Hi, Is there a difference in authenticating a natted or non-nated UA using www_authen? The reason i'm asking is because when my UA is directly connected to the internet it authenticates fine but when NATed I get the following error: parse_headers: flags=4096 0(12877) pre_auth(): Credentials with given realm not found 0(12877) ---:: didn't authorize 0(12877) build_auth_hf(): 'WWW-Authenticate: Digest realm="ser.edpnet.net", nonce="40f7be4edbd22e214821f2a3937968fc049ae290" ' 0(12877) parse_headers: flags=-1 I used the natconfig from this site: http://www.informatik.uni-bremen.de/~prelle/terena/cookbook/Cookbook_D2/ch04 s07.html thanks, Bart