Thursday, September 15, 2005

Java TCP Tunnel analyzer

Very slick little GUI in soap-2.3.jar (http://www.ibiblio.org/maven/soap/jars/) for setting up a proxy and monitoring TCP traffic. Basic usage is:

java -cp soap-2.3.jar org.apache.soap.util.net.TcpTunnelGui 9999 localhost 8080

Where "9999" is the local socket, localhost is the destination host to monitor, "8080" is the port to monitor on the destination host. So, to monitor your communication with Gmail you could execute: java -cp soap-2.3.jar org.apache.soap.util.net.TcpTunnelGui 9999 gmail.google.com 80. Then, in your browser, you'd use the following URL:

http://localhost:9999/

However, this will only work if you don't require an HTTP proxy.

Likewise with https with a local secure link and server:
java -cp soap-2.3.jar org.apache.soap.util.net.TcpTunnelGui 8888 localhost 8443
and
https://localhost:8888/

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