Files
DECNET/templates/telnet/entrypoint.sh
anti 8dd4c78b33 refactor: strip DECNET tokens from container-visible surface
Rename the container-side logging module decnet_logging → syslog_bridge
(canonical at templates/syslog_bridge.py, synced into each template by
the deployer). Drop the stale per-template copies; setuptools find was
picking them up anyway. Swap useradd/USER/chown "decnet" for "logrelay"
so no obvious token appears in the rendered container image.

Apply the same cloaking pattern to the telnet template that SSH got:
syslog pipe moves to /run/systemd/journal/syslog-relay and the relay
is cat'd via exec -a "systemd-journal-fwd". rsyslog.d conf rename
99-decnet.conf → 50-journal-forward.conf. SSH capture script:
/var/decnet/captured → /var/lib/systemd/coredump (real systemd path),
logger tag decnet-capture → systemd-journal. Compose volume updated
to match the new in-container quarantine path.

SD element ID shifts decnet@55555 → relay@55555; synced across
collector, parser, sniffer, prober, formatter, tests, and docs so the
host-side pipeline still matches what containers emit.
2026-04-17 22:57:53 -04:00

44 lines
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Bash

#!/bin/bash
set -e
# Configure root password (default: admin)
ROOT_PASSWORD="${TELNET_ROOT_PASSWORD:-admin}"
echo "root:${ROOT_PASSWORD}" | chpasswd
# Optional: override hostname inside container
if [ -n "$TELNET_HOSTNAME" ]; then
echo "$TELNET_HOSTNAME" > /etc/hostname
hostname "$TELNET_HOSTNAME"
fi
# Fake bash history so the box looks used
if [ ! -f /root/.bash_history ]; then
cat > /root/.bash_history <<'HIST'
apt update && apt upgrade -y
systemctl status mysql
tail -f /var/log/syslog
df -h
ps aux
cd /root/scripts
bash backup.sh
crontab -e
ls /root/backups
cat /root/.env
HIST
fi
# Logging pipeline: named pipe → rsyslogd (RFC 5424) → stdout.
# Cloak the pipe path and the relay `cat` so `ps aux` / `ls /run` don't
# betray the honeypot — see ssh/entrypoint.sh for the same pattern.
mkdir -p /run/systemd/journal
rm -f /run/systemd/journal/syslog-relay
mkfifo /run/systemd/journal/syslog-relay
bash -c 'exec -a "systemd-journal-fwd" cat /run/systemd/journal/syslog-relay' &
# Start rsyslog
rsyslogd
# busybox telnetd: foreground mode, real /bin/login for PAM auth logging
exec busybox telnetd -F -l /bin/login -p 23