Sure, its using SSH keys, but its using the keys of another host, meaning if you compromise root on one system then you get immediate root access over SSH to the other. On one hand, this project's goals was for the average joe to be able to easily use HTTPS for their incoming websites; not become a network security specialist. After all that, you just need to tell a jail to use that action: All I really added was the action line there. privacy statement. So why not make the failregex scan al log files including fallback*.log only for Client.. Press J to jump to the feed. The one thing I didnt really explain is the actionflush line, which is defines in iptables-common.conf. My switch was from the jlesage fork to yours. I have configured the fail2ban service - which is located at the webserver - to read the right entrys of my log to get the outsiders IP and blocks it. @hugalafutro I tried that approach and it works. Dashboard View I'd suggest blocking up ranges for china/Russia/India/ and Brazil. Asking for help, clarification, or responding to other answers. This will let you block connections before they hit your self hosted services. bantime = 360 findtime = 60, NOTE: for docker to ban port need to use single port and option iptables -m conntrack --ctorigdstport --ctdir ORIGINAL, my personal opinion nginx-proxy-manager should be ONLY nginx-proxy-manager ; as with docker concept fail2ban and etc, etc, you can have as separate containers; better to have one good nginx-proxy-manager without mixing; jc21/nginx-proxy-manager made nice job. I am behind Cloudflare and they actively protect against DoS, right? Your tutorial was great! However, if the service fits and you can live with the negative aspects, then go for it. If fail to ban blocks them nginx will never proxy them. in fail2ban's docker-compose.yml mount npm log directory as read only like so: then create data/filter.d/npm-docker.conf with contents: then create data/jail.d/npm-docker.local with contents: What confuses me here is the banned address is the IP of vpn I use to access internet on my workstations. But if you take the example of someone also running an SSH server, you may also want fail2ban on it. Looking at the logs, it makes sense, because my public IP is now what NPM is using to make the decision, and that's not a Cloudflare IP. I used to have all these on the same vm and it worked then, later I moved n-p-m to vm where my mail server is, and the vm with nextcloud and ha and other stuff is being tunelled via mullvad and everything still seems to work. Note that most jails dont define their own actions, and this is the global one: So all I had to do was just take this part from the top of the file, and drop it down. That way you don't end up blocking cloudflare. When a proxy is internet facing, is the below the correct way to ban? These filter files will specify the patterns to look for within the Nginx logs. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. Now that NginX Proxy Manager is up and running, let's setup a site. #, action = proxy-iptables[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"], iptables-multiport[name=%(__name__)s, port="%(port)s", protocol="%(protocol)s", chain="%(chain)s"], Fail2Ban Behind a Reverse Proxy: The Almost-Correct Way, A Professional Amateur Develops Color Film, Reject or drop the packet, maybe with extra options for how. Hello, on host can be configured with geoip2 , stream I have read it could be possible, how? Authelia itself doesnt require a LDAP server or its own mysql database, it can use built in single file equivalents just fine for small personal installations. real_ip_header CF-Connecting-IP; hope this can be useful. After a while I got Denial of Service attacks, which took my services and sometimes even the router down. If youve ever done some proxying and see Fail2Ban complaining that a host is already banned, this is one cause. I've tried both, and both work, so not sure which is the "most" correct. What's the best 2FA / fail2ban with a reverse proxy : r/unRAID We now have to add the filters for the jails that we have created. Ive been victim of attackers, what would be the steps to kick them out? Yes, you can use fail2ban with anything that produces a log file. But at the end of the day, its working. Hi @posta246 , Yes my fail2ban is not installed directly on the container, I used it inside a docker-container and forwarded ip ban rules to docker chains. Fail2ban does not update the iptables. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. For most people on here that use Cloudflare it's simply a convenience that offers a lot of functionality for free at the cost of them potentially collecting any data that you send through it. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time, although any arbitrary other action (e.g. Because how my system is set up, Im SSHing as root which is usually not recommended. Create an account to follow your favorite communities and start taking part in conversations. The first idea of using Cloudflare worked. Yep. What I really need is some way for Fail2Ban to manage its ban list, effectively, remotely. Proxying Site Traffic with NginX Proxy Manager. The only issue is that docker sort of bypasses all iptables entries, fail2ban makes the entry but those are ignored by docker, resulting in having the correct rule in iptables or ufw, but not actually blocking the IP. To this extent, I might see about creating another user with no permissions except for iptables. Will removing "cloudflare-apiv4" from the config and foregoing the cloudflare specific action.d file run fine? Fail2ban is a daemon to ban hosts that cause multiple authentication errors.. Install/Setup. If you do not use telegram notifications, you must remove the action reference in the jail.local as well as action.d scripts. So as you see, implementing fail2ban in NPM may not be the right place. An action is usually simple. It is a few months out of date. First, create a new jail: [nginx-proxy] enabled = true port = http logpath = % Learn more about Stack Overflow the company, and our products. I believe I have configured my firewall appropriately to drop any non-cloudflare external ips, but I just want a simple way to test that belief. They can and will hack you no matter whether you use Cloudflare or not. so even in your example above, NPM could still be the primary and only directly exposed service! The inspiration for and some of the implementation details of these additional jails came from here and here. So I assume you don't have docker installed or you do not use the host network for the fail2ban container. https://www.fail2ban.org/wiki/index.php/Main_Page, https://forums.unraid.net/topic/76460-support-djoss-nginx-proxy-manager/, https://github.com/crazy-max/docker-fail2ban, https://www.the-lazy-dev.com/en/install-fail2ban-with-docker/, "iptables: No chain/target/match by that name", fail2ban with docker(host mode networking) is making iptables entry but not stopping connections, Malware Sites access from Nginx Proxy Manager, https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html, https://www.home-assistant.io/integrations/http/#trusted_proxies, in /etc/docker/daemon.json - you need to add option "iptables": true, you need to be sure docker create chain in iptables DOCKER-USER, for fail2ban ( docker port ) use SINGLE PORT ONLY - custom. The card will likely have a 0, and the view will be empty, or should, so we need to add a new host. Nothing helps, I am not sure why, and I dont see any errors that why is F2B unable to update the iptables rules. Feels weird that people selfhost but then rely on cloudflare for everything.. Who says that we can't do stuff without Cloudflare? As currently set up I'm using nginx Proxy Manager with nginx in Docker containers. If the value includes the $query_string variable, then an attack that sends random query strings can cause excessive caching. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. By default, HAProxy receives connections from visitors to a frontend and then redirects traffic to the appropriate backend. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. In order for this to be useful for an Nginx installation, password authentication must be implemented for at least a subset of When operating a web server, it is important to implement security measures to protect your site and users. The only workaround I know for nginx to handle this is to work on tcp level. This can be due to service crashes, network errors, configuration issues, and more. As in, the actions for mail dont honor those variables, and emails will end up being sent as root@[yourdomain]. Premium CPU-Optimized Droplets are now available. It is ideal to set this to a long enough time to be disruptive to a malicious actors efforts, while short enough to allow legitimate users to rectify mistakes. In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? Additionally, how did you view the status of the fail2ban jails? In my opinion, no one can protect against nation state actors or big companies that may allied with those agencies. First, create a new jail: This jail will monitor Nginxs error log and perform the actions defined below: The ban action will take the IP address that matches the jail rules (based on max retry and findtime), prefix it with deny, and add it to the deny.conf file. There's talk about security, but I've worked for multi million dollar companies with massive amounts of sensitive customer data, used by government agencies and never once have we been hacked or had any suspicious attempts to gain access. This one mixes too many things together. @jc21 I guess I should have specified that I was referring to the docker container linked in the first post (unRAID). @dariusateik the other side of docker containers is to make deployment easy. However, any publicly accessible password prompt is likely to attract brute force attempts from malicious users and bots. I followed the above linked blog and (on the second attempt) got the fail2ban container running and detecting my logs, but I do get an error which (I'm assuming) actually blocks any of the ban behavior from taking effect: f2b | 2023-01-28T16:41:28.094008433Z 2023-01-28 11:41:28,093 fail2ban.actions [1]: ERROR Failed to execute ban jail 'npm-general-forceful-browsing' action 'action-ban-docker-forceful-browsing' info 'ActionInfo({'ip': '75.225.129.88', 'family': 'inet4', 'fid': at 0x7f0d4ec48820>, 'raw-ticket': at 0x7f0d4ec48ee0>})': Error banning 75.225.129.88. How would I easily check if my server is setup to only allow cloudflare ips? Using Fail2ban behind a proxy requires additional configuration to block the IP address of offenders. This varies based on your Linux distribution, but for most people, if you look in /etc/apache2, you should be able to search to find the line:. Today's video is sponsored by Linode!Sign up today and get a $100 60-day credit on your new Linode account, link is in the description. https://dbte.ch/linode/=========================================/This video assumes that you already use Nginx Proxy Manager and Cloudflare for your self-hosting.Fail2ban scans log files (e.g. If you wish to apply this to all sections, add it to your default code block. WebFail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. In NPM Edit Proxy Host added the following for real IP behind Cloudflare in Custom Nginx Configuration: Not exposing anything and only using VPN. We are not affiliated with GitHub, Inc. or with any developers who use GitHub for their projects. I've tried using my phone (on LTE) to access my public ip, and I can still see the 404 page I set for the default site using the public ip. The problem is that when i access my web services with an outside IP, for example like 99.99.99.99, my nginx proxy takes that request, wraps its own ip around it, for example 192.168.0.1, and then sends it to my webserver. Same for me, would be really great if it could added. I would also like to vote for adding this when your bandwidth allows. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. "/action.d/action-ban-docker-forceful-browsing.conf" - took me some time before I realized it. Description. Use the "Global API Key" available from https://dash.cloudflare.com/profile/api-tokens. Check out our offerings for compute, storage, networking, and managed databases. Set up fail2ban on the host running your nginx proxy manager. The typical Internet bots probing your stuff and a few threat actors that actively search for weak spots. You can see all of your enabled jails by using the fail2ban-client command: You should see a list of all of the jails you enabled: You can look at iptables to see that fail2ban has modified your firewall rules to create a framework for banning clients. Big thing if you implement f2b, make sure it will pay attention to the forwarded-for IP. We can add an [nginx-noproxy] jail to match these requests: When you are finished making the modifications you need, save and close the file. I understand that there are malicious people out there and there are users who want to protect themselves, but is f2b the only way for them to do this? Note: theres probably a more elegant way to accomplish this. All rights belong to their respective owners. I've got a few things running behind nginx proxy manager and they all work because the basic http (s)://IP:port request locally auto loads the desired location. The steps outlined here make many assumptions about both your operating environment and Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? actionunban = -D f2b- -s -j https://www.authelia.com/ Theres a number of actions that Fail2Ban can trigger, but most of them are localized to the local machine (plus maybe some reporting). I cant find any information about what is exactly noproxy? HAProxy is performing TLS termination and then communicating with the web server with HTTP. Hi, sorry me if I dont understand:( I've tried to add the config file outside the container, fail2ban is running but seems to not catch the bad ip, i've tried your rules with fail2ban-regex too but I noted: SUMMARY: it works, using the suggested config outside the container, on the host. Secure Your Self Hosting with Fail2Ban + Nginx Proxy Manager + CloudFlare 16,187 views Jan 20, 2022 Today's video is sponsored by Linode! Fail2Ban runs as root on this system, meaning I added roots SSH key to the authorized_keys of the proxy hosts user with iptables access, so that one can SSH into the other. At what point of what we watch as the MCU movies the branching started? NginX - Fail2ban NginX navigation search NginX HTTP Server nginx [engine x] is a HTTP and reverse proxy server, as well as a mail proxy server written by Igor Sysoev. If not, you can install Nginx from Ubuntus default repositories using apt. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. Protecting your web sites and applications with firewall policies and restricting access to certain areas with password authentication is a great starting point to securing your system. Then the services got bigger and attracted my family and friends. To learn how to set up a user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04. Sign up for Infrastructure as a Newsletter. I've got a question about using a bruteforce protection service behind an nginx proxy. Some people have gone overkill, having Fail2Ban run the ban and do something like insert a row into a central SQL database, that other hosts check every minute or so to send ban or unban requests to their local Fail2Ban. But with nginx-proxy-manager the primary attack vector in to someones network iswellnginx-proxy-manager! to your account, Please consider fail2ban Finally I am able to ban Ip using fail2ban-docker, npm-docker and emby-docker. I've been hoping to use fail2ban with my npm docker compose set-up. If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Now i've configured fail2ban on my webserver which is behind the proxy correctly (it can detect the right IP adress and bans it) but I can still access the web service with my banned IP. Have you correctly bind mounted your logs from NPM into the fail2ban container? Once these are set, run the docker compose and check if the container is up and running or not. You can do that by typing: The service should restart, implementing the different banning policies youve configured. Your browser does not support the HTML5
