HTTP/1.1 407 (Proxy Authentication Required) Proxy Access Denied
Date: Wed, 07 Feb 2001 17:04:47 GMT
Proxy-Authenticate: NTLM
Proxy-Authenticate: Basic realm="209.167.153.2"
Server: Microsoft-IIS/4.0
Client-Date: Wed, 07 Feb 2001 17:07:57 GMT
Client-Peer: 209.167.153.2:80
Client-Warning: Unsupported authentication scheme 'ntlm'