
Wall
The wall daemon allows an administrator to inform users on the network of an
update by popping up a message on their screens. The message can be anything
from a notification of system backup, to a request to change the user
An intruder can try to trick your users into executing commands that allow
access to the intruder. Or, in a mischief attack, the intruder can continually
send garbage messages to your users' screens, making it impossible for the users
to work. This is called a
This option checks to see if the wall daemon is running.
Risk: Medium
Fix: Disable the server. Place a # at the beginning of the appropriate line in the
file /etc/inetd.conf, and then send the SIGHUP signal to the inetd process.
For example, a disabled wall daemon entry might appear as: