disable atd
sudo apt autoremove at
Disable anacron
comment the lines
naon /etc/crontab
# 25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
# 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
# 52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
disable bluetooth auto on
sudo nano /etc/bluetooth/main.conf
AutoEnable=false
bluez icon > right click > plugins > Power Manager > configuration > untick Auto Power on
disable autofs
disable automount usb via udisk
sudo nano /etc/udev/rules.d/85-no-automount.rules
SUBSYSTEM=="usb", ENV{UDISKS_AUTO}="0"
sudo service udev restart
Disable apport
app crash reporting
sudo nano /etc/default/apport
enabled=0
sudo apt autoremove apport
Disable avahi
sudo apt autoremove avahi-daemon avahi-utils
Disable Ctrl+Alt+Delete
sudo systemctl mask ctrl-alt-del.target sudo systemctl daemon-reload
Disable Cups
cups is print server
sudo apt autoremove cups
Disable ModemManager
modemmanager allows to use internet via phone modem i.e old phones like nokia suite or
sudo apt autoremove modemmanager
Disable NFS
standard *nix/bsd file shaing
sudo apt autoremove nfs-kernel-server nfs-common portmap rpcbind autofs
sudo apt-get purge nfs-kernel-server nfs-common portmap rpcbind autofs
Disable Snmp
sudo apt-get purge --auto-remove snmp
Disable Telnet
sudo apt-get purge telnetd inetutils-telnetd telnetd-ssl telnet
remove fonts
sudo apt-get purge --auto-remove fonts-kacst* fonts-lao fonts-takao-pgothic fonts-tlwg* fonts-nanum fonts-khmeros-core fonts-smc-* fonts-kacst fonts-kacst-one fonts-khmeros-core fonts-lklug-sinhala fonts-guru fonts-nanum fonts-noto-cjk fonts-takao-pgothic fonts-tibetan-machine fonts-guru-extra fonts-lao fonts-sil-padauk fonts-sil-abyssinica fonts-tlwg-* fonts-lohit-* fonts-beng fonts-beng-extra fonts-gargi fonts-gubbi fonts-gujr fonts-gujr-extra fonts-kalapi fonts-lohit-gujr fonts-samyak-* fonts-navilu fonts-nakula fonts-orya-extra fonts-pagul fonts-sahadeva fonts-sarai fonts-smc fonts-telu-extra fonts-wqy-microhei
src:
https://bookofzeus.com/harden-ubuntu/disable-services/
https://www.mail-archive.com/[email protected]/msg11644.html
list essential pkgs
dpkg-query -Wf '${Package;-40}${Essential}\n' | grep yes
list old/residual config files
dpkg-query -f '${Package} ${Status}\n' -W | grep config-files$ | cut -d" " -f1
dpkg --list |grep "^rc" | cut -d " " -f 3
remove :
dpkg --list |grep "^rc" | cut -d " " -f 3 | xargs sudo dpkg --purge
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