Interactive TCP Relay

Databases and Networks


This application security test tool gives developers an environment for testing non-HTTP Client/Server applications, similar to that provided by interactive HTTP proxies. When started, ITR operates as a simple TCP tunnel, listening on a specific port, and forwarding all the traffic to the remote host and port. By configuring the client to treat the ITR as its server, all traffic between a client and a server can be tunneled and logged. The true power of ITR, however, lies in its ability to intercept and edit the traffic passing through it. When invoking intercept mode, the ITR stops every message sent through it (client to server and/or server to client). The traffic can then be edited freely using a built-in HEX Editor, providing a comfortable environment for testing Client/Server applications. To provide support and compatibility for various systems, the ITR can operate both its logs and HEX editor using different types of character encoding, such as ASCII or EBCDIC.


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