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UTM is forwarding NetBIOS?

Alexander Busch

Hey all,

I need an advice for pointing me in the right direction.
I discovered some NetBIOS packets in 2 of our local networks. These seems to be forwarded by our UTM. Because of the name I discovered the source of these. It's an NAS device in a foreign network. This network and ours are connected through a RED Tunnel. 

But why is UTM forwarding these? And more important, how to stop that? I tried firewall rules, but that didn't worked.

Best regards

Alex



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  • FormerMember
    0 FormerMember

    Hi ,

    Thanks for reaching out to the Community! 

    Can you show us the firewall rule that you configured to block NetBIOS? 

    I would suggest you try to configure the rule to block NetBIOS to the interface's broadcast address and check if that helps.

    Thanks, 

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  • FormerMember
    0 FormerMember

    Hi ,

    Thanks for reaching out to the Community! 

    Can you show us the firewall rule that you configured to block NetBIOS? 

    I would suggest you try to configure the rule to block NetBIOS to the interface's broadcast address and check if that helps.

    Thanks, 

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