68 lines
2.8 KiB
Bash
68 lines
2.8 KiB
Bash
#!/bin/bash
|
||
# SPDX-Version: 3.0
|
||
# SPDX-CreationInfo: 2025-05-05; WEIDNER, Marc S.; <msw@coresecret.dev>
|
||
# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.live.builder.git
|
||
# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
|
||
# SPDX-FileCopyrightText: 2024–2025; WEIDNER, Marc S.; <msw@coresecret.dev>
|
||
# SPDX-FileType: SOURCE
|
||
# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
|
||
# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
|
||
# SPDX-PackageName: CISS.debian.live.builder
|
||
# SPDX-Security-Contact: security@coresecret.eu
|
||
set -C -e -u -o pipefail
|
||
|
||
printf "\e[95m++++ ++++ ++++ ++++ ++++ ++++ ++ 🧪 '%s' starting ... \e[0m\n" "${0}"
|
||
# sleep 1
|
||
|
||
declare -r UFW_OUT_POLICY="deny"
|
||
declare -r SSHPORT="MUST_BE_SET"
|
||
|
||
ufw --force reset
|
||
|
||
ufw logging medium
|
||
|
||
ufw default deny incoming
|
||
|
||
ufw default "${UFW_OUT_POLICY}" outgoing
|
||
|
||
ufw default deny forward
|
||
|
||
ufw allow in "${SSHPORT}"/tcp comment 'Incoming SSH (Custom-Port)'
|
||
|
||
ufw limit "${SSHPORT}"/tcp comment 'Rate-Limit for SSH (Custom-Port)'
|
||
|
||
if [[ ${UFW_OUT_POLICY,,} == "deny" ]]; then
|
||
ufw allow out 21/tcp comment 'Outgoing FTP'
|
||
ufw allow out 22/tcp comment 'Outgoing SSH'
|
||
ufw allow out 25/tcp comment 'Outgoing SMTP'
|
||
ufw allow out 53/tcp comment 'Outgoing DNS'
|
||
ufw allow out 80/tcp comment 'Outgoing HTTP'
|
||
ufw allow out 123/tcp comment 'Outgoing NTP'
|
||
ufw allow out 143/tcp comment 'Outgoing IMAP'
|
||
ufw allow out 443/tcp comment 'Outgoing HTTPS'
|
||
ufw allow out 465/tcp comment 'Outgoing SMTPS'
|
||
ufw allow out 587/tcp comment 'Outgoing SMTPS'
|
||
ufw allow out 993/tcp comment 'Outgoing IMAPS'
|
||
ufw allow out 4460/tcp comment 'Outgoing NTS'
|
||
ufw allow out "${SSHPORT}"/tcp comment 'Outgoing SSH (Custom-Port)'
|
||
ufw allow out 53/udp comment 'Outgoing DNS'
|
||
ufw allow out 123/udp comment 'Outgoing NTP'
|
||
ufw allow out 443/udp comment 'Outgoing QUIC'
|
||
ufw allow out 853/udp comment 'Outgoing DoQ'
|
||
fi
|
||
|
||
sed -i "/# ok icmp code for FORWARD/i \# ok icmp codes for OUTPUT" /etc/ufw/before.rules
|
||
sed -i "/# ok icmp code for FORWARD/i \-A ufw-before-output -p icmp --icmp-type destination-unreachable -j ACCEPT" /etc/ufw/before.rules
|
||
sed -i "/# ok icmp code for FORWARD/i \-A ufw-before-output -p icmp --icmp-type time-exceeded -j ACCEPT" /etc/ufw/before.rules
|
||
sed -i "/# ok icmp code for FORWARD/i \-A ufw-before-output -p icmp --icmp-type parameter-problem -j ACCEPT" /etc/ufw/before.rules
|
||
sed -i "/# ok icmp code for FORWARD/i \-A ufw-before-output -p icmp --icmp-type echo-request -j ACCEPT" /etc/ufw/before.rules
|
||
|
||
sed -i 's/^ENABLED=no/ENABLED=yes/' /etc/ufw/ufw.conf
|
||
ln -sf /lib/systemd/system/ufw.service /etc/systemd/system/multi-user.target.wants/ufw.service
|
||
|
||
printf "\e[92m++++ ++++ ++++ ++++ ++++ ++++ ++ ✅ '%s' applied successfully. \e[0m\n" "${0}"
|
||
# sleep 1
|
||
|
||
exit 0
|
||
# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
|