hello everybody!!


i would like to know one thing: if i configure a ppp sever in linux and i dont type the chmod u+s /usr/sbin/pppd command, does the windows users that will acces my ppp server, can login?????

the chmod u+s /usr/sbin/pppd what exactly is??i know that is a command for users to execute pppd with root rights, but which users???? the ones in windows that dial to acces via modem the ppp server, or the users that works with the same pc that root (where is the ppp server.....)

thank you

"which users???? the ones in windows that dial to acces via modem the ppp server, or the users that works with the same pc that root (where is the ppp server.....)"

It gives the permission to use pppd to any user, remote or local. You distinguish between different users by putting them in different groups. For example, suppose that you want local users to be able to use pppd but not remote users. You can create a group called the ingroup which includes all local users. Then set the ownership of /usr/sbin/pppd to root ingroup:
chown root ingroup /usr/sbin/pppd
and set the permissions of /usr/sbin/pppd to:
chmod 770 /usr/sbin/pppd
and only the ingroup can use pppd.

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