Tomster/Linux-Setup-Scripts
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8 changed files with 14 additions and 11 deletions
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2
Fedora-Server-40.sh
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@ -80,7 +80,7 @@ fi
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
sudo mkdir -p /etc/systemd/coredump.conf.d
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077

2
Fedora-Workstation-40.sh
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@ -91,7 +91,7 @@ fi
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
sudo mkdir -p /etc/systemd/coredump.conf.d
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077

5
Proxmox-8.sh
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@ -78,6 +78,7 @@ chmod 644 /etc/modprobe.d/server-blacklist.conf
sed -i 's/kernel_io_uring_disable = 2/#ernel_io_uring_disable = 2/g'
curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-server.conf | tee /etc/sysctl.d/99-server.conf
chmod 644 /etc/sysctl.d/99-server.conf
dracut -f
sysctl -p
# Rebuild initramfs
@ -85,9 +86,9 @@ update-initramfs -u
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | tee /etc/security/limits.d/30-disable-coredump.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | tee /etc/systemd/coredump.conf.d/disable.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077
# Harden SSH

2
RHEL-9.sh
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@ -69,7 +69,7 @@ sudo grubby --update-kernel=ALL --args='mitigations=auto,nosmt spectre_v2=on spe
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
sudo mkdir -p /etc/systemd/coredump.conf.d
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077

3
Ubuntu-23.10-Desktop.sh
View File

@ -61,6 +61,7 @@ fi
sudo chmod 644 /etc/modprobe.d/workstation-blacklist.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-workstation.conf | sudo tee /etc/sysctl.d/99-workstation.conf
sudo chmod 644 /etc/sysctl.d/99-workstation.conf
sudo dracut -f
sudo sysctl -p
# Rebuild initramfs
@ -69,7 +70,7 @@ sudo update-initramfs -u
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
sudo mkdir -p /etc/systemd/coredump.conf.d
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077

3
Ubuntu-24.04-Server.sh
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@ -62,6 +62,7 @@ unpriv curl https://raw.githubusercontent.com/secureblue/secureblue/live/config/
sudo chmod 644 /etc/modprobe.d/server-blacklist.conf
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-server.conf | sudo tee /etc/sysctl.d/99-server.conf
sudo chmod 644 /etc/sysctl.d/99-server.conf
sudo dracut -f
sudo sysctl -p
# Rebuild initramfs
@ -70,7 +71,7 @@ sudo update-initramfs -u
# Disable coredump
umask 022
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf
sudo mkdir -p /etc/systemd/coredump.conf.d
mkdir -p /etc/systemd/coredump.conf.d
unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf | sudo tee /etc/systemd/coredump.conf.d/disable.conf
umask 077

4
etc/sysctl.d/99-server.conf
View File

@ -71,8 +71,8 @@ net.ipv6.conf.*.accept_redirects = 0
net.ipv4.conf.*.rp_filter = 1
# Respond to ICMP
net.ipv4.icmp_echo_ignore_all = 0
net.ipv6.icmp.echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_all = 1
net.ipv6.icmp.echo_ignore_all = 1
# Enable IP Forwarding
# Almost all of my servers run Docker anyways, and Docker absolutely requires this.

4
etc/sysctl.d/99-workstation.conf
View File

@ -42,8 +42,6 @@ net.core.bpf_jit_harden = 2
kernel.unprivileged_userns_clone = 1
# Disable ptrace. Not needed on workstations.
# Also, the Debian gVisor package from Google will just take priority over this with their
# /etc/sysctl.d/999-gvisor.conf file.
kernel.yama.ptrace_scope = 3
# https://madaidans-insecurities.github.io/guides/linux-hardening.html#sysctl
@ -54,6 +52,8 @@ kernel.perf_event_paranoid = 4
# https://github.com/containerd/containerd/issues/9048
# Disable io_uring, a very sus feature.
# Note that this will make using Proxmox extremely annoying though, so you might wanna comment this out
# on a Proxmox node.
kernel_io_uring_disable = 2
# https://madaidans-insecurities.github.io/guides/linux-hardening.html#sysctl-kernel