Hi All Using freeradius 2.1.4 the following works if I user the hints file. DEFAULT Called-Station-Id == "splns357" User-Name := "%{User-Name}@mb.webshield.net.au" The user is proxied to the correct server and the user is correctly set. I now need to proxy based on the User-Name which in this case will always be a telephone number (Mobile Broadband SIM's) I had added the following to the users file (which I hope to change to the fast users later) 61466004163 Proxy-To-Realm := "mb.webshield.net.au" User-Name := "%{User-Name}@mb.webshield.net.au" This proxies the user to the next server but does not rewrite the username, I've also tried a couple of other in this file but none seem to work. rad_recv: Access-Request packet from host 118.67.209.51 port 56036, id=1, length=92 Framed-Protocol = PPP User-Name = "61466004163" User-Password = "password" Calling-Station-Id = "61466004163" Called-Station-Id = "splns357" Service-Type = Framed-User NAS-IP-Address = 118.67.208.51 +- entering group authorize {...} ++[preprocess] returns ok [auth_log] expand: /var/log/radius/radacct/%{Client-IP-Address}/auth-detail-%Y%m%d -> /var/log/radius/radacct/118.67.209.51/auth-detail-20090827 [auth_log] /var/log/radius/radacct/%{Client-IP-Address}/auth-detail-%Y%m%d expands to /var/log/radius/radacct/118.67.209.51/auth-detail-20090827 [auth_log] expand: %t -> Thu Aug 27 09:40:24 2009 ++[auth_log] returns ok ++[chap] returns noop ++[mschap] returns noop [suffix] No '@' in User-Name = "61466004163", looking up realm NULL [suffix] No such realm "NULL" ++[suffix] returns noop [eap] No EAP-Message, not doing EAP ++[eap] returns noop [files] users: Matched entry 61466004163 at line 1 [files] expand: %{User-Name}@mb.webshield.net.au -> 61466004163@mb.webshield.net.au ++[files] returns ok ++[expiration] returns noop ++[logintime] returns noop ++[pap] returns noop 2009-08-27T09:40:24.327336: Verbose: RLM_PYTHON: handling Authorize request... ++[python] returns ok +- entering group pre-proxy {...} [attr_filter.pre-proxy] expand: %{Realm} -> mb.webshield.net.au ++[attr_filter.pre-proxy] returns noop Sending Access-Request of id 250 to 118.67.209.21 port 1812 Framed-Protocol = PPP User-Name = "61466004163" User-Password = "password" Calling-Station-Id = "61466004163" Called-Station-Id = "splns357" Service-Type = Framed-User NAS-IP-Address = 118.67.208.51 Proxy-State = 0x31 Proxying request 0 to home server 118.67.209.21 port 1812 Sending Access-Request of id 250 to 118.67.209.21 port 1812 Framed-Protocol = PPP User-Name = "61466004163" User-Password = "password" Calling-Station-Id = "61466004163" Called-Station-Id = "splns357" Service-Type = Framed-User NAS-IP-Address = 118.67.208.51 Proxy-State = 0x31 Going to the next request Waking up in 0.9 seconds. Waking up in 13.0 seconds. rad_recv: Access-Reject packet from host 118.67.209.21 port 1812, id=250, length=23 Proxy-State = 0x31 Thanks All Mike