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IMPORTANT
NOTE: This document is based on CentOS, RedHat Linux
7.3 and Enterprise. The concepts should be similar across operating
systems, but the commands will very likely be different.
Also, never assume the directory structures exist in your system
as written in the document. Never blindly follow security
instructions -- read, review, compare, apply as it fits your
system.
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Log into each server as root. Do
the following steps:
mkdir -p /usr/local/src
cd /usr/local/src
rm -f chkrootkit.tar.gz
rm -f chkrootkit
wget http://dynamicnet.net/download/chkrootkit.tar.gz
gzip -d -c chkrootkit.tar.gz | gtar xvf -
cd chkrootkit-0.47
make sense
cd ..
ln -s chkrootkit-0.47 chkrootkit
cd chkrootkit
./chkrootkit
Handle any infections noted (on a fresh install on a
fresh system there should be none).
Now set up chkrootkit to run in cron:
- crontab -e
- (scroll to bottom)
- o (lower case o to open a new line)
- ### Security check at 3:05 AM (ENTER)
5 3 * * * (cd /usr/local/src/chkrootkit; ./chkrootkit | mail -s
"[PUT IN MEANINGFUL SERVER NAME] chkrootkit output" [VALID EMAIL ADDRESS])
- Shift ZZ to save
Please be sure to replace the [MEANINGFUL SERVER NAME]
with a proper server name, and [VALID EMAIL ADDRESS] with a valid email
address.
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IMPORTANT
NOTE: This document and all
linked document is being provided as a good will gesture to the
Parallels H-Sphere community and to others who may benefit from its use.
Dynamic Net, Inc. makes no representations implied or explicit
as to their value or warranty. Dynamic Net, Inc. will not be
held liable for any damage resulting in the application of the
steps and procedures noted. If you feel uncomfortable at
all about doing any of the steps, make a complete system backup
and hire a third party like
We Manage Servers
to do the work for you.
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