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Presuming you do not have any commonly 'tagged' ports for these VLANS then the others should not pass any packets to the .40 VLAN?
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I&quot;m not real good on the tagged versus untagged but I can tell you that someone in the .40 VLAN can access devices (servers) in the .10 VLAN. &nbsp;I was hoping to be able to utilize ACLs but wasn't able to assign an access-group to the VLANs. &nbsp;
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I hope this worked ok! Thanks for the grade.<br />
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Regards
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We've created 4 VLANs on a Cisco 2821 router. &nbsp;The VLANs are created off GE0/0 using GE0/0.10, GE0/0.20, GE0/0.30 and GE0/0.40. &nbsp;We would like to deny access of the .40 VLAN to all other VLANs. &nbsp;How do we go about accomplishing this?
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We've created 4 VLANs on a Cisco 2821 router.  The VLANs are created off GE0/0 using GE0/0.10, GE0/0.20, GE0/0.30 and GE0/0.40.  We would like to deny access of the .40 VLAN to all other VLANs.  How do we go about accomplishing this?

Presuming you do not have any commonly &#39;tagged&#39; ports for these VLANS then the others should not pass any packets to the .40 VLAN?

I&quot;m not real good on the tagged versus untagged but I can tell you that someone in the .40 VLAN can access devices (servers) in the .10 VLAN.  I was hoping to be able to utilize ACLs but wasn&#39;t able to assign an access-group to the VLANs.  

I hope this worked ok! Thanks for the grade.

Regards

Control VLAN access

We&#39;ve created 4 VLANs on a Cisco 2821 router.  The VLANs are created off GE0/0 using GE0/0.10, GE0/0.20, GE0/0.30 and GE0/0.40.  We would like to deny access of the .40 VLAN to all other VLANs.  How do we go about accomplishing this?

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.