#!/bin/bash # forksand-sf-internal-bootstrap # GPLv3+ # This script does some initial setup and config # Log script exec > >(tee /root/bootstrap-sf-internal.log) 2>/root/bootstrap-sf-internal.err set -x # Set locale echo "en_US.UTF-8 UTF-8" > /etc/locale.gen locale-gen update-locale # XXX Set timezone ln -sf /usr/share/zoneinfo/America/Denver /etc/localtime # Use apt-cache echo 'Acquire::http::Proxy "http://10.22.22.112:3142";' > /etc/apt/apt.conf # Set up git for tracking. XXX Ansible... XXX apt-get -y install git sudo cd /etc git init chmod og-rwx /etc/.git cat > /etc/.gitignore < /etc/network/if-pre-up.d/iptables < /etc/iptables.test.rules < /etc/iptables.up.rules cd /etc ; git add . ; git commit -a -m 'Set up firewall.' # scriptlet for root to reload firewall rules cat > /root/iptables-reload < /etc/iptables.up.rules EOF chmod 700 /root/iptables-reload # SET UP APT # cat > /etc/apt/sources.list < ~/.vimrc echo :syntax on > /home/jebba/.vimrc chown jebba:jebba /home/jebba/.vimrc echo export EDITOR=vi >> /root/.bashrc # XXX Passwordless sudo XXX Ya, probably remove sed -i -e 's/%sudo\tALL=(ALL:ALL) ALL/%sudo ALL=(ALL) NOPASSWD: ALL/g' /etc/sudoers adduser jebba sudo cd /etc ; git add . ; git commit -a -m 'Set up passwordless sudo' # SSH config XXX sed cruft sed -i \ -e 's/PermitRootLogin yes/PermitRootLogin no/g' \ -e 's/\#PermitRootLogin prohibit-password/PermitRootLogin no/g' \ -e 's/\#PasswordAuthentication yes/PasswordAuthentication no/g' \ -e 's/\#X11Forwarding yes/X11Forwarding no/g' \ /etc/ssh/sshd_config echo 'KexAlgorithms curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256' >> /etc/ssh/sshd_config echo 'Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr' >> /etc/ssh/sshd_config # Need to update/fix for Debian Buster (testing/10). This line breaks Buster: #echo 'MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,umac-128@openssh.com' >> /etc/ssh/sshd_config # XXX Add admins as only allowed ssh users # XXX add user for ansbile echo "AllowUsers jebba" >> /etc/ssh/sshd_config cd /etc ; git add . ; git commit -a -m 'Set up sshd' systemctl restart sshd # Startup XXX disable unneeded. for i in rsync exim4 saned do echo $i /usr/sbin/update-rc.d $i disable done # XXX KILL THIS, listening on public port (firewalled, but still): # tcp 0 0 0.0.0.0:5355 0.0.0.0:* LISTEN 296/systemd-resolve cd /etc ; git add . ; git commit -a -m 'Turn off junk on boot' # GRUB sed -i -e 's/^GRUB_TIMEOUT=5/GRUB_TIMEOUT=0/g' /etc/default/grub sed -i -e 's/^#GRUB_TERMINAL=console/GRUB_TERMINAL=console/g' /etc/default/grub sed -i -e 's/^GRUB_CMDLINE_LINUX=""/GRUB_CMDLINE_LINUX="ipv6.disable=1"/g' /etc/default/grub echo 'GRUB_DISABLE_OS_PROBER=true' >> /etc/default/grub update-grub cd /etc ; git add . ; git commit -a -m 'GRUB tweaks' # Don't load IPv6 kernel modules. echo blacklist ipv6 > /etc/modprobe.d/ipv6.conf echo alias net-pf-10 off >> /etc/modprobe.d/aliases.conf echo alias ivp6 off >> /etc/modprobe.d/aliases.conf # Disable IPv6 with sysctl. cat >> /etc/sysctl.conf <