - 07:58 AM



thanks for answering .


at all, my zonelarm stopped about 1800 attempts ports out...each every ip local and a lot of ports.


so, I made a "white pc", on my principal (the most powerful, only games) without co internet.


my other is perhaps still vulnerable (maybe) but for youtube, surf, etc, I need it...


fot the portable pc connected to the net :

like a beginner, I tried to deny all except the necessary..


actually, e.g in skype.com, I can't validate a form to change a pass , I click but it does nothing....


can you help me to fix it?


on the fix computer, It's solved.


but on portable, to be sure not to rehave same problems of scanning ports from intrudes, what firewall do you recommand?


I use a pro version of bitdefender. 


sorry, a alot a questions, but I would be quiet :)




(sorry, I'm French)

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