Proxy RADIUS packets

This virtual server replaces the old pre-proxy and post-proxy sections that were in v3.

It can be called from another virtual server via the call keyword:

subrequest {
  request := parent.request
  call proxy {
  }
}

For server pools with load-balancing, fail-over, etc., you can just use the load-balance and redundant keywords. Those sections should then include multiple radius modules, one for each home server. See mods-available/home_server_pool for an example of how to convert a v3 home_server and home_server_pool configuration to v4.

See also the proxy upgrade documentation for more examples of upgrading from v3 to v4: proxy

server proxy {
	namespace = radius

Authentication

Process Access-Request packets and responses.

Receive the Access-Request from the parent

This section replaces pre-proxy. It receives an Access-Request from the parent, and uses the radius module to proxy it.

Note that there is no send Access-Request section. If you add one, the server will give an error, and will refuse to start.

recv Access-Request {

Rewrite the Access-Request before it gets sent to the home server

	Auth-Type := ::proxy
}

authenticate proxy {

This is where you decide which home server the packet is proxied to. See mods-available/home_server_pool for an example of the pool1 module configuration.

#	pool1
}

Return the Access-Accept to the parent

send Access-Accept {
}

Return the Access-Reject to the parent

send Access-Reject {
}

Return the Access-Challenge to the parent

send Access-Challenge {
}

Accounting

Receive the Accounting-Request from the parent

recv Accounting-Request {

As the last thing in the section, proxy it.

Unlike Access-Request packets, there is no Acct-Type = proxy. There are sections like accounting start {…}, but those sections are called based on the Acct-Status-Type attribute in the request.

As a result, the pool1 virtual module has to be listed in this section.

#	pool1
}

Return the Accounting-Response to the parent

send Accounting-Response {
}

Other Packet Types

You can add sections here such as recv CoA-Request, send CoA-ACK, etc.

Finalize the response

finally {

Remove all Proxy-State attributes from the response.

The Proxy-State attributes we get from the home server are specific to the link between the proxy and the home server. They must not be sent back to the client.

	reply -= Proxy-State[*]

Over-write all of the parents response attributes with our response.

	parent.reply := reply
}

}