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F

Fax Web Service Interface

Concords Fax Web service Interface was designed to provide the most comprehensive control over your fax integration needs. With both Inbound and Outbound interfaces available you can send requests via Web Services and SOAP that will perform such tasks as submitting faxes, checking status, or polling the server for inbound faxes that can be downloaded. Such requests can be submitted from any application that is capable of calling Web Service methods.

FTP Protocol

FTP, or “File Transfer Protocol” is a standard protocol used to transfer files from one host to another over a network. Simple to use but not secure as is with authentication is sent in clear text. You can use SSL over FTP but it’s not the best choice because FTP uses multiple TCP connections which can make it hard to enforce when multiple clients are accessing the server simultaneously. For this reason for secure FTP we suggest using FTPS (TLS) or SFTP (SSH).

FTPS Protocol

FTPS is an extension to the FTP standard where a client can explicitly or implicitly challenge the FTPS server for security. An explicit request over FTPS requires the client to challenge the server with a valid mechanism for negotiating security authentication. The server receives the challenge and either accepts or denies the connection. Common mechanisms for FTPS security are AUTH TLS and AUTH SSL. With Implicit FTPS configurations the client immediately challenges the FTPS server with a TLS/SSL ClientHello message and if it is not received the server should drop the connection.