Linux Security Cookbook [Electronic resources] نسخه متنی

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Linux Security Cookbook [Electronic resources] - نسخه متنی

Daniel J. Barrett, Robert G. Byrnes, Richard Silverman

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Recipe 3.5 Adding a New Service (xinetd)



3.5.1 Problem



You want to add a new
network service, controlled by xinetd.


3.5.2 Solution


Create a new configuration file in /etc/xinetd.d
with at least the following information:

service SERVICE_NAME                       Name from /etc/services; see services(5)
{
server = /PATH/TO/SERVER The service executable
server_args = ANY_ARGS_HERE Any arguments; omit if none
user = USER Run the service as this user
socket_type = TYPE stream, dgram, raw, or seqpacket
wait = YES/NO yes = single-threaded, no = multithreaded
}

Name the file SERVICE_NAME. Then signal
xinetd to read your new service file. [Recipe 3.3]


3.5.3 Discussion


To create an
xinetd configuration file for
your service, you must of course know your service's
desired properties and behavior. Is it stream based? Datagram based?
Single-threaded or multithreaded? What arguments does the server
executable take, if any?

xinetd configuration files have a tremendous
number of additional keywords and values. See xinetd.conf(5) for full
details.

xinetd reads all files in
/etc/xinetd.d only if
/etc/xinetd.conf tells it to, via this line:

includedir /etc/xinetd.d

Check your
/etc/xinetd.conf to confirm the location of its
includedir.


3.5.4 See Also


xinetd(8), xinetd.conf(5), services(5). The xinetd
home page is http://www.synack.net/xinetd.

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