3 rsync-ssl - a helper script for connecting to an ssl rsync daemon
8 rsync-ssl [--type=SSL_TYPE] RSYNC_ARGS
13 The rsync-ssl script helps you to run an rsync copy to/from an rsync daemon
14 that requires ssl connections.
16 The script requires that you specify an rsync-daemon arg in the style of either
17 `hostname::` (with 2 colons) or `rsync://hostname/`. The default port used for
18 connecting is 874 (one higher than the normal 873) unless overridden in the
19 environment. You can specify an overriding port via `--port` or by including
20 it in the normal spot in the URL format, though both of those require your
21 rsync version to be at least 3.2.0.
25 If the **first** arg is a `--type=SSL_TYPE` option, the script will only use
26 that particular program to open an ssl connection instead of trying to find an
27 openssl or stunnel executable via a simple heuristic (assuming that the
28 `RSYNC_SSL_TYPE` environment variable is not set as well -- see below). This
29 option must specify one of `openssl` or `stunnel`. The equal sign is
30 required for this particular option.
32 All the other options are passed through to the rsync command, so consult the
33 **rsync**(1) manpage for more information on how it works.
35 # ENVIRONMENT VARIABLES
37 The ssl helper scripts are affected by the following environment variables:
39 0. `RSYNC_SSL_TYPE` Specifies the program type that should be used to open the
40 ssl connection. It must be one of `openssl` or `stunnel`. The
41 `--type=SSL_TYPE` option overrides this, when specified.
42 0. `RSYNC_SSL_PORT` If specified, the value is the port number that is used as
43 the default when the user does not specify a port in their rsync command.
44 When not specified, the default port number is 874. (Note that older rsync
45 versions (prior to 3.2.0) did not communicate an overriding port number
46 value to the helper script.)
47 0. `RSYNC_SSL_CERT` If specified, the value is a filename that contains a
48 certificate to use for the connection.
49 0. `RSYNC_SSL_CA_CERT` If specified, the value is a filename that contains a
50 certificate authority certificate that is used to validate the connection.
51 0. `RSYNC_SSL_OPENSSL` Specifies the openssl executable to run when the
52 connection type is set to openssl. If unspecified, the $PATH is searched
54 0. `RSYNC_SSL_GNUTLS` Specifies the gnutls-cli executable to run when the
55 connection type is set to gnutls. If unspecified, the $PATH is searched
57 0. `RSYNC_SSL_STUNNEL` Specifies the stunnel executable to run when the
58 connection type is set to stunnel. If unspecified, the $PATH is searched
59 first for "stunnel4" and then for "stunnel".
63 > rsync-ssl -aiv example.com::mod/ dest
65 > rsync-ssl --type=openssl -aiv example.com::mod/ dest
67 > rsync-ssl -aiv --port 9874 example.com::mod/ dest
69 > rsync-ssl -aiv rsync://example.com:9874/mod/ dest
73 **rsync**(1), **rsyncd.conf**(5)
77 Note that using an stunnel connection requires at least version 4 of stunnel,
78 which should be the case on modern systems. Also, it does not verify a
79 connection against the CA certificate collection, so it only encrypts the
80 connection without any cert validation unless you have specified the
81 certificate environment options.
83 This script also supports a `--type=gnutls` option, but at the time of this
84 release the gnutls-cli command was dropping output, making it unusable. If
85 that bug has been fixed in your version, feel free to put gnutls into an
86 exported RSYNC_SSL_TYPE environment variable to make its use the default.
90 Please report bugs! See the web site at <https://rsync.samba.org/>.
94 This man page is current for version @VERSION@ of rsync.
98 rsync is distributed under the GNU General Public License. See the file
101 A web site is available at <https://rsync.samba.org/>. The site includes an
102 FAQ-O-Matic which may cover questions unanswered by this manual page.
106 This manpage was written by Wayne Davison.
108 Mailing lists for support and development are available at
109 <https://lists.samba.org/>.