51 lines
1.1 KiB
Bash
Executable File
51 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
TOKEN="8101319618:AAHboFVVgmLPccJB0MDr_R2g0K90hkGqkRw"
|
|
CHAT_ID="581059353"
|
|
|
|
PIS=("192.168.178.2" "192.168.178.3" "localhost")
|
|
|
|
STATE_FILE="/home/kai/.ssh-monitor-lastcheck"
|
|
|
|
if [ ! -f "$STATE_FILE" ]; then
|
|
date --iso-8601=seconds > "$STATE_FILE"
|
|
fi
|
|
|
|
LAST_CHECK=$(cat "$STATE_FILE")
|
|
NOW=$(date --iso-8601=seconds)
|
|
|
|
for PI in "${PIS[@]}"
|
|
do
|
|
if [ "$PI" == "localhost" ]; then
|
|
LOG=$(journalctl -u ssh --since "$LAST_CHECK" --no-pager)
|
|
HOST=$(hostname)
|
|
else
|
|
LOG=$(ssh -o ConnectTimeout=5 kai@$PI \
|
|
"journalctl -u ssh --since \"$LAST_CHECK\" --no-pager")
|
|
|
|
HOST=$(ssh kai@$PI hostname)
|
|
fi
|
|
|
|
FAILS=$(echo "$LOG" | grep "Failed password" | wc -l)
|
|
|
|
if [ "$FAILS" -gt 0 ]; then
|
|
|
|
IPS=$(echo "$LOG" | grep "Failed password" \
|
|
| awk '{print $(NF-3)}' \
|
|
| sort | uniq -c | sort -nr)
|
|
|
|
MESSAGE="🚨 SSH Angriff erkannt!
|
|
Host: $HOST ($PI)
|
|
Fehlversuche: $FAILS
|
|
|
|
Top Angreifer:
|
|
$IPS"
|
|
|
|
curl -s -X POST "https://api.telegram.org/bot$TOKEN/sendMessage" \
|
|
-d chat_id="$CHAT_ID" \
|
|
-d text="$MESSAGE"
|
|
fi
|
|
done
|
|
|
|
echo "$NOW" > "$STATE_FILE"
|