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Internet for Guests

Posted on 2014-02-02
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Last Modified: 2014-03-02
Hello Experts,

We have a Cisco Switch 3750G configured with 10 L3 VLANS. I am going to introduce Internet ADSL Router for guests only.

I have 5 AP distributed. The AP's will have 2 SSID  Guest and Corporate).

What would be the best way to setup network for guests to access internet only, while isolating our internal network subnet?
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Question by:cciedreamer
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dinkytoy101 earned 500 total points
ID: 39827701
Couple of possible options:

1. If only the only thing to guest -> internet then make them all the same layer 2 vlan and the default gateaway on the ADSL router. The 3750 is just passing them through so no access to the rest of the network. Quick and easy.

2. Not sure if the 3750 supports it but you could create a Guest VRF and route their traffic separately. More complex but scalable solution.

Not sure how you are handling any firewall/security bits though.
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Expert Comment

by:Robert Sutton Jr
ID: 39827703
You can probably get away with using web authentication for the guest users and EAP for those on the Internal wlan. There are alot of different ways to achieve the same goal. Below you will find two examples listed but ultimately it comes down to your needs and your equipment available and or its capabilities. I hope this helps.

http://www.cisco.com/en/US/docs/wireless/technology/guest_access/technical/reference/4.1/GAccess_41.html


http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a008070ba8f.shtml
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by:cciedreamer
ID: 39828792
Thank you experts for the response.

From the above comments I have got 2 options

Option 1 ( no money involved) : Create a Vlan on the Switch without layer 3 ip addressing.
and Connect the router to this vlan. Then configure AP's SSID be in this vlan. The client will get the DHCP IP address from the router and it will be there defaul gateway

Option 2 ( money involved): This could be achieved by getting WLC. which is currently not our requirement. But I would be interested to know how much it can cost me to use for other customers lets say they have AP's more than 100.

Thanks
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Author Closing Comment

by:cciedreamer
ID: 39898248
I am going with Option 1
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