"scp" access denied:/etc/security/access.conf Post: 302310180

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ypserv.conf

YPSERV.CONF(5)							 Reference Manual						    YPSERV.CONF(5)

NAME

       ypserv.conf - configuration file for ypserv and rpc.ypxfrd

DESCRIPTION

       ypserv.conf  is	an ASCII file which contains some options for ypserv. It also contains a list of rules for special host and map access for
       ypserv and rpc.ypxfrd. This file will be read by ypserv and rpc.ypxfrd at startup, or when receiving a SIGHUP signal.

       There is one entry per line. If the line is a option line, the format is:

	      option: <argument>

       The line for an access rule has the format:

	      host:domain:map:security

       All rules are tried one by one. If no match is found, access to a map is allowed.

       Following options exist:

       files: 30
	      This option specifies, how many database files should be cached by ypserv.  If 0 is specified, caching is disabled. Decreasing  this
	      number is only possible, if ypserv is restarted.

       trusted_master: server
	      If  this	option is set on a slave server, new maps from the host server will be accepted as master. The default is, that no trusted
	      master is set and new maps will not be accepted.
	      Example:
	      trusted_master: ypmaster.example.org

       xfr_check_port: [<yes>|no]
	      With this option enabled, the NIS master server have to run on a port < 1024. The default is "yes" (enabled).

       The field descriptions for the access rule lines are:

       host   IP address. Wildcards are allowed.
	      Examples:
	      131.234. = 131.234.0.0/255.255.0.0
	      131.234.214.0/255.255.254.0

       domain specifies the domain, for which this rule should be applied. An asterix as wildcard is allowed.

       map    name of the map, or asterisk for all maps.

       security
	      one of none, port, deny:

       none   always allow access.

       port   allow access if from port < 1024. Otherwise do not allow access.

       deny   deny access to this map.

FILES

       /etc/ypserv.conf

SEE ALSO

       ypserv(8), rpc.ypxfrd(8)

WARNINGS

       The access rules for special maps are no real improvement in security, but they make the life a little bit harder for a potential hacker.

BUGS

       Solaris clients don't use privileged ports. All security options which depend on privileged ports cause big problems on Solaris clients.

AUTHOR

       Thorsten Kukuk <kukuk@suse.de>

YP Server							   October 2002 						    YPSERV.CONF(5)