Provides the type of credential required by a proxy server for clients that connect to a Web service from behind a firewall.
| HttpProxyCredentialType value | Meaning |
|---|---|
| None | No credentials are presented or used |
| Basic | Client uses basic authentication to connect to the proxy server |
| Digest | Client uses digest authentication to connect to the proxy server |
| NTLM | Client uses NTLM (NT LAN Manager) authentication to connect to the proxy server |
| Windows | Client uses integrated Windows authentication to connect to the proxy server |