3 rsync-ssl - a helper script for connecting to an ssl rsync daemon
8 rsync-ssl [--type=SSL_TYPE] RSYNC_ARGS
11 The online version of this manpage (that includes cross-linking of topics)
12 is available at <https://download.samba.org/pub/rsync/rsync-ssl.1>.
16 The rsync-ssl script helps you to run an rsync copy to/from an rsync daemon
17 that requires ssl connections.
19 The script requires that you specify an rsync-daemon arg in the style of either
20 `hostname::` (with 2 colons) or `rsync://hostname/`. The default port used for
21 connecting is 874 (one higher than the normal 873) unless overridden in the
22 environment. You can specify an overriding port via `--port` or by including
23 it in the normal spot in the URL format, though both of those require your
24 rsync version to be at least 3.2.0.
28 If the **first** arg is a `--type=SSL_TYPE` option, the script will only use
29 that particular program to open an ssl connection instead of trying to find an
30 openssl or stunnel executable via a simple heuristic (assuming that the
31 `RSYNC_SSL_TYPE` environment variable is not set as well -- see below). This
32 option must specify one of `openssl` or `stunnel`. The equal sign is
33 required for this particular option.
35 All the other options are passed through to the rsync command, so consult the
36 **rsync**(1) manpage for more information on how it works.
38 ## ENVIRONMENT VARIABLES
40 The ssl helper scripts are affected by the following environment variables:
44 Specifies the program type that should be used to open the ssl connection.
45 It must be one of `openssl` or `stunnel`. The `--type=SSL_TYPE` option
46 overrides this, when specified.
50 If specified, the value is the port number that is used as the default when
51 the user does not specify a port in their rsync command. When not
52 specified, the default port number is 874. (Note that older rsync versions
53 (prior to 3.2.0) did not communicate an overriding port number value to the
58 If specified, the value is a filename that contains a certificate to use
63 If specified, the value is a filename that contains a key for the provided
64 certificate to use for the connection.
66 0. `RSYNC_SSL_CA_CERT`
68 If specified, the value is a filename that contains a certificate authority
69 certificate that is used to validate the connection.
71 0. `RSYNC_SSL_OPENSSL`
73 Specifies the openssl executable to run when the connection type is set to
74 openssl. If unspecified, the $PATH is searched for "openssl".
78 Specifies the gnutls-cli executable to run when the connection type is set
79 to gnutls. If unspecified, the $PATH is searched for "gnutls-cli".
81 0. `RSYNC_SSL_STUNNEL`
83 Specifies the stunnel executable to run when the connection type is set to
84 stunnel. If unspecified, the $PATH is searched first for "stunnel4" and
89 > rsync-ssl -aiv example.com::mod/ dest
91 > rsync-ssl --type=openssl -aiv example.com::mod/ dest
93 > rsync-ssl -aiv --port 9874 example.com::mod/ dest
95 > rsync-ssl -aiv rsync://example.com:9874/mod/ dest
99 For help setting up an SSL/TLS supporting rsync, see the [instructions in
100 rsyncd.conf](rsyncd.conf.5#SSL_TLS_Daemon_Setup).
104 [**rsync**(1)](rsync.1), [**rsyncd.conf**(5)](rsyncd.conf.5)
108 Note that using an stunnel connection requires at least version 4 of stunnel,
109 which should be the case on modern systems. Also, it does not verify a
110 connection against the CA certificate collection, so it only encrypts the
111 connection without any cert validation unless you have specified the
112 certificate environment options.
114 This script also supports a `--type=gnutls` option, but at the time of this
115 release the gnutls-cli command was dropping output, making it unusable. If
116 that bug has been fixed in your version, feel free to put gnutls into an
117 exported RSYNC_SSL_TYPE environment variable to make its use the default.
121 Please report bugs! See the web site at <https://rsync.samba.org/>.
125 This manpage is current for version @VERSION@ of rsync.
129 Rsync is distributed under the GNU General Public License. See the file
130 [COPYING](COPYING) for details.
132 A web site is available at <https://rsync.samba.org/>. The site includes an
133 FAQ-O-Matic which may cover questions unanswered by this manual page.
137 This manpage was written by Wayne Davison.
139 Mailing lists for support and development are available at
140 <https://lists.samba.org/>.