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https://github.com/bashclub/proxmox-zfs-postinstall.git
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Add smtp config
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79
postinstall
79
postinstall
@ -19,7 +19,6 @@
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# + Install bashclub-zsync
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# + Create zfspool storage for swap disks if not exists
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# + Adjust default volblocksize for Proxmox zfspool storages
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# - Configure swap file
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# - Configure proxmox mail delivery with postfix
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#
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#
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@ -360,23 +359,77 @@ pve_conf_backup(){
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}
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harden_ssh(){
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rm /etc/ssh/ssh_host_*
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ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""
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ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""
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awk '$5 >= 3071' /etc/ssh/moduli > /etc/ssh/moduli.safe
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mv /etc/ssh/moduli.safe /etc/ssh/moduli
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if [ $ssh_hardening -gt 0 ]; then
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rm /etc/ssh/ssh_host_*
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ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""
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ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""
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awk '$5 >= 3071' /etc/ssh/moduli > /etc/ssh/moduli.safe
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mv /etc/ssh/moduli.safe /etc/ssh/moduli
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if [[ $VERSION_CODENAME == "bookworm" ]]; then
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echo -e "\n# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\nHostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-256-cert-v01@openssh.com" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf
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elif [[ $VERSION_CODENAME == "bullseye" ]]; then
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sed -i 's/^\#HostKey \/etc\/ssh\/ssh_host_\(rsa\|ed25519\)_key$/HostKey \/etc\/ssh\/ssh_host_\1_key/g' /etc/ssh/sshd_config
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echo -e echo -e "\n# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\nHostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf
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if [[ $VERSION_CODENAME == "bookworm" ]]; then
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echo -e "\n# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,gss-curve25519-sha256-,diffie-hellman-group16-sha512,gss-group16-sha512-,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\nHostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-512,rsa-sha2-512-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-256-cert-v01@openssh.com" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf
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elif [[ $VERSION_CODENAME == "bullseye" ]]; then
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sed -i 's/^\#HostKey \/etc\/ssh\/ssh_host_\(rsa\|ed25519\)_key$/HostKey \/etc\/ssh\/ssh_host_\1_key/g' /etc/ssh/sshd_config
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echo -e echo -e "\n# Restrict key exchange, cipher, and MAC algorithms, as per sshaudit.com\n# hardening guide.\nKexAlgorithms curve25519-sha256,curve25519-sha256@libssh.org,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha256\nCiphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr\nMACs hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,umac-128-etm@openssh.com\nHostKeyAlgorithms ssh-ed25519,ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,sk-ssh-ed25519-cert-v01@openssh.com,rsa-sha2-256,rsa-sha2-512,rsa-sha2-256-cert-v01@openssh.com,rsa-sha2-512-cert-v01@openssh.com" > /etc/ssh/sshd_config.d/ssh-audit_hardening.conf
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fi
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systemctl restart ssh.service
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fi
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systemctl restart ssh.service
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}
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set_mail_delivery(){
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echo ""
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cat << EOF > /etc/postfix/main.cf
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myhostname=$(hostname -f)
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smtpd_banner = \$myhostname ESMTP \$mail_name (Debian/GNU)
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biff = no
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append_dot_mydomain = no
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alias_maps = hash:/etc/aliases
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alias_database = hash:/etc/aliases
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mydestination = \$myhostname, localhost.\$mydomain, localhost
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mynetworks = 127.0.0.0/8
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inet_interfaces = loopback-only
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recipient_delimiter = +
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compatibility_level = 2
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#### sasl extension
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relayhost = [$smtphost]:$smtpport
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smtp_tls_CAfile = /etc/postfix/cacert.pem
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smtp_use_tls = yes
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sender_canonical_classes = envelope_sender, header_sender
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sender_canonical_maps = regexp:/etc/postfix/sender_canonical_maps
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smtp_header_checks = regexp:/etc/postfix/header_check
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EOF
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cat << EOF > /etc/postfix/header_check
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/From:.*/ REPLACE From: $displayname <$senderaddress>
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EOF
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cat << EOF > /etc/postfix/sender_canonical_maps
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/.+/ $displayname <$senderaddress>
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EOF
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if [ $smtpauth -gt 0 ]; then
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cat << EOF > /etc/postfix/sasl_passwd
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[$smtphost]:$smtpport $username:$password
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EOF
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postmap /etc/postfix/sasl_passwd
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postmap /etc/aliases
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chown root:root /etc/postfix/sasl_passwd
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chown root:root /etc/postfix/sasl_passwd.db
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chmod 0600 /etc/postfix/sasl_passwd
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chmod 0600 /etc/postfix/sasl_passwd.db
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cat << EOF >> /etc/postfix/main.cf
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smtp_sasl_auth_enable = yes
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smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
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smtp_sasl_security_options = noanonymous
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EOF
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fi
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ln -sf /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/postfix/cacert.pem
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systemctl restart postfix.service
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pvesh set access/users/root@pam -email $recipientaddress
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}
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create_swap_pool(){
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