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System Service

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5 replies

by night-owl-24-7-365

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How might one do the following:
a.Configure the system so that the talk service in NOT started at system startup.
b.Reboot your machine.
c.Have the display show the result of
trying to execute the talk command
d.Remove the password from the hacker's account. e.Locate user logon id's that have no password.
f.Have the display show the result of the
locate search above.

5 replies

by earlezo

Wow, a biggie.
a) in modern systems, talk is controlled by the xinetd service so a file in xinetd.d starts the talk server. Simply make sure that the line "disable = yes" is in the body of the talk control file. ie between the { ... } braces.

b) Reboot - if you are root, easy - type the command "reboot" or type "init 6" as root or "shutdown -r now"
Surely you wanted more than that?

c) In redhat systems, the talk command resides at usr/bin Rename the talk executable to ztalk or something and replace talk with a script file that does d, e and f

Please feel free to ask for more details.

E

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