Kippo
endlessh
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Kippo
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Session recording for Tailscale SSH in beta
In the old days I played with something like this: https://github.com/desaster/kippo
But a more modern alternative seems to be the container based approach outlined here. https://lwn.net/Articles/848291/
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Any app out there to trap port scanners?
You could set up a honeypot such as https://github.com/desaster/kippo but that is not really going to "trap" or "bully" anyone. You're better off just properly securing your network and not trying to poke the hornet's nest
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Honeypot
You could run your ssh server on a different port and run kippo on port 22.
- desaster/kippo - Kippo - SSH Honeypot
endlessh
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Why so many bots?
You can reduce the noise a lot by moving ssh to a non standard port. Security through obscurity isn't actually security, but it will reduce the number of attempts you receive. Another thing I like to do is put Endlessh on the standard port 22. That way as bots go by they will get stuck or at least slow down on that connection.
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Is SSH secure enough?
SSH tarpit with Endlessh and for the hidden SSH: auth with both a key files (that need unlocking and is on the computer) AND an One Time Password on my phone.
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"Failed password for root" SSH login hacking attemp?
If you change the ssh port, install https://github.com/skeeto/endlessh to slow down the attackers
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ChatGPT doxes itself
Even this requires you to successfully guess the username and password correctly, and if it's just not the default most people won't bother brute forcing further. Sidenote: you can use endlessh on a computer and port forward port 22 to trap scanners that scan the entire internet for open ssh ports to exploit.
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Ssh brute force attack with fail2ban.
The fun way is moving your ssh port somewhere else and installing endlessh to f the bots.
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Security for your Homeserver
Such as endlessh
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Keep it tight everyone! This is a day of sshd logs from a proxy server in China pinging my SSH server and trying every username imaginable. Does anyone have any tips to increase security?
But, as a prank to Chinese hackers, what I did on my system was to run endless ssh. It keeps the ssh client busy as it slowly sends the ssh banner. I modified the code to send strings like:
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VPN to remotely access dockerized services
For hardening: I use lynis for some guidance, the VPS runs rkhunter, AIDE and other things nightly and mails me the reports, fail2ban manages the SSH port, having SSH on a custom port helps to keep things quiet. If you're into these kind of things, have a look at the Endlessh tarpit to learn about login attempts on port 22 on your machine - I found it eye-opening.
- Any app out there to trap port scanners?
- Mein Server wird für Bruteforce Attacken genutzt, was kann ich tun?
What are some alternatives?
OSSEC - OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response.
opencanary - Modular and decentralised honeypot
Fail2Ban - Daemon to ban hosts that cause multiple authentication errors
sshesame - An easy to set up and use SSH honeypot, a fake SSH server that lets anyone in and logs their activity
Glastopf - Web Application Honeypot
cowrie - Cowrie SSH/Telnet Honeypot https://cowrie.readthedocs.io
pfSense - Main repository for pfSense
docker-swag - Nginx webserver and reverse proxy with php support and a built-in Certbot (Let's Encrypt) client. It also contains fail2ban for intrusion prevention.
Wazuh - Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.
minerstat-os - msOS - Open Source Mining OS. Repository moved, no longer using github
Snort - Snort++
geoip-blocking-w-firewalld - Block unwanted countries IPv4 & IPv6 ranges with firewalld using ipdeny.com