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apt-get -y update
apt-get -y upgrade
apt-get -y install sudo vim unzip rsync sysstat cifs-utils nmap tcpdump tmux virt-what chrony smbclient ufw |
Configure VIM
VIM detects the mouse, and copy pasting between two terminal windows is annoying because of this. Disable this as follows for root and jtel:
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adduser jtel sudo |
Setup the Firewall
The following commands enable the firewall and allow ssh.
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ufw --force reset
ufw --force default deny incoming
ufw --force default allow outgoing
ufw allow ssh
ufw --force enable |
Setup chrony
The following commands install chrony and modify the basic chrony.conf file to remove usage of the default pool and any configured servers, and replace this with the 3 (very reliable) time servers from the German PTB.
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