anti
65d585569b
Cowrie was exposing an SSH daemon on port 22 alongside the telnet service even when COWRIE_SSH_ENABLED=false, contaminating deployments that did not request an SSH service. New implementation mirrors the SSH service pattern: - busybox telnetd in foreground mode on port 23 - /bin/login for real PAM authentication (brute-force attempts logged) - rsyslog RFC 5424 bridge piped to stdout for Docker log capture - Configurable root password and hostname via env vars - No Cowrie dependency
41 lines
931 B
Bash
41 lines
931 B
Bash
#!/bin/bash
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set -e
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# Configure root password (default: admin)
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ROOT_PASSWORD="${TELNET_ROOT_PASSWORD:-admin}"
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echo "root:${ROOT_PASSWORD}" | chpasswd
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# Optional: override hostname inside container
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if [ -n "$TELNET_HOSTNAME" ]; then
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echo "$TELNET_HOSTNAME" > /etc/hostname
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hostname "$TELNET_HOSTNAME"
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fi
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# Fake bash history so the box looks used
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if [ ! -f /root/.bash_history ]; then
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cat > /root/.bash_history <<'HIST'
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apt update && apt upgrade -y
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systemctl status mysql
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tail -f /var/log/syslog
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df -h
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ps aux
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cd /root/scripts
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bash backup.sh
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crontab -e
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ls /root/backups
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cat /root/.env
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HIST
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fi
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# Logging pipeline: named pipe → rsyslogd (RFC 5424) → stdout
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mkfifo /var/run/decnet-logs
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# Relay pipe to stdout so Docker captures all syslog events
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cat /var/run/decnet-logs &
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# Start rsyslog
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rsyslogd
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# busybox telnetd: foreground mode, real /bin/login for PAM auth logging
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exec busybox telnetd -F -l /bin/login -p 23
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