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P4 CLI Documentation | 2025.2

# Connecting to services that require plaintext connections

If your P4 Server installation requires plaintext (in order to support older P4 Server applications), set `P4PORT` to `tcp:`hostname`:`port`.` If you attempt to use SSL/TLS to connect to a service that expects plaintext connections, the following error message is displayed:

    Perforce client error:
        SSL connect to ssl:_host_:_port_ failed (Connection reset by peer).
        Remove SSL protocol prefix from P4PORT.

Set `P4PORT` to `tcp:`hostname`:`port`` (or, if you are using applications at release 2011.1 or earlier, set `P4PORT` to ``hostname`:`port``), and attempt to reconnect to the service.

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