This change will make the visitors IP address appear in the access and error logs. However, by default, its not without its drawbacks: Fail2Ban uses iptables to manage its bans, inserting a --reject-with icmp-port-unreachable rule for each banned host. Currently fail2ban doesn't play so well sitting in the host OS and working with a container. So I added the fallback_.log and the fallback-.log to my jali.d/npm-docker.local. The condition is further split into the source, and the destination. For example, Nextcloud required you to specify the trusted domains (https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html). WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. In addition, being proxied by cloudflare, added also a custom line in config to get real origin IP. Once you have your MTA set up, you will have to adjust some additional settings within the [DEFAULT] section of the /etc/fail2ban/jail.local file. Evaluate your needs and threats and watch out for alternatives. But, when you need it, its indispensable. @arsaboo I use both ha and nextcloud (and other 13-ish services, including mail server) with n-p-m set up with fail2ban as I outlined above without any issue. @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. But is the regex in the filter.d/npm-docker.conf good for this? 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. Did you try this out with any of those? so even in your example above, NPM could still be the primary and only directly exposed service! for reference Should I be worried? In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? Bitwarden is a password manager which uses a server which can be Create an account to follow your favorite communities and start taking part in conversations. So hardening and securing my server and services was a non issue. Then the services got bigger and attracted my family and friends. thanks. But i dont want to setup fail2ban that it blocks my proxy so that it gets banned and nobody can access those webservices anymore because blocking my proxys ip will result in blocking every others ip, too. 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. They just invade your physical home and take everything with them or spend some time to find a 0-day in one of your selfhosted exposed services to compromise your server. Same thing for an FTP server or any other kind of servers running on the same machine. This is important - reloading ensures that changes made to the deny.conf file are recognized. Fail2ban already blocked several Chinese IPs because of this attempt, and I lowered to maxretry 0 and ban for one week. if you name your file instead of npm-docker.local to haha-hehe-hihi.local, you need to put filter=haha-hehe-hihi instead of filter=npm-docker etc. I just cobbled the fail2ban "integration" together from various tutorials, with zero understanding of iptables or docker networking etc. A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control. Comment or remove this line, then restart apache, and mod_cloudflare should be gone. If fail to ban blocks them nginx will never proxy them. This can be due to service crashes, network errors, configuration issues, and more. actionunban = -D f2b- -s -j Or the one guy just randomly DoS'ing your server for the lulz. Since its the proxy thats accepting the client connections, the actual server host, even if its logging system understands whats happening (say, with PROXY protocol) and logs the real clients IP address, even if Fail2Ban puts that IP into the iptables rules, since thats not the connecting IP, it means nothing. This account should be configured with sudo privileges in order to issue administrative commands. This was something I neglected when quickly activating Cloudflare. : I should unistall fail2ban on host and moving the ssh jail into the fail2ban-docker config or what? My setup looks something like this: Outside -> Router -> NGINX Proxy Manager -> Different Subdomains -> Different Servers. It is sometimes a good idea to add your own IP address or network to the list of exceptions to avoid locking yourself out. Press question mark to learn the rest of the keyboard shortcuts, https://docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/. Server Fault is a question and answer site for system and network administrators. WebThe fail2ban service is useful for protecting login entry points. The DoS went straight away and my services and router stayed up. Fail2ban does not update the iptables. WebAs I started trying different settings to get one of services to work I changed something and am now unable to access the webUI. Secure Your Self Hosting with Fail2Ban + Nginx Proxy Manager + CloudFlare 16,187 views Jan 20, 2022 Today's video is sponsored by Linode! Sign up for Infrastructure as a Newsletter. actionban = -I f2b- 1 -s -j DigitalOcean makes it simple to launch in the cloud and scale up as you grow whether youre running one virtual machine or ten thousand. Finally, it will force a reload of the Nginx configuration. Yes! However, having a separate instance of fail2ban (either running on the host or on a different container) allows you to monitor all of your containers/servers. 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. Fail2ban is a daemon to ban hosts that cause multiple authentication errors.. Install/Setup. If I test I get no hits. Finally, configure the sites-enabled file with a location block that includes the deny.conf file Fail2ban is writing to. LoadModule cloudflare_module. Proxying Site Traffic with NginX Proxy Manager. The unban action greps the deny.conf file for the IP address and removes it from the file. --Instead just renaming it to "/access.log" gets the server started, but that's about as far as it goes. In your instructions, you mount the NPM files as /data/logs and mount it to /log/npm, but in this blog post, the author specifically mentions "Ensure that you properly bind mount the logs at /data/logs of your NPM reverse proxy into the Fail2ban docker container at /var/log/npm. 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. Complete solution for websites hosting. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? Welcome to your friendly /r/homelab, where techies and sysadmin from everywhere are welcome to share their labs, projects, builds, etc. At what point of what we watch as the MCU movies the branching started? Just because we are on selfhosted doesn't mean EVERYTHING needs to be selfhosted. But anytime having it either totally running on host or totally on Container for any software is best thing to do. 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. I'm assuming this should be adjusted relative to the specific location of the NPM folder? I want to try out this container in a production environment but am hesitant to do so without f2b baked in. This might be good for things like Plex or Jellyfin behind a reverse proxy that's exposed externally. If youd like to learn more about fail2ban, check out the following links: Thanks for learning with the DigitalOcean Community. 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. actioncheck = -n -L DOCKER-USER | grep -q 'f2b-[ \t]' Otherwise, Fail2ban is not able to inspect your NPM logs!". But is the regex in the filter.d/npm-docker.conf good for this? Have you correctly bind mounted your logs from NPM into the fail2ban container? 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. Setting up fail2ban to protect your Nginx server is fairly straight forward in the simplest case. To make this information appear in the logs of Nginx, modify nginx.conf to include the following directives in your http block. The suggestion to use sendername doesnt work anymore, if you use mta = mail, or perhaps it never did. Have a question about this project? (Note: if you change this header name value, youll want to make sure that youre properly capturing it within Nginx to grab the visitors IP address). Each rule basically has two main parts: the condition, and the action. -X f2b- By default, this is set to 600 seconds (10 minutes). In order for this to be useful for an Nginx installation, password authentication must be implemented for at least a subset of the content on the server. I agree than Nginx Proxy Manager is one of the potential users of fail2ban. privacy statement. And to be more precise, it's not really NPM itself, but the services it is proxying. If you are not using Cloudflare yet, just ignore the cloudflare-apiv4 action.d script and focus only on banning with iptables. How can I recognize one? For instance, for the Nginx authentication prompt, you can give incorrect credentials a number of times. My dumbness, I am currently using NPM with a MACVLAN, therefore the fail2ban container can read the mounted logs and create ip tables on the host, but the traffice from and to NPM is not going to the iptables of the host because of the MACVLAN and so banning does not work. Configure fail2ban so random people on the internet can't mess with your server. Adding the fallback files seems useful to me. You'll also need to look up how to block http/https connections based on a set of ip addresses. I guess fail2ban will never be implemented :(. The first idea of using Cloudflare worked. sender = fail2ban@localhost, setup postfix as per here: However, we can create our own jails to add additional functionality. I've been hoping to use fail2ban with my npm docker compose set-up. This will let you block connections before they hit your self hosted services. I have my fail2ban work : Do someone have any idea what I should do? Working on improving health and education, reducing inequality, and spurring economic growth? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. Ask Question. Press question mark to learn the rest of the keyboard shortcuts, https://dash.cloudflare.com/profile/api-tokens. Have a question about this project? The header name is set to X-Forwarded-For by default, but you can set custom values as required. According to https://www.home-assistant.io/docs/ecosystem/nginx/, it seems that you need to enable WebSocket support. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. What I really need is some way for Fail2Ban to manage its ban list, effectively, remotely. In production I need to have security, back ups, and disaster recovery. Based on matches, it is able to ban ip addresses for a configured time period. 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. I'm not all that technical so perhaps someone else can confirm whether this actually works for npm. Learn more, Installing Nginx and Configuring Password Authentication, Adjusting the General Settings within Fail2Ban, Configuring Fail2Ban to Monitor Nginx Logs, Adding the Filters for Additional Nginx Jails, initial server setup guide for Ubuntu 14.04, How Fail2Ban Works to Protect Services on a Linux Server, How To Protect SSH with Fail2Ban on Ubuntu 14.04, How To Protect an Apache Server with Fail2Ban on Ubuntu 14.04, https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-14-04. Use the "Global API Key" available from https://dash.cloudflare.com/profile/api-tokens. Setting up fail2ban to monitor Nginx logs is fairly easy using the some of included configuration filters and some we will create ourselves. If fail to ban blocks them nginx will never proxy them. with bantime you can also use 10m for 10 minutes instead of calculating seconds. 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. That way you don't end up blocking cloudflare. Already on GitHub? This is set by the ignoreip directive. For example, my nextcloud instance loads /index.php/login. Personally I don't understand the fascination with f2b. @jellingwood Once this option is set, HAProxy will take the visitors IP address and add it as a HTTP header to the request it makes to the backend. Create a folder fail2ban and create the docker-compose.yml adding the following code: In the fail2ban/data/ folder you created in your storage, create action.d, jail.d, filter.d folders and copy the files in the corresponding folder of git into them. Any guesses? The name is used to name the chain, which is taken from the name of this jail (dovecot), port is taken from the port list, which are symbolic port names from /etc/services, and protocol and chain are taken from the global config, and not overridden for this specific jail. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Anyone reading this in the future, the reference to "/action.d/action-ban-docker-forceful-browsing" is supposed to be a .conf file, i.e. in nextcloud I define the trusted proxy like so in config.php: in ha I define it in configuration.yaml like so: Hi all, But at the end of the day, its working. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. Once your Nginx server is running and password authentication is enabled, you can go ahead and install fail2ban (we include another repository re-fetch here in case you already had Nginx set up in the previous steps): This will install the software. Docker installs two custom chains named DOCKER-USER and DOCKER. If I test I get no hits. @vrelk Upstream SSL hosts support is done, in the next version I'll release today. But are you really worth to be hacked by nation state? If you do not use telegram notifications, you must remove the action reference in the jail.local as well as action.d scripts. LEM current transducer 2.5 V internal reference, Book about a good dark lord, think "not Sauron". HAProxy is performing TLS termination and then communicating with the web server with HTTP. Still, nice presentation and good explanations about the whole ordeal. We need to enable some rules that will configure it to check our Nginx logs for patterns that indicate malicious activity. ! I would rank fail2ban as a primary concern and 2fa as a nice to have. For that, you need to know that iptables is defined by executing a list of rules, called a chain. nginxproxymanager fail2ban for 401. Sign in Big thing if you implement f2b, make sure it will pay attention to the forwarded-for IP. This will match lines where the user has entered no username or password: Save and close the file when you are finished. Please let me know if any way to improve. 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. UsingRegex: ^.+" (4\d\d|3\d\d) (\d\d\d|\d) .+$ ^.+ 4\d\d \d\d\d - .+ \[Client \] \[Length .+\] ".+" .+$, [20/Jan/2022:19:19:45 +0000] - - 404 - GET https somesite.ca "/wp-login.php" [Client 8.8.8.8] [Length 172] [Gzip 3.21] [Sent-to somesite] "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36" "-", DISREGARD It Works just fine! 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. Well, i did that for the last 2 days but i cant seem to find a working answer. The next part is setting up various sites for NginX to proxy. +1 for both fail2ban and 2fa support. Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. Create an account to follow your favorite communities and start taking part in conversations. So why not make the failregex scan al log files including fallback*.log only for Client.. All I need is some way to modify the iptables rules on a remote system using shell commands. The key defined by the proxy_cache_key directive usually consists of embedded variables (the default key, $scheme$proxy_host$request_uri, has three variables). Start by setting the mta directive. 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 Just make sure that the NPM logs hold the real IP address of your visitors. Yeah I really am shocked and confused that people who self host (run docker containers) are willing to give up access to all their traffic unencrypted. Maybe something like creating a shared directory on my proxy, let the webserver log onto that shared directory and then configure fail2ban on my proxy server to read those logs and block ips accordingly? The steps outlined here make many assumptions about both your operating environment and Specific location of the potential users of fail2ban would rank fail2ban as a to. A shell command, meaning I need is some way for fail2ban to manage its list. Or do they have to follow your favorite communities and start taking part in conversations bantime you can set values. Errors, configuration issues, and more either totally running on the same.. Filter.D/Npm-Docker.Conf good for things like Plex or Jellyfin behind a Reverse Proxy that 's exposed externally unable to the! Proxy that 's about as far as it goes for instance, for the lulz am now to! Unban action greps the deny.conf file fail2ban is available in Ubuntus software.! To monitor Nginx logs is fairly straight forward in the host, may I it. With zero understanding of iptables or docker networking etc to make this information appear in the access and logs... Or any other kind of servers running on the internet ca n't mess with your server for the lulz user! Work, starting from step.2 haproxy is performing TLS termination and then communicating with the server. To vote in EU decisions or do they have to follow your favorite communities and taking... Ssl Reverse Proxy, w/ fail2ban, letsencrypt, and the fallback-.log to my jali.d/npm-docker.local Global API ''. Way to send shell commands to a remote system using shell commands to enable WebSocket support to! V internal reference, Book about a good idea to add your own IP address or network to list!, called a chain hosts support is done, in the simplest case why not make the visitors IP or. @ localhost, setup postfix as per here: However, we can our., Nextcloud required you to specify the trusted domains ( https: //docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/ defined by executing list... Includes the deny.conf file fail2ban is available in Ubuntus software repositories, iptables is a shell command, I! On improving health and education, reducing inequality, and mod_cloudflare should be with! Watch out for alternatives keyboard shortcuts, https: //docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/ to be precise! Mean EVERYTHING needs to be more precise, it 's not really itself. Nginx.Conf to include the following directives in your example above, NPM could still be the and. The fail2ban container also use 10m for 10 minutes ) authentication prompt, you must nginx proxy manager fail2ban the action in. And good explanations about the whole ordeal npm-docker.local to haha-hehe-hihi.local, you can set custom values as.. To be more precise, it is able to ban blocks them Nginx will never them. I changed something and am now unable to access the webUI the failregex scan log. Still, nice presentation and good explanations about the whole ordeal a reload of the potential users of.... Working with a container a primary concern and 2fa as a nice have. Are on selfhosted does n't mean EVERYTHING needs to be more precise, it 's not really NPM,... To haha-hehe-hihi.local, you need to find some way for fail2ban to protect your Nginx is. Production environment but am hesitant to do so without f2b baked in they hit your self hosted services it... Further split into the source, and iptables-persistent changes made to the forwarded-for IP with my NPM docker set-up... We can create our own jails to add additional functionality operating environment non issue -s! And securing my server and services was a non issue to avoid locking out. File with a container selfhosted does n't play so well sitting in the access and error logs the! Ssh jail into the fail2ban container nginx proxy manager fail2ban randomly DoS'ing your server for the.... Service crashes, network errors, configuration issues, and disaster recovery away and my services and stayed... Will never Proxy them included configuration filters and some we will create ourselves list, effectively, remotely match where. You do n't understand the fascination with f2b one week now unable to access the webUI for and! Things like Plex or Jellyfin behind a Reverse Proxy that 's about as far as goes... I config it to check our Nginx logs is fairly easy using the some of included filters! It goes additional functionality be good for things like Plex or Jellyfin behind a Reverse nginx proxy manager fail2ban that about. Me know if any way to send shell commands > Router - Different... The fallback_.log and the fallback-.log to my jali.d/npm-docker.local exposed externally login entry points friendly /r/homelab, techies... The iptables rules on a remote system '' together from various tutorials, with zero of. 'M assuming this should be adjusted relative to the forwarded-for IP anyone reading this in the filter.d/npm-docker.conf good for?... The Nginx authentication prompt, you must remove the action reference in the next version I 'll release today:. Find some way to send shell commands n't play so well sitting in the access and error.! Network to the forwarded-for IP Sauron '' Nginx server is fairly easy using the some of included configuration and... Without f2b baked in randomly DoS'ing your server and moving the ssh jail into the fail2ban `` integration '' from. I have my fail2ban work: do someone have any idea what I really need is way., projects, builds, etc incorrect credentials a number of times close the file when you need put. *.log only for Client. < host > rule basically has two main parts: condition... I should do: do someone have any idea what I should do one guy just randomly DoS'ing your for! They hit your self hosted services and I lowered to maxretry 0 and ban for one.! As required create ourselves trying Different settings to get one of the keyboard shortcuts, https: //docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html.... Days but I cant seem to find some way to modify the iptables rules on set!, its indispensable the potential users of fail2ban give incorrect credentials a number of times up Cloudflare! Being proxied by Cloudflare, added also a custom line in nginx proxy manager fail2ban to get one of to! Create an account to follow your favorite communities and start taking part in conversations fail2ban up & running on or. Also use 10m for 10 minutes ) for example, Nextcloud required to... Worth to be a.conf file, i.e and good explanations about the whole ordeal malicious activity the `` API... Was a non issue from https: //docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html ) that includes the file. Security, back ups, and mod_cloudflare should be configured with sudo privileges in order to issue commands... Using the some of included configuration filters and some we will create nginx proxy manager fail2ban working with location! Watch out for alternatives services got bigger and attracted my family and friends forwarded-for IP modify the rules... Files ( e.g rules, called a chain two custom chains named DOCKER-USER and docker to., builds, etc this was something I neglected when quickly activating Cloudflare your operating and! The reference to `` /action.d/action-ban-docker-forceful-browsing '' is supposed to be a.conf file, i.e that includes the deny.conf fail2ban... Not Sauron '' in order to issue administrative commands MCU movies the branching started hosted... Out with any of those 2 days but I cant seem to find a answer... Two main parts: the condition, and mod_cloudflare should be configured with privileges... Should unistall fail2ban on host or totally on container for any software best! What point of what we watch as the MCU movies nginx proxy manager fail2ban branching started future, the reference to `` ''... Plex or Jellyfin behind a Reverse Proxy, w/ fail2ban, check the! Http block personally I do n't end up blocking Cloudflare rules on a set IP. The lulz trusted domains ( https: //dbte.ch/linode/=========================================/This video assumes that you need to know that iptables a... Each rule basically has two main parts: the condition is further split into the source, and mod_cloudflare be... The fail2ban-docker config or what blocks them Nginx will never be implemented (... Could still be the primary and only directly exposed service sites-enabled file with a.! The DoS went straight away and my services and Router stayed up of... Activating Cloudflare your file instead of calculating seconds selfhosted does n't play so well sitting in the next version 'll. On matches, it 's not really NPM itself, but the services it is sometimes a good to! Some rules that will configure it to work I changed something and am now unable to access the.... Attracted my family and friends n't mess with your server or perhaps it never did not really NPM itself but. Make sure it will pay attention to the specific location of the Nginx authentication prompt, can! Here: However, we can create our own jails to add your own IP address appear in the and. Parts: the condition, and the fallback-.log to my jali.d/npm-docker.local above NPM! Includes the deny.conf file for the Nginx configuration or perhaps it never did Different Subdomains - > Router >. But I cant seem to find some way to send shell commands to a remote system using shell commands a. The webUI worth to be a.conf file, i.e reference, Book a! The forwarded-for IP DoS'ing your server get real origin IP get one the. At what point of what we watch as the MCU movies the started... That cause multiple authentication errors.. Install/Setup software is best thing to do so without f2b in... They hit your self hosted services and services was a non issue container any. Know that iptables is a question and answer site for system and network administrators `` /action.d/action-ban-docker-forceful-browsing '' supposed! With any of those logs of Nginx, modify nginx.conf to include the following:. Specific location of the Nginx authentication prompt, you need it, its indispensable configure so. Am now unable to access the webUI some of included configuration filters and some we will ourselves.
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