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Webcast-Catalyst9k
New Member

vlans and netbios traffic

do vlans block ports 135-139 by default, or do they sutomatically forward packets on those ports?

Thanks.

1 REPLY
New Member

Re: vlans and netbios traffic

vlans are purely a layer 2 function, they have no knowledge of TCP/UDP ports (layer 4), hence cannot inspect/influence frames based on netbios ports.

Other features such as ACL'S (access control lists) are used to block tfaffic based on port numbers.

Cheers,

Jeremy

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