Deploying Secure 802 11 Wireless Networks with Microsoft Windows

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Click the Properties tab wen ready.

Roaming Technologies - Cisco Meraki

Select Use a certificate on this computer and check Use simple certificate validation. This Group Policy should now deploy your I tried that but the 2nd Wireless Policy does not apply. Hi Daniel, Yes this is possible and I have done this before. It could be something like permissions or the machine in the wrong GPO that are easily overlooked. Thanks Robin. I have allready checked with gpresult and it says that the policy was applied succesfully. Hi Daniel, have you tried disabling the first policy to see if there was some kind of conflict between them?

But that was not the case. At the end I had to add all existing Wireless Networks and the new one to the new policy and gave it a higher priority. This means for me that it is not possible to push more than one Wireless Policy to the Clients. Do GPO pushed wireless profiles take highest priority by default? Great article. Which one should I select? You need to also have a Windows Certificate Services set up that issues certificates to the computers in the AD domain for this to work.

That's it! Now your server is prepared for eduroam IdP operation! You can add users to your "database" by amending the "users" file; if you do, you will unfortunately have to restart FreeRADIUS so that it picks up the change. By default, the "detail" modules log every attribute as it was received. This is often considered harmful. You can mark every user with a VLAN where he should be put into. This is done by assigning "reply items" to the user in the authentication database.

In our flat file example, reply attributes are in a separate line, indented by a tab. To put our two example users into VLANs 17 and 42, respectively, the entries would look like the following:. Using a flat file as in our example scales very poorly. If you wish to use SQL, changing our example configuration is very easy: simply replace the "files" line in eduroam-inner-tunnel:authorize with "sql".

The schema which FreeRADIUS uses to store user information is similarly structured to the "users" file: a table radcheck holds the check items i.

Challenges with Roaming

It is at the discretion of eduroam IdPs whether they want to. Configuring any one of the three choices is done with only a few lines of configuration. If you want to mandate the use of anonymous outer identities, the recommended way is using the identity " realm" i. You can enforce that only this outer User-Name is allowed to proceed to EAP authentication by adding the following to the authenticate section:. If you want to forbid usage of anonymous outer identities, you can do this by comparing the two presented User-Name attributes of the outer and inner authentication.

You can only do this in the eduroam-inner-tunnel virtual server obviously, since only that server has access to the inner identity. Put the following into the "authenticate" section of eduroam-inner-tunnel:. It is possible to use OpenSSL directly but instructions to do so are outside the scope of this document. Within the Radiator distribution there are also simple scripts available to create certificates for testing purposes.

Wireless Access Deployment

In the following examples there are two kinds of EAP that are configured at "institution":. In this example there is a client definition for The "secret" is a series of at best 16 characters that are used to encrypt the credentials sent in the RADIUS-request.

General overview

It is of course recommended to create a secret that cannot be guessed easily, otherwise the RADIUS-message can be decrypted. This is not an issue with EAP-authentication using However, with regular credentials like those used with Web-based redirection authentication this is sensitive information that might be captured, therefore a reasonably complex secret and an SSL tunnel is recommended. The Identifier in the Client-definition can be used later on in the Radiator configuration to filter a specific request. If more then one Client is to use this same secret and identifier definition, the IdenticalClients statement can be used.

If there are many clients with different IP-addresses, there is also the possibility for a "catch-all" client. This is the default client that is used after all other client definitions didn't match. Define this client as:. Handler-clauses are more potent than Realm clauses in terms of filtering anything besides realms, and are therefore the preferred method.

A realm is the part behind a username to indicate the origin of a user. With RADIUS, the username is usually separated from the realm with a " " so the complete username looks like a regular e-mail address. In this example a proxy-configuration is shown. First we have a Handler that matches on any request, as long as it does not come from the client with the identifier "Proxy-Identifier". This is to prevent a proxy loop. When a request comes from a proxy-server, it should never be forwarded back to that proxy-server.

Another important part is the hostname to which the request should be forwarded.

Multiple hostnames can be defined here for redundancy reasons: if the first host does not respond within three seconds, the second one is tried instead. The choice is more or less a personal preference of the RADIUS administrator, but be aware that the hostnames are only looked up once at the Radiator re start. If the lookup fails, the Host cannot be used until the next restart. This can represent a problem at a power outage, where for instance the DNS server is not yet available even though Radiator is. These attributes can be used to define a VLAN that will be assigned to users that are authenticated using this Handler.

With StripFromReply, the attributes that came from the proxy-server are stripped first to prevent malicious VLAN-assignments, afterwards the attributes are added with the proper values for the local network design.

Deploy Password-Based 802.1X Authenticated Wireless Access

In this case, VLAN is used for guests. Rolling out such certificates is a sometimes daunting administrative process, and is out of the scope of this document. The remainder of this section assumes that client certificates have been issued to the users already. In this example the AuthBy-definition is outside the Handler, and is referred to using the Identifier. This is useful if the AuthBy-definition is reused in another Handler, for instance.

The definitions that follow determine what to do with the EAP-request. Here regular password authentication is not desired, just certificates. Next, the certificate files are configured and the secret that secures the private-key file can be provided. If there is no secret for the private key, this can be omitted. The next part defines in what size blocks the EAP-messages should be fragmented. With This can be done at the Access-Point and the Client end so that there is no need to transfer the WEP-key in plain text over the air.

The Handler above shows the referral to the AuthBy-definition and some filtering mechanisms to filter out the proper requests. If more things need to be filtered on, they can be added to this handler, as follows:. For Accounting purposes, a new handler should be defined in this case, that filters on:. These two mechanisms look the same in that they both set up a TLS tunnel on which the credentials can be transported. They vary in the supported password encryption schemes.

Windows Server does not install IAS in the default installation. You must install the IAS separately, as follows:. You can specify different shared secrets for accounting if you wish:. For each access point and upstream proxy i. By default, users configured in the Windows Domain are not able to use their Windows Domain username and password to authenticate against IAS. For eduroam, this should be enabled in the Domain to allow access to Remote Access Permission.

This can be done using the User Management interface or the Domain Manager interface with the following policy:. Authentication methods are configured in Remote Access Policies under the Profile settings. The most useful information can be extracted from the Event viewer: But you can also obtain information from the log files:. All national roaming authentication traffic was aggregated into a national proxy server; all international roaming traffic was aggregated into a set of international proxy servers.

How to Configuration NPS Network Policies 802 1X Wireless