How do I use "Why Can't I Connect?"
Search the computer for ports in use / connected ports, listening ports, reserved ports, and all ports that can not bind.
Enter the starting number of the range of ports to be tested.
Enter the total ports to test. Enter 0 to test all remaining ports.
Select the type of test to run on the ports.
Test for ports in use / connected ports.
Test for listening ports.
Test for reserved ports (ports reserved by the operating system).
Test for all ports that return an error while binding.
The 'Show Trace Message Boxes' check box is a convenience for turning off trace message boxes during ports in use testing (there may be many errors.)
Release 1.12.0
In this release
1. Added SSL / TLS support for IMAP, POP3, SMTP, LDAP, Usenet, and Generic Client connections.
2. Added a trace showing the SSL / TLS certificate information after a connection.
3. Fixed a bug when connecting a Generic Client that expects a response.
Warning: this application links to the openssl libraries. Do not download this application if this is illegal in your country.
The SSL / TLS certificate information trace shows the valid date range and subject information if the trace detail level is set to Medium. The trace additionally shows the issuer information if the trace detail level is set to High.