Книга: Linux Network Administrator Guide, Second Edition

Disabling the r; Commands

Disabling the r; Commands

Start by removing the r commands if they're installed. The easiest way to disable the old r commands is to comment out (or remove) their entries in the /etc/inetd.conf file. The relevant entries will look something like this:

# Shell, login, exec and talk are BSD protocols.
shell    stream  tcp     nowait  root  /usr/sbin/tcpd /usr/sbin/in.rshd
login    stream  tcp     nowait  root  /usr/sbin/tcpd /usr/sbin/in.rlogind
exec     stream  tcp     nowait  root  /usr/sbin/tcpd /usr/sbin/in.rexecd

You can comment them by placing a # character at the start of each line, or delete the lines completely. Remember, you need to restart the inetd daemon for this change to take effect. Ideally, you should remove the daemon programs themselves, too.

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