it-infra/m-labs-intl/setup.md

Setup m-labs-intl.com server

# Install required packages
apt install git nginx-full python3 python3.12-venv python3-pip iptables ufw \
  strongswan strongswan-swanctl strongswan-pki strongswan-libcharon
snap install --classic certbot
ln -s /snap/bin/certbot /usr/bin/certbot

# Set up networks (includes GRE)
cp 60-tunnels.yaml /etc/netplan/
netplan apply

# set up IPsec-AH connection
cp m-labs.hk.conf /etc/swanctl/conf.d/
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
sysctl -p
cp m-labs.hk /etc/swanctl/pubkey/m-labs.hk # get pubkey from nixbld
pki --gen --type rsa --size 4096 --outform pem > /etc/swanctl/private/m-labs-intl.com
pki --pub --in /etc/swanctl/private/m-labs-intl.com --outform pem > /etc/swanctl/pubkey/m-labs-intl.com
cp /etc/swanctl/pubkey/m-labs-intl.com m-labs-intl.com # add it to the nixbld
systemctl enable strongswan --now
systemctl restart strongswan

# Set up website
cp m-labs-intl.com /etc/nginx/sites-available/
cp nginx.conf /etc/nginx/
ln -s /etc/nginx/sites-available/m-labs-intl.com /etc/nginx/sites-enabled/
systemctl enable nginx --now
service nginx restart

# Issue SSL certificate - website only, the mail is on the HK side
certbot --nginx
service nginx restart

# Create a user for automatic website deployment from nixbld
useradd -m zolaupd
mkdir -p /var/www/m-labs-intl.com/html
chown -R zolaupd /var/www/m-labs-intl.com/
sudo -u zolaupd sh -c '
  cd /home/zolaupd;
  mkdir /home/zolaupd/.ssh;
  echo -n "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIP1OJJM8g/1ffxDjN31XKEfGmrYaW03lwpyTa1UGWqVx
  ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF6R6XK0IiuAKxVKvSABm4m9bfOlvfJcMvTpjenuXUPv" > /home/zolaupd/.ssh/authorized_keys
  chmod 700 .ssh/
  chmod 600 .ssh/authorized_keys
  '

# Create a user for RFQ hooks service
useradd -m rfqserver
cp runrfq.sh /home/rfqserver/
cp mail.secret /home/rfqserver/
chown rfqserver /home/rfqserver/runrfq.sh
chmod +x /home/rfqserver/runrfq.sh
chown rfqserver /home/rfqserver/mail.secret

sudo -u rfqserver sh -c '
  cd /home/rfqserver;
  git clone https://git.m-labs.hk/M-Labs/web2019.git;
  cd web2019;
  python3 -m venv ./venv;
  source venv/bin/activate;
  pip install -r requirements.txt;
'
cp rfq.service /etc/systemd/system/

# Automate port forwarding rules creation
cp gretun.sh /root/gretun.sh
cp gretun_down.sh /root/gretun_down.sh
chmod u+x /root/gretun.sh
chmod u+x /root/gretun_down.sh
cp gretun.service /etc/systemd/system/

# Enable custom services
systemctl daemon-reload
systemctl enable rfq.service --now
systemctl enable gretun.service --now

# Setup basic firewall rules  
ufw default deny
ufw default allow outgoing

ufw allow from 94.190.212.123
ufw allow from 2001:470:f891:1::/64
ufw allow from 202.77.7.238
ufw allow from 2001:470:18:390::2
ufw allow "Nginx HTTP"
ufw allow "Nginx HTTPS"
ufw limit OpenSSH
ufw allow 25/tcp
ufw allow 587/tcp
ufw limit 500,4500/udp

ufw route allow in on gre1 out on eth0
ufw allow from 10.47.3.0/31

ufw show added
ufw enable