Linux Security Hardening: Difference between revisions
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==sshd== | ==sshd== | ||
Configure sshd to only allow root access based on public/private key identification. | |||
Alternatively, create a special login user with a random name and a long, random password: | |||
groupadd -g 1200 m3rt50acc | groupadd -g 1200 m3rt50acc | ||
useradd -g 1200 -m -u 1200 m3rt50acc | useradd -g 1200 -m -u 1200 m3rt50acc | ||
Possibly add public key to authorized_keys. | Possibly add public key to authorized_keys. Then [[Sshd_Configuration#Disallow_root_to_Connect|Disallow root to log in at all]]. | ||
=TODO= | =TODO= | ||
Revision as of 04:38, 22 April 2018
Internal
Overview
Steps
Minimal Footprint
Install a minimal image and add utilities as needed.
Eliminate Users
Remove all unneeded users.
root
Change the root's password to a long, random one.
Scan for Services Listening on Ports
netstat -tupln
Eliminate:
sshd
Configure sshd to only allow root access based on public/private key identification.
Alternatively, create a special login user with a random name and a long, random password:
groupadd -g 1200 m3rt50acc useradd -g 1200 -m -u 1200 m3rt50acc
Possibly add public key to authorized_keys. Then Disallow root to log in at all.
TODO
- Penetration detection.