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Manpages sanedSection: SANE Scanner Access Now Easy (1)Updated: 8 Oct 2002 Index Return to Main Contents NAMEsaned - SANE network daemonSYNOPSISsaned [-d|-s [n]]DESCRIPTIONsaned is the SANE (Scanner Access Now Easy) daemon that allows remote clients to access image acquisition devices available on the local host.OPTIONSThe -d and -s flags request that saned run in debug mode (as opposed to inetd(8) mode). In this mode, saned explicitly waits for a connection request. When compiled with debugging enabled, these flags may be followed by a number to request debug info. The larger the number, the more verbose the debug output. E.g., -d128 will request printing of all debug info. Debug level 0 means no debug output at all. The default value is 2. If flag -d is used, the debug messages will be printed to stderr while -s requests using syslog. CONFIGURATIONFirst and foremost: please do not install saned as setuid root without due consideration. Especially when using dynamic linking, there is a potential for introducing security holes when running this program as root.The contents of the saned.conf file is a list of host names or IP addresses that are permitted to use local SANE devices. Connections from localhost are always permitted. Empty lines and lines starting with a hash mark (#) are ignored. A line containing the single character ``+'' is interpreted to match any hostname. This allows any remote machine to use your scanner and may present a security risk, so this shouldn't be used unless you know what you're doing. A sample configuration file is shown below:
The case of the host names does not matter, so AHost.COM is considered identical to ahost.com. For saned to work properly, it is also necessary to add a configuration line to /etc/inetd.conf. The configuration line normally looks like this:
However, if your system uses tcpd(8) for additional security screening, you may want to disable saned access control by putting ``+'' in saned.conf and use a line of the following form in /etc/inetd.conf instead:
Note that both examples assume that there is a saned group and a saned user. If you follow this example, please make sure that the access permissions on the special device are set such that saned can access the scanner (the program generally needs read and write access to scanner devices). If xinetd is installed on your system instead of inetd the following example for xinetd.conf may be helpful:
Finally, it is also necessary to add a line of the following form to /etc/services:
RESTRICTIONSIn addition to the control connection (port 6566) saned also uses a data connection. The port of this socket is selected by the operating system and can't be specified by the user currently. This may be a problem if the connection must go through a firewall (packet filter).FILES
ENVIRONMENT
SEE ALSOsane(7), scanimage(1), xscanimage(1), xcam(1), sane-dll(5), sane-net(5), sane-backendname(5)http://www.penguin-breeder.org/?page=sane-net AUTHORDavid Mosberger
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