.IP "\fBssl:\fIip\fR[\fB:\fIport\fR]"
The specified SSL \fIport\fR (default: 6633) on the host at the given
\fIip\fR, which must be expressed as an IP address (not a DNS name).
The \fB\-\-private\-key\fR, \fB\-\-certificate\fR, and
\fB\-\-ca\-cert\fR options are mandatory when this form is used.
.
.IP "\fBtcp:\fIip\fR[\fB:\fIport\fR]"
The specified TCP \fIport\fR (default: 6633) on the host at the given
\fIip\fR, which must be expressed as an IP address (not a DNS name).
.
.TP
\fBunix:\fIfile\fR
The Unix domain server socket named \fIfile\fR.