fwknop
nft-blackhole
| fwknop | nft-blackhole | |
|---|---|---|
| 10 | 2 | |
| 1,028 | 86 | |
| - | - | |
| 7.3 | 3.2 | |
| about 1 month ago | over 2 years ago | |
| Perl | Python | |
| GNU General Public License v3.0 only | MIT License |
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.
fwknop
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Fail2ban Sucks
sounds fun; i see the arch aur has a few options as well. have you tried https://www.cipherdyne.org/fwknop/ ?
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Has anyone ever had their homelab or network hacked? What happened?
Yes that's the basic idea, i tried to use fwknop first but it didn't do what i wanted it to do so i made my own
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How to securely enable SSH access to my home network?
Port knocking. Or better yet FWKNOP. I'm disappointed I don't hear people talk about it more. The port isn't even open until you give the secret combination of knocks on a large number of ports. There's much more to it. I recommend listening to Episode 865 ofSecurity Now.
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Show HN: Knockles – eBPF Port Knocking Tool
> Is this approach used elsewhere?
Yes, or at least in a similar fashion. An alternative variant of port knocking is SPA (Single Packet Authorization). Often SPA protocols use UDP and contain within the body field an encrypted payload containing all the required data to authenticate and authorize a particular request.
There are multiple different implementations of SPA: OpenSPA [1] (full disclosure: I am the author of OpenSPA), fwknop [2] just to name a few.
SDP (Software Defined Perimeter) often builds upon SPA technologies in order to achieve a form of zero trust access.
[1] - https://github.com/greenstatic/openspa
[2] - https://github.com/mrash/fwknop
I am currently re-writting the OpenSPA protocol (version 2) and I plan on playing around with eBPF as well, so thanks eeriedusk for paving the way :)
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Blocking SSH Bot Net Attack
As an alternative to port knocking, there is: https://github.com/mrash/fwknop
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Start VPN server based on external trigger
fwknop is nice and simple
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UFW setup for decent security
Sure, few links for when you dig in: http://iplists.firehol.org/, https://crowdsec.net/, https://www.zeroflux.org/projects/knock/, https://www.cipherdyne.org/fwknop/
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Who's Attacking My Server?
An upgrade to port knocking is Single Packet Authorization [1]. It doesn’t suffer from the observability, and other, problems of port knocking.
[1] https://www.cipherdyne.org/fwknop/
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How Self Hosting (and password reuse) led to the compromise of Linked In, Dropbox, & more.
Or keep the port closed like I do with my ssh port and use fwknop to open the port only when needed.
nft-blackhole
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Who's Attacking My Server?
Looks not-so reliable. Either fetches a list of blocks from https://github.com/herrbischoff/country-ip-blocks which is a random GitHub repository that collects "straight from the Regional Internet Registries" without any stating any sources nor method for gathering it (which also, I'm assuming, is self-reported data from those registries), or it fetches it from https://www.ipdeny.com/ which currently runs with an expired TLS certificate, which on top of everything, nft-blackhole ignores any issues with certificates anyways, leaving it wide open to MITM attacks (https://github.com/tomasz-c/nft-blackhole/blob/8a656ac0a803a...)
I wouldn't run that if I'd want something to reliably block someone from a specific country.
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Best Practices for Securing SSH
As sad as it makes me, blocking large parts of the world that you don't expect to connect from via a list of CIDR blocks is an incredibly effective way to secure anything and reduce logspam.
I personally use nft blackhole [1], which I can recommend for its ease of use.
[1] https://github.com/tomasz-c/nft-blackhole
What are some alternatives?
pfSense - Main repository for pfSense
country-ip-blocks - CIDR country-level IP data, straight from the Regional Internet Registries, updated hourly. This is a read-only mirror.
Fail2Ban - Daemon to ban hosts that cause multiple authentication errors
SSHHeatmap - Generates a heatmap of IP's that made failed SSH login attempts.
OSQuery - SQL powered operating system instrumentation, monitoring, and analytics.
crowdsec - CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.
autoVPN - Create On Demand Disposable OpenVPN Endpoints on AWS.
IP2Location-PHP-Module - This module is a PHP module that enables the user to find the country, region, city, coordinates, zip code, ISP, domain name, timezone, connection speed, IDD code, area code, weather station code, weather station name, mobile, usage types, address type, IAB category, etc that any IP address or host name originates from.
masscan - TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.
Glastopf - Web Application Honeypot
pam_shield - [INACTIVE] A PAM module to automatically block IP addresses which try brute-force password guessing.