@cindex SSL protocol, choose
@item --secure-protocol=@var{protocol}
Choose the secure protocol to be used. Legal values are @samp{auto},
-@samp{SSLv2}, @samp{SSLv3}, and @samp{TLSv1}. If @samp{auto} is used,
-the SSL library is given the liberty of choosing the appropriate
+@samp{SSLv2}, @samp{SSLv3}, @samp{TLSv1} and @samp{PFS}. If @samp{auto}
+is used, the SSL library is given the liberty of choosing the appropriate
protocol automatically, which is achieved by sending an SSLv2 greeting
and announcing support for SSLv3 and TLSv1. This is the default.
Specifying @samp{SSLv2}, @samp{SSLv3}, or @samp{TLSv1} forces the use
of the corresponding protocol. This is useful when talking to old and
-buggy SSL server implementations that make it hard for OpenSSL to
-choose the correct protocol version. Fortunately, such servers are
-quite rare.
+buggy SSL server implementations that make it hard for the underlying
+SSL library to choose the correct protocol version. Fortunately, such
+servers are quite rare.
+
+Specifying @samp{PFS} enforces the use of the so-called Perfect Forward
+Security cipher suites. In short, PFS adds security by creating a one-time
+key for each SSL connection. It has a bit more CPU impact on client and server.
+We use known to be secure ciphers (e.g. no MD4) and the TLS protocol.
@item --https-only
When in recursive mode, only HTTPS links are followed.
any of the wildcard characters, @samp{*}, @samp{?}, @samp{[} or
@samp{]}, appear in an element of @var{acclist} or @var{rejlist},
it will be treated as a pattern, rather than a suffix.
+In this case, you have to enclose the pattern into quotes to prevent
+your shell from expanding it, like in @samp{-A "*.mp3"} or @samp{-A '*.mp3'}.
@item --accept-regex @var{urlregex}
@itemx --reject-regex @var{urlregex}
Ignore case when matching files and directories. This influences the
behavior of -R, -A, -I, and -X options, as well as globbing
implemented when downloading from FTP sites. For example, with this
-option, @samp{-A *.txt} will match @samp{file1.txt}, but also
+option, @samp{-A "*.txt"} will match @samp{file1.txt}, but also
@samp{file2.TXT}, @samp{file3.TxT}, and so on.
+The quotes in the example are to prevent the shell from expanding the
+pattern.
@item -H
@itemx --span-hosts