Fail2Ban
masscan
Fail2Ban | masscan | |
---|---|---|
49 | 64 | |
10,501 | 22,637 | |
2.2% | - | |
8.8 | 7.8 | |
4 days ago | about 2 months ago | |
Python | C | |
GNU General Public License v3.0 or later | GNU Affero General Public License v3.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
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
masscan
- Why so many bots?
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Mass Scanning
Can I get banned for mass scanning with https://github.com/robertdavidgraham/masscan or does it slow down any other vms from other persons?
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Has anyone ever had their homelab or network hacked? What happened?
Nope, this doesn't work any more. Shodan checks all ports (so any attackers using data from Shodan already know which ports you have open), and tools like masscan (https://github.com/robertdavidgraham/masscan) let you portscan the entire IPv4 address space in less than 10 minutes.
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Private server intruded
https://github.com/LogoiLab/mcsl https://github.com/robertdavidgraham/masscan
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My home server is frustrating me. Please help me, home server wizards.
Changing the default port does nothing for security. It only prevents some basic brute force or default password scripts. Anyone is able to scan for it in no time anyway (https://github.com/robertdavidgraham/masscan).
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Should I be Concerned?
But it should blow away the far-too-common belief that no-one's after you because you're not interesting enough. IPv4 is smaller than we think. It is not difficult to scan the entire ipv4 space in minutes. And every single one of those is going to knock your door on the way past.
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Ask HN: Looking for an Old Article
I'm not sure about the article, but the blazingly-fast IP scanner sounds a lot like Masscan. It can scan the entire Internet in 5 minutes and has received a lot of press: https://github.com/robertdavidgraham/masscan . https://rushter.com/blog/how-masscan-works/ is one of many articles about it.
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Is my Synology getting port-scanned?
Here's an except from the masscan docs:
- I was hit with ransomware in my Plex server and I'm not sure where it came from. Could a DMZ be the cause?
- PSA: Masscan has changed his IP. Please block the new one on your firewall! Its likely our vps reporting worked.
What are some alternatives?
crowdsec - CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.
RustScan - 🤖 The Modern Port Scanner 🤖
Suricata - Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.
zmap - ZMap is a fast single packet network scanner designed for Internet-wide network surveys.
Snort - Snort++
amass - In-depth attack surface mapping and asset discovery
Denyhosts - Automated host blocking from SSH brute force attacks
nuclei - Fast and customizable vulnerability scanner based on simple YAML based DSL.
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.
zgrab2-configurations - A repository for possible zgrab2 configurations
pfSense - Main repository for pfSense
mitmproxy - An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.