Linode/Setup: Difference between revisions

62 bytes added ,  22:56, 8 October 2023
Removing a user from sudo group and removing an authorized key
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(Removing a user from sudo group and removing an authorized key)
 
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usermod -aG sudo USERNAME
usermod -aG sudo USERNAME
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* To remove a user from <code>sudo</code> group
<syntaxhighlight lang="bash">
sudo gpasswd -d USERNAME sudo
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Also, to remove their ability to ssh as root, remove their public key from <code>.ssh/authorized_keys</code>


== Security (only need to do this at setup) ==
== Security (only need to do this at setup) ==
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ip6tables-restore < /etc/iptables/rules.v6
ip6tables-restore < /etc/iptables/rules.v6
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== Setting up an SMTP server ==
By default, Linode disables SMTP ports 587 etc. This requires a manual human-facing support ticket to remove. (Done by @Jonny on Nov 25 2022)