how some services works?

[Lorenzo Facello]

Hi All,
I have some services that I want to disable...
but I want to know how they really works and which are their functions!
the services in questions are:
(I found only a little decription in /etc/srevices)

dtspc (DTS Control Program)
recserv (SharedX Service Receiver)
discard
echo
daytime
chargen
pdeventd
ident

thankx in advance
LF

[Cesare Salvioni]

dtspc is used by X11 components to share info
SharedX is another X11 tool which allow to a xclient to use multiple xservers, means u can start a xclock or a xterm and share it to multiple display
the other services are internal of inetd and offer simple services: the name is meaningfull.
To see them working try to telnet to a HPUX host on the port associated to the services (see /etc/services)

In my opinion you better not stop these services, unless ur host is a server (without graphical display). In this case it could be possible to stop the second and maybe (i'm not sure X11 is the only one to use it) the first.

Hope this help
Cesare

[Cheryl Griffin · Accepted solution]

You can find documentation on these services by accessing http://www.docs.hp.com/cgi-bin/otsearch/hpsearch and searching for each.

I found this document which desccribes Port and Port range use.
http://www.docs.hp.com/hpux/onlinedocs/5990-7252/00/00/11-con.html

Also just by searching you can quickly gain what each service is involved with, without digging deeper into the links from the search.

For instance:
search --> pdeventd

HPDPS links are returned. This shows that pdeventd is related to HP Distributed Print Service. Access the link and see:
"HPDPS uses two entries that must exist in the service name database, /etc/services. These are:
pdclientd 6874/tcp
pdeventd 6875/tcp"