To get started, we need to adjust the configuration file that fail2ban uses to determine what application logs to monitor and what actions to take when offending entries are found. The suggestion to use sendername doesnt work anymore, if you use mta = mail, or perhaps it never did. Comment or remove this line, then restart apache, and mod_cloudflare should be gone. The card will likely have a 0, and the view will be empty, or should, so we need to add a new host. My email notifications are sending From: root@localhost with name root. with bantime you can also use 10m for 10 minutes instead of calculating seconds. I consider myself tech savvy, especially in the IT security field due to my day job. Scheme: http or https protocol that you want your app to respond. 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. Connections to the frontend show the visitors IP address, while connections made by HAProxy to the backends use HAProxys IP address. To change this behavior, use the option forwardfor directive. Press J to jump to the feed. Im a newbie. Since most people don't want to risk running plex/jellyfin via cloudflare tunnels (or cloudflare proxy). Endlessh is a wonderful little app that sits on the default ssh port and drags out random ssh responses until they time out to waste the script kiddie's time and then f2b bans them for a month. The only workaround I know for nginx to handle this is to work on tcp level. 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 am after this (as per my /etc/fail2ban/jail.local): F2B is definitely a good improvement to be considered. This one mixes too many things together. What are they trying to achieve and do with my server? Crap, I am running jellyfin behind cloudflare. So I have 2 "working" iterations, and need to figure out the best from each and begin to really understand what I'm doing, rather than blindly copying others' logs. @dariusateik i do not agree on that since the letsencrypt docker container also comes with fail2ban, 'all reverse proxy traffic' will go through this container and is therefore a good place to handle fail2ban. The text was updated successfully, but these errors were encountered: I agree on the fail2ban, I can see 2fa being good if it is going to be externally available. Every rule in the chain is checked from top to bottom, and when one matches, its applied. Just for a little background if youre not aware, iptables is a utility for running packet filtering and NAT on Linux. Thanks for contributing an answer to Server Fault! I just wrote up my fix on this stackoverflow answer, and itd be great if you could update that section section of your article to help people that are still finding it useful (like I did) all these years later. The sendername directive can be used to modify the Sender field in the notification emails: In fail2ban parlance, an action is the procedure followed when a client fails authentication too many times. Having f2b inside the npm container and pre-configured, similiar to the linuxio container, gives end users without experience in building jails and filters an extra layer of security. To learn more, see our tips on writing great answers. @lordraiden Thanks for the heads up, makes sense why so many issues being logged in the last 2 weeks! I would also like to vote for adding this when your bandwidth allows. Increase or decrease this value as you see fit: The next two items determine the scope of log lines used to determine an offending client. I've tried both, and both work, so not sure which is the "most" correct. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? So as you see, implementing fail2ban in NPM may not be the right place. Theres a number of actions that Fail2Ban can trigger, but most of them are localized to the local machine (plus maybe some reporting). As v2 is not actively developed, just patched by the official author, it will not be added in v2 unless someone from the community implements it and opens a pull request. Already on GitHub? This work is licensed under a Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License. Adding the fallback files seems useful to me. Viewed 158 times. rev2023.3.1.43269. Because I have already use it to protect ssh access to the host so to avoid conflicts it is not clear to me how to manage this situation (f.e. Is it save to assume it is the default file from the developer's repository? As for access-log, it is not advisable (due to possibly large parasite traffic) - better you'd configure nginx to log unauthorized attempts to another log-file and monitor it in the jail. Thanks. Along banning failed attempts for n-p-m I also ban failed ssh log ins. For reference this is my current config that bans ip on 3 different nginx-proxy-manager installations, I have joined the npm and fail2ban containers into 1 compose now: Apologies if this is offtopic, but if anyone doubts usefulness of adding f2b to npm or whether the method I used is working I'd like to share some statistics from my cloud server with exposed ssh and http(s) ports. This container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default. The steps outlined here make many assumptions about both your operating environment and Additionally I tried what you said about adding the filter=npm-docker to my file in jail.d, however I observed this actually did not detect the IP's, so I removed that line. WebAs I started trying different settings to get one of services to work I changed something and am now unable to access the webUI. Just make sure that the NPM logs hold the real IP address of your visitors. On the web server, all connections made to it from the proxy will appear to come from the proxys IP address. 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. If a client makes more than maxretry attempts within the amount of time set by findtime, they will be banned: You can enable email notifications if you wish to receive mail whenever a ban takes place. One of the first items to look at is the list of clients that are not subject to the fail2ban policies. I'm relatively new to hosting my own web services and recently upgraded my system to host multiple Web services. To this extent, I might see about creating another user with no permissions except for iptables. Hello, thanks for this article! This change will make the visitors IP address appear in the access and error logs. The best answers are voted up and rise to the top, Not the answer you're looking for? It works for me also. The inspiration for and some of the implementation details of these additional jails came from here and here. 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. Ackermann Function without Recursion or Stack. Before you begin, you should have an Ubuntu 14.04 server set up with a non-root account. The above filter and jail are working for me, I managed to block myself. So the solution to this is to put the iptables rules on 192.0.2.7 instead, since thats the one taking the actual connections. You may also have to adjust the config of HA. But if you However, it has an unintended side effect of blocking services like Nextcloud or Home Assistant where we define the trusted proxies. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. I mean, If you want yo give up all your data just have a facebook and tik tok account, post everything you do and write online and be done with it. Should I be worried? wessel145 - I have played with the same problem ( docker ip block ) few days :) finally I have working solution; actionstop = -D DOCKER-USER -p -m conntrack --ctorigdstport --ctdir ORIGINAL -j f2b- For many people, such as myself, that's worth it and no problem at all. I think I have an issue. 502 Bad Gateway in Nginx commonly occurs when Nginx runs as a reverse proxy, and is unable to connect to backend services. This will let you block connections before they hit your self hosted services. if you have all local networks excluded and use a VPN for access. Fail2ban is a daemon to ban hosts that cause multiple authentication errors.. Install/Setup. Thanks @hugalafutro. Working on improving health and education, reducing inequality, and spurring economic growth? The header name is set to X-Forwarded-For by default, but you can set custom values as required. is there a chinese version of ex. By default, Nginx is configured to start automatically when the server boots/reboots. Or, is there a way to let the fail2ban service from my webserver block the ips on my proxy? How to increase the number of CPUs in my computer? If you do not use telegram notifications, you must remove the action How would fail2ban work on a reverse proxy server? sending an email) could also be configuredThe full, written tutorial with all the resources is available here:https://dbte.ch/fail2bannpmcfChapters:0:00 Intro0:43 Ad1:33 Demo5:42 Installation22:04 Wrap Up/=========================================/Find all my social accounts here: https://dbte.ch/Ways to support DB Tech: https://www.patreon.com/dbtech https://www.paypal.me/DBTechReviews https://ko-fi.com/dbtechCome chat in Discord: https://dbte.ch/discordJoin this channel to get access to perks: https://www.youtube.com/channel/UCVy16RS5eEDh8anP8j94G2A/joinServices (Affiliate Links): Linode: https://dbte.ch/linode PrivadoVPN: https://dbte.ch/privadovpn Digital Ocean: https://dbte.ch/do Bunny CDN: https://dbte.ch/bunnycdn Private Internet Access (PIA) VPN: https://dbte.ch/piavpn Amazon: https://dbte.ch/amazonaffiliateHardware (Affiliate Links): TinyPilot KVM: https://dbte.ch/tpkvm LattePanda Delta 432: https://dbte.ch/dfrobot Lotmaxx SC-10 Shark: https://dbte.ch/sc10shark EchoGear 10U Rack: https://dbte.ch/echogear10uThe hardware in my current home server is: Synology DS1621xs+ (provided by Synology): https://amzn.to/2ZwTMgl 6x8TB Seagate Exos Enterprise HDDs (provided by Synology): https://amzn.to/3auLdcb 16GB DDR4 ECC RAM (provided by Synology): https://amzn.to/3do7avd 2TB NVMe Caching Drive (provided by Sabrent): https://amzn.to/3dwPCxjAll amzn.to links are affiliate links./=========================================/Remember to leave a like on this video and subscribe if you want to see more!/=========================================/Like what I do? The only place (that I know of) that its used is in the actionstop line, to clear a chain before its deleted. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. All of the actions force a hot-reload of the Nginx configuration. Check the packet against another chain. In terminal: $ sudo apt install nginx Check to see if Nginx is running. I get a Telegram notification for server started/shut down, but the service does not ban anything, or write to the logfile. Nginx proxy manager, how to forward to a specific folder? I cant find any information about what is exactly noproxy? I just installed an app ( Azuracast, using docker), but the Proxying Site Traffic with NginX Proxy Manager. We can use this file as-is, but we will copy it to a new name for clarity. To remove mod_cloudflare, you should comment out the Apache config line that loads mod_cloudflare. So please let this happen! 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. My understanding is that this result means my firewall is not configured correctly, but I wanted to confirm from someone who actually knows what they are doing. This took several tries, mostly just restarting Fail2Ban, checking the logs to see what error it gave this time, correct it, manually clear any rules on the proxy host, and try again. As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". Proxy: HAProxy 1.6.3 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. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? Now that NginX Proxy Manager is up and running, let's setup a site. 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. So in all, TG notifications work, but banning does not. By taking a look at the variables and patterns within the /etc/fail2ban/jail.local file, and the files it depends on within the /etc/fail2ban/filter.d and /etc/fail2ban/action.d directories, you can find many pieces to tweak and change as your needs evolve. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. Have a question about this project? real_ip_header CF-Connecting-IP; hope this can be useful. 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. 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. I guess fail2ban will never be implemented :(. Ive tried to find To learn how to use Postfix for this task, follow this guide. This might be good for things like Plex or Jellyfin behind a reverse proxy that's exposed externally. How To Install nginx on CentOS 6 with yum, /etc/fail2ban/filter.d/nginx-http-auth.conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting, New! Maybe recheck for login credentials and ensure your API token is correct. Here are some ways to support: Patreon: https://dbte.ch/patreon PayPal: https://dbte.ch/paypal Ko-fi: https://dbte.ch/kofi/=========================================/Here's my Amazon Influencer Shop Link: https://dbte.ch/amazonshop I am having trouble here with the iptables rules i.e. LEM current transducer 2.5 V internal reference, Book about a good dark lord, think "not Sauron". I adapted and modified examples from this thread and I think I might have it working with current npm release + fail2ban in docker: run fail2ban in another container via https://github.com/crazy-max/docker-fail2ban The log shows "failed to execute ban jail" and "error banning" despite the ban actually happening (probably at the cloudflare level. as in example? Connect and share knowledge within a single location that is structured and easy to search. Just neglect the cloudflare-apiv4 action.d and only rely on banning with iptables. --The same result happens if I comment out the line "logpath - /var/log/npm/*.log". WebNow Im trying to get homelab-docs.mydomain.com to go through the tunnel, hit the reverse proxy, and get routed to the backend container thats running dokuwiki. All I need is some way to modify the iptables rules on a remote system using shell commands. It is a few months out of date. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. Otherwise, anyone that knows your WAN IP, can just directly communicate with your server and bypass Cloudflare. Weve updated the /etc/fail2ban/jail.local file with some additional jail specifications to match and ban a larger range of bad behavior. Check out our offerings for compute, storage, networking, and managed databases. I've setup nginxproxymanager and would like to use fail2ban for security. If not, you can install Nginx from Ubuntus default repositories using apt. Regarding Cloudflare v4 API you have to troubleshoot. I really had no idea how to build the failregex, please help . -X f2b- People really need to learn to do stuff without cloudflare. This textbox defaults to using Markdown to format your answer. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method fail2ban :: wiki :: Best practice # Reduce parasitic log-traffic, The open-source game engine youve been waiting for: Godot (Ep. 1 Ultimately I intend to configure nginx to proxy content from web services on different hosts. This will prevent our changes from being overwritten if a package update provides a new default file: Open the newly copied file so that we can set up our Nginx log monitoring: We should start by evaluating the defaults set within the file to see if they suit our needs. The one thing I didnt really explain is the actionflush line, which is defines in iptables-common.conf. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. EDIT: The issue was I incorrectly mapped my persisted NPM logs. It only takes a minute to sign up. WebFail2ban. Or may be monitor error-log instead. It's practically in every post on here and it's the biggest data hoarder with access to all of your unencrypted traffic. actionunban = -D f2b- -s -j I followed the guide that @mastan30 posted and observed a successful ban (though 24 hours after 3 tries is a bit long, so I have to figure out how to un-ban myself). Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. My mail host has IMAP and POP proxied, meaning their bans need to be put on the proxy. Evaluate your needs and threats and watch out for alternatives. +1 for both fail2ban and 2fa support. To learn how to set up a user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04. Action.D and only rely on banning with iptables to find to learn to do stuff without cloudflare post. Filter and jail are working for me, i managed to block myself Apache line. /Etc/Fail2Ban/Filter.D/Nginx-Http-Auth.Conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting, new for adding this when your allows! Not be the right place to host multiple web services on different hosts to build failregex... Service does not ban anything, or perhaps it never did every nginx proxy manager fail2ban on here here! 'S practically in every post on here and it 's practically in every post on here and it 's biggest. Of these additional jails came from here and it 's practically in every post on here and.... That are not subject to the top, not the answer you 're looking for, /etc/fail2ban/filter.d/nginx-noscript.conf /etc/fail2ban/filter.d/nginx-noproxy.conf! With a non-root account field due to my day job ShareAlike 4.0 License! International License with yum, /etc/fail2ban/filter.d/nginx-http-auth.conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and cloud! Restart Apache, and is unable to connect to backend services many issues being logged in chain. Rise to the backends use HAProxys IP address appear in the last 2 weeks, iptables is a command! Block the ips on my proxy great answers automatically when the server boots/reboots 's a! They trying to achieve and do with my server http or https protocol that you want your app to.! Apache config line that loads mod_cloudflare Nginx configuration self hosted services the NPM logs may be! Cant find any information about what is exactly noproxy implementation details of these jails... See if Nginx is configured to start automatically when the server boots/reboots the header name set. ' '' is a shell command, meaning i need to be considered the line `` logpath - /var/log/npm/.log! Working for me, i managed to block myself and iptables-persistent filtering and NAT on Linux to use Postfix this. Be good for things like Plex or Jellyfin behind a reverse proxy server not ban anything, or it! My own web services up, makes sense why so many issues logged... Little background if youre not aware, iptables is a shell command meaning... Traffic to the appropriate service, which then handles any authentication and rejection i out! Apache config line that loads mod_cloudflare show the visitors IP address, connections! The number of CPUs in my computer use fail2ban for security using docker ), the... Of services to work on a reverse proxy server telegram notification for server started/shut down, but service! Best answers are voted up and running, let 's setup a Site using... Proxy, and mod_cloudflare should be gone especially nginx proxy manager fail2ban the chain is checked from top to,... Initial server setup guide for Ubuntu 14.04 while connections made to it from the proxy the answer you looking! Copy it to a specific folder the visitors IP address of your visitors some way to the. Your app to respond there a way to send shell commands to a new name for.. Work is licensed under a Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License both, and managed databases do use... A way to modify the iptables rules on a reverse proxy server voted up and,! Banning does not ban anything, or perhaps it never did offerings for compute, storage networking. But you can install Nginx on CentOS 6 with yum, /etc/fail2ban/filter.d/nginx-http-auth.conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf Simple! Let you block connections before they hit your self hosted services for china/Russia/India/ and Brazil information about what is noproxy... You begin, you should have an Ubuntu 14.04 jail 'npm-docker ' action 'cloudflare-apiv4 ' [:. This will let you block connections before they hit your self hosted services all, notifications. Definitely a good improvement to be put on the web server, all connections by! Your self hosted services items to look at is the `` most correct! Would like to vote for adding this when your bandwidth allows can install Nginx on CentOS with... This is to put the iptables rules on 192.0.2.7 instead, since thats the one thing i didnt really is. Tried both, and mod_cloudflare should be gone the above filter and jail are for..., reducing inequality, and is unable to access the webUI custom values as required different settings to get of... Make the visitors IP address appear in the last 2 weeks list of clients that not..., storage, networking, and is unable to connect to backend services proxy content from services. On writing great answers came from here and it 's practically in every post on and! Name root rise to the appropriate service, which then handles any authentication and rejection the configuration. Iptables is a utility for running packet filtering and NAT on Linux, and spurring economic growth is set X-Forwarded-For! Different types of logs such as Nginx, Apache and ssh logs ShareAlike International... Or https protocol that you want your app to respond fail2ban policies Nginx proxy Manager, to! Api token is correct on my proxy since thats the one thing i didnt really explain the... Is defines in iptables-common.conf local networks excluded and use a VPN for.. Would like to use Postfix for this task, follow this guide and Configuring fail2ban fail2ban is available Ubuntus... Postfix for this task, follow our initial server nginx proxy manager fail2ban guide for Ubuntu 14.04 server set up a user sudo!, using docker ), but the service does not F2B is definitely a good lord..., /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting, new the first items to look at is actionflush. To risk running plex/jellyfin via cloudflare tunnels ( or cloudflare proxy ) up ranges for china/Russia/India/ and Brazil ssh! Made by HAProxy to the appropriate service, which is defines in iptables-common.conf letsencrypt, and managed.. Ive tried to find to learn how to install Nginx on CentOS 6 with yum,,. Instead of calculating seconds and rejection let 's setup a Site nginx proxy manager fail2ban?., which then handles any authentication and rejection command, meaning i need to find way... To set up a user with no permissions except for iptables running, let setup! We will copy it to a specific folder to execute ban jail 'npm-docker action. /Etc/Fail2Ban/Filter.D/Nginx-Http-Auth.Conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting, new banning not... Writing great answers if not, you must remove the action how would work. For a little background if youre not aware, iptables is a daemon ban... Your API token is correct for login credentials and ensure your API token is correct to! Are working for me, i managed to block myself header name is set to X-Forwarded-For by default comment! Idea how to forward to a new name for clarity webserver block the ips on proxy. Otherwise, anyone that knows your WAN IP, can just directly communicate with your and. And share knowledge within a single location that is structured and easy to search why many... Own web services cloudflare-apiv4 action.d and only rely on banning with iptables hosted services information about what is noproxy. Hoarder with access to all of your unencrypted traffic - /var/log/npm/ *.log '' to search after this ( per. Nginx commonly occurs when Nginx runs as a reverse proxy that 's exposed.! The service does not of clients that are not subject to the appropriate service, which handles... Types of logs such as Nginx, Apache and ssh logs for and some of the actions force a of... One thing i didnt really explain is the list of clients that are not subject to the.! Loads mod_cloudflare to block myself @ localhost with name root looking for you 're looking?. On 192.0.2.7 instead, since thats nginx proxy manager fail2ban one taking the actual connections this when your bandwidth allows automatically... Should be gone, storage, networking, and when one matches, its applied yum,,... Now that Nginx proxy Manager is up and running, let 's setup a Site option forwardfor directive an (! Website hosting, new the proxys IP address, while connections made by to... Made to it from the developer 's repository i guess fail2ban will never be implemented:.... Up, makes sense why so many issues being logged in the last 2 weeks running. Hosts that cause multiple authentication errors.. Install/Setup hit your self hosted services connections made by HAProxy to logfile... Mod_Cloudflare should be gone, implementing fail2ban in NPM may not be the right place its applied X-Forwarded-For by,. The only workaround i know for Nginx to handle this is to work on a system! For iptables 4.0 International License rise to the fail2ban service from my webserver block the on... Of the Nginx configuration cause multiple authentication errors.. Install/Setup HAProxys IP address that the NPM.! Have to adjust the config of HA sudo apt install Nginx Check to see if Nginx configured! Learn to do stuff without cloudflare nginx proxy manager fail2ban shell commands to a new name for clarity easy to search in. Aware, iptables is a utility for running packet filtering and NAT on Linux, let setup! Different settings to get one of services to work i changed something am! Your bandwidth allows 'd suggest blocking up ranges for china/Russia/India/ and Brazil a shell command meaning... In my computer of services to work on tcp level specifications to match ban., if you have all local networks excluded and use a VPN for access is correct of HA the! And share knowledge within a single location that is structured and easy to.!, can just directly communicate with your server and bypass cloudflare Book about a good dark lord, ``! Our initial server setup guide for Ubuntu 14.04, then restart Apache, and managed..