Tomster/Linux-Setup-Scripts
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Split SSH hardening config

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Signed-off-by: Tommy <contact@tommytran.io>
This commit is contained in:
Tommy 2024-02-07 09:52:52 -07:00
parent 0d7dc2817f
commit 6cdbe919f9
Signed by: Tomster
GPG Key ID: 555C902A34EC968F
8 changed files with 16 additions and 23 deletions
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3
Fedora-Workstation-39.sh
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@ -55,8 +55,7 @@ sudo firewall-cmd --reload
sudo firewall-cmd --lockdown-on sudo firewall-cmd --lockdown-on
# Harden SSH # Harden SSH
echo 'GSSAPIAuthentication no' | sudo tee /etc/ssh/ssh_config.d/10-custom.conf unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
echo 'VerifyHostKeyDNS yes' | sudo tee -a /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
# Security kernel settings # Security kernel settings

7
GCP-Debian-11.sh
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@ -50,11 +50,10 @@ sudo ufw enable
sudo ufw allow OpenSSH sudo ufw allow OpenSSH
# Harden SSH # Harden SSH
echo 'GSSAPIAuthentication no unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
VerifyHostKeyDNS yes' | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
sudo mkdir -p /etc/systemd/system/ssh.service.d sudo mkdir -p /etc/systemd/system/ssh.service.d
unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/ssh.service.d/override.conf unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/ssh.service.d/override.conf
sudo systemctl daemon-reload sudo systemctl daemon-reload

9
Proxmox-8.sh
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@ -33,13 +33,10 @@ curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.con
systemctl restart chronyd systemctl restart chronyd
# Harden SSH # Harden SSH
echo 'GSSAPIAuthentication no curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | tee /etc/ssh/sshd_config.d/10-custom.conf
VerifyHostKeyDNS yes' | tee /etc/ssh/ssh_config.d/10-custom.conf
chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
echo 'PasswordAuthentication no
KerberosAuthentication no
GSSAPIAuthentication no' | tee /etc/ssh/sshd_config.d/10-custom.conf
chmod 644 /etc/ssh/sshd_config.d/10-custom.conf chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | tee /etc/ssh/ssh_config.d/10-custom.conf
chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
mkdir -p /etc/systemd/system/ssh.service.d mkdir -p /etc/systemd/system/ssh.service.d
curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | tee /etc/systemd/system/ssh.service.d/override.conf curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | tee /etc/systemd/system/ssh.service.d/override.conf
systemctl daemon-reload systemctl daemon-reload

8
RHEL-Server-9.sh
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@ -42,12 +42,10 @@ sudo firewall-cmd --reload
sudo firewall-cmd --lockdown-on sudo firewall-cmd --lockdown-on
# Harden SSH # Harden SSH
mkdir -p /etc/ssh/ssh_config.d /etc/ssh/sshd_config.d unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
echo 'GSSAPIAuthentication no
VerifyHostKeyDNS yes' | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/sshd.service.d/override.conf unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/sshd.service.d/override.conf
sudo systemctl daemon-reload sudo systemctl daemon-reload
sudo systemctl restart sshd sudo systemctl restart sshd

7
Ubuntu-22.04-Server.sh
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@ -59,11 +59,10 @@ sudo ufw enable
sudo ufw allow SSH sudo ufw allow SSH
# Harden SSH # Harden SSH
echo 'GSSAPIAuthentication no unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
VerifyHostKeyDNS yes' | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config/10-custom.conf | sudo tee /etc/ssh/sshd_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf sudo chmod 644 /etc/ssh/sshd_config.d/10-custom.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
sudo mkdir -p /etc/systemd/system/ssh.service.d sudo mkdir -p /etc/systemd/system/ssh.service.d
unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/ssh.service.d/override.conf unpriv curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/systemd/system/sshd.service.d/local.conf | sudo tee /etc/systemd/system/ssh.service.d/override.conf
sudo systemctl daemon-reload sudo systemctl daemon-reload

3
Ubuntu-23.10-Desktop.sh
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@ -66,8 +66,7 @@ sudo snap install ufw
sudo ufw enable sudo ufw enable
# Harden SSH # Harden SSH
echo 'GSSAPIAuthentication no unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
VerifyHostKeyDNS yes' | sudo tee -a /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf
# Kernel hardening # Kernel hardening

2
etc/ssh/ssh_config.d/10-custom.conf Normal file
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@ -0,0 +1,2 @@
GSSAPIAuthentication no
VerifyHostKeyDNS yes

0
etc/ssh/sshd_config/10-custom.conf → etc/ssh/sshd_config.d/10-custom.conf
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