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How to setup a VLAN in Cisco ASA5510 for guest wireless access

I am running a /24 network in Active Directory with my ASA acting as gateway and firewall.  Standard interfaces (Ethernet 0/0 as outside, Ethernet 0/1 as inside)

As of now I have no VLans set up, but I need to setup wireless Internet access for guests...  I need directions on how to setup a Vlan with its on DHCP for these aguests...  I can then make sure that my APs can be pointed to the same VLAN...  I am not familiar with CLI, have generally used ASDM. I am currently running ASDM 6.3(1) on an ASA with version 8.3(1).

This is something I need to do quickly as we are expecting 20-40 "guests" shortly, and I don't want them to use our internal DHCP server addresses.

Thanks

Stephan

3 REPLIES

How to setup a VLAN in Cisco ASA5510 for guest wireless access

Hi Stephan,

You would have to create sub-interfaces on the ASA inside port to accomodate both the LAN as well as guest vlan but do keep in mind that it MIGHT involve a downtime and make sure you are CONSOLED into the ASA as you'd be making changes on the inside interface itself.

Check this document for Sub-interface creation on the ASA using CLI:

https://learningnetwork.cisco.com/thread/10502

After this follwoing tasks need to be completed:

- You'd have to enable NAT for the new VLAN

- Enable DHCP for this new vlan and both of this can be accomplished using ASDM

- Make the port on the switch connected to the ASA as Trunk

- Create this new vlan on the switch where the AP is connected

Hope it helps

Neeraj

How to setup a VLAN in Cisco ASA5510 for guest wireless access

Hi Stephan,

You may want to use one of the avilable ports on 5510 and create DMZ, unless you want to create a inside Vlan for guests.

AP can point to DMZ and AP also should be able to act as DHCP (if not ASA/DMZ can be your DHCP server for clients). Configure ASA to 'nat (DMZ,Outside)' and use public DNS servers for the guests.

hth

MS

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How to setup a VLAN in Cisco ASA5510 for guest wireless access

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