ipsvd - Internet protocol service daemon
ipsvd [-hp] [-l name]
[-u user] [-i dir|-x cdb] [-t sec] host port prog
of an internet protocol service daemon provides the command line interface
as shown in SYNOPSIS above (additional options are possible), and supports
pre-defined instructions for handling connections through files in a instructions
directory, and through a constant database, as described in ipsvd-instruct(5).
Currently there are two implementations of an internet protocol service
daemon: a TCP/IP service daemon, tcpsvd(8), and an UDP/IP service daemon,
udpsvd(8). More internet protocol service daemons may appear in the future.
If an ipsvd receives a TERM signal, it exists
tcpsvd(8), sslsvd(8), udpsvd(8), ipsvd-instruct(5), ipsvd-cdb(8)
- -i dir
- read instructions for handling new connections from the instructions
directory dir. See ipsvd-instruct(5) for details.
- -x cdb
- read instructions
for handling new connections from the constant database cdb. The constant
database normally is created from an instructions directory by running
- -t sec
- timeout. This option only takes effect if the -i option
is given. While checking the instructions directory, check the time of last
access of the file that matches the clients address or hostname if any,
discard and remove the file if it wasn’t accessed within the last sec seconds;
ipsvd does not discard or remove a file if the user’s write permission is
not set, for those files the timeout is disabled. Default is 0, which means
that the timeout is disabled.
- -l name
- local hostname. Do not look up the local
hostname in DNS, but use name as hostname.
- -u [:]user[:group]
- drop permissions.
Set uid and gid to the user’s uid and gid, as found in /etc/passwd, before
running prog. If user is followed by a colon and a group, set the gid to
group’s gid, as found in /etc/group, instead of user’s gid. If group consists
of a colon-separated list of group names, set the group ids of all listed
groups. If user is prefixed with a colon, the user and all group arguments
are interpreted as uid and gids respectively, and not looked up in the
password or group file. All supplementary groups are removed.
- Look up the
client’s hostname in DNS.
- paranoid. After looking up the client’s hostname
in DNS, look up the IP addresses in DNS for that hostname, and forget about
the hostname if none of the addresses match the client’s IP address. You
should set this option if you use hostname based instructions. The -p option
implies the -h option.
Gerrit Pape <firstname.lastname@example.org>
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