dechainy
Fail2Ban
| dechainy | Fail2Ban | |
|---|---|---|
| 1 | 49 | |
| 24 | 10,553 | |
| - | 3.4% | |
| 2.6 | 8.8 | |
| almost 2 years ago | 8 days ago | |
| Python | Python | |
| Apache License 2.0 | GNU General Public License v2.0 or later |
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dechainy
Fail2Ban
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Looking for a way to remote in to K's of raspberry pi's...
now some things you need to think about: - cloud init - this will need to be secure so lock it down hard anything not needed an alternative OS to look at if you have the ability's is https://www.alpinelinux.org/ also as these devices are not that powerfull every extra agent / abstaction layer you add impacts performance need to look at low over head security https://www.crowdsec.net/ and https://github.com/fail2ban/fail2ban (if you call fail2ban security) - using certificates to authenticate ssh login
- Fail2Ban
- Fail2Ban – Daemon to ban hosts that cause multiple authentication errors
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I am (to be) a web designer, how to ensure security on a vps?
See https://github.com/fail2ban/fail2ban for beginner's guide, basically you set it up to monitor logfiles and it would act accordingly (plenty of built-in config to handle various daemons so you don't have to write yourself).
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Home Lab Setup Recommendations
- Nginx & crowdsec/fail2ban if you are exposing your parts (services) to the public ( https://hub.docker.com/r/baudneo/nginx-proxy-manager, https://www.crowdsec.net, https://www.fail2ban.org )
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fail2ban not notifying Cloudflare
— In /etc/fail2ban/action.d/cloudflare.conf I copied the file from https://github.com/fail2ban/fail2ban/blob/master/config/action.d/cloudflare.confand added my ‘cftoken’ and ‘cfuser’ on the bottom
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Firewall rules beyond "deny incoming, enable only the ports that you need"
https://github.com/fail2ban/fail2ban is a mature, easy to set up way to have some dynamic firewall rules that respond to attacks. There are more sophisticated options, but they are probably not worth the return on time investment for you.
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Comments/Suggestions on security-auditing different services
You can create your own regexes for custom services: https://github.com/fail2ban/fail2ban/wiki/Developing-Regex-in-Fail2ban
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Fail2Ban Limitation
Others seem to be (or were) experiencing this too: https://github.com/fail2ban/fail2ban/issues/3100
What are some alternatives?
aya - Aya is an eBPF library for the Rust programming language, built with a focus on developer experience and operability.
crowdsec - CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.
vmlinux-to-elf - A tool to recover a fully analyzable .ELF from a raw kernel, through extracting the kernel symbol table (kallsyms)
Suricata - Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.
psutil - Cross-platform lib for process and system monitoring in Python
Snort - Snort++
liquorix-package - Liquorix Debian Package
Denyhosts - Automated host blocking from SSH brute force attacks
tcpdog - eBPF based TCP observability.
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.
cilium - eBPF-based Networking, Security, and Observability
pfSense - Main repository for pfSense