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Stopping Messenger Service Spam

abruso
Level 1
Level 1

‎04-11-2003 08:46 AM - edited ‎03-09-2019 02:52 AM

I was under the impression that to stop spammers from using our networks Messenger Service, all I had to do was block the UDP NetBIOS traffic and it should take care of it. I have done that, and I am still getting the messenger pop-up windows. Are there any other ports that I should block? What are the exact ports I should be blocking?

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mostiguy
Level 6
Level 6

‎04-11-2003 09:13 AM

You should be blocking everything inbound by default. That is the default setup of the pix. Post your config, but delete the password lines

Matt

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abruso
Level 1
Level 1
In response to mostiguy

‎04-11-2003 09:29 AM

Well, this is actually a 2600 router. We don't have a PIX but I couldn't find any other place on the forums to ask this question for a router.

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mostiguy
Level 6
Level 6
In response to abruso

‎04-11-2003 10:21 AM

Investigate into using CBAC on the router as a firewall solution. Is the router under an support contract on which you can upgrade the image to one that support cbac?

Matt

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