nginx proxy manager fail2ban
[PARTIALLY SOLVED, YOU REFER TO THE MAPPED FOLDERS] my logs make by npm are all in in a logs folder (no log, logS), and has the following pattern: /logs/proxy-host-*.log and also fallback*.log; [UPDATE, PARTIALLY SOLVED] the regex seems to work, files proxy* contain: Yes this is just relative path of the npm logs you mount read-only into the fail2ban container, you have to adjust accordingly to your path. We now have to add the filters for the jails that we have created. The suggestion to use sendername doesnt work anymore, if you use mta = mail, or perhaps it never did. But if you +1 for both fail2ban and 2fa support. Since most people don't want to risk running plex/jellyfin via cloudflare tunnels (or cloudflare proxy). It works for me also. I've followed the instructions to a T, but run into a few issues. Well occasionally send you account related emails. Then I added a new Proxy Host to Nginx Proxy Manager with the following configuration: Details: Domain Name: (something) Scheme: http IP: 192.168.123.123 Port: 8080 Cache Assets: disabled Block Common Exploits: enabled Websockets Support: enabled Access List: Publicly Accessible SSL: Force SSL: enabled HSTS Enabled: enabled HTTP/2 The findtime specifies an amount of time in seconds and the maxretry directive indicates the number of attempts to be tolerated within that time. Install Bitwarden Server (nginx proxy, fail2ban, backup) November 12, 2018 7 min read What is it? Hi, thank you so much for the great guide! Fill in the needed info for your reverse proxy entry. How does the NLT translate in Romans 8:2? The best answers are voted up and rise to the top, Not the answer you're looking for? 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. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. I just cobbled the fail2ban "integration" together from various tutorials, with zero understanding of iptables or docker networking etc. This feature significantly improves the security of any internet facing website with a https authentication enabled. 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. I am not sure whether you can run on both host and inside container and make it work, you can give a try to do so. I also adjusted the failregex in filter.d/npm-docker.conf, here is the file content: Referencing the instructions that @hugalafutro mentions here: I attempted to follow your steps, however had a few issues: The compose file you mention includes a .env file, however you didn't provide the contents of this file. To properly block offenders, configure the proxy and Nginx to pass and receive the visitors IP address. Have a question about this project? I confirmed the fail2ban in docker is working by repeatedly logging in with bad ssh password and that got banned correctly and I was unable to ssh from that host for configured period. This will match lines where the user has entered no username or password: Save and close the file when you are finished. Domain names: FQDN address of your entry. 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). Have you correctly bind mounted your logs from NPM into the fail2ban container? 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. I'm confused). 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. By default, only the [ssh] jail is enabled. I have my fail2ban work : Do someone have any idea what I should do? Proxying Site Traffic with NginX Proxy Manager. I am behind Cloudflare and they actively protect against DoS, right? The typical Internet bots probing your stuff and a few threat actors that actively search for weak spots. bleepcoder.com uses publicly licensed GitHub information to provide developers around the world with solutions to their problems. nginxproxymanager fail2ban for 401. These items set the general policy and can each be overridden in specific jails. Fail2ban does not update the iptables. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. 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- Have a question about this project? But there's no need for anyone to be up on a high horse about it. Or can put SSL certificates on your web server and still hide traffic from them even if they are the proxy? [Init], maxretry = 3 What command did you issue, I'm assuming, from within the f2b container itself? Because how my system is set up, Im SSHing as root which is usually not recommended. These filter files will specify the patterns to look for within the Nginx logs. Once these are set, run the docker compose and check if the container is up and running or not. One of the first items to look at is the list of clients that are not subject to the fail2ban policies. Would be great to have fail2ban built in like the linuxserver/letsencrypt Docker container! Scheme: http or https protocol that you want your app to respond. And those of us with that experience can easily tweak f2b to our liking. Secure Your Self Hosting with Fail2Ban + Nginx Proxy Manager + CloudFlare 16,187 views Jan 20, 2022 Today's video is sponsored by Linode! We dont need all that. Then the services got bigger and attracted my family and friends. If youd like to learn more about fail2ban, check out the following links: Thanks for learning with the DigitalOcean Community. 4/5* with rice. Indeed, and a big single point of failure. BTW anyone know what would be the steps to setup the zoho email there instead? I am having an issue with Fail2Ban and nginx-http-auth.conf filter. However, it is a general balancing of security, privacy and convenience. @lordraiden Thanks for the heads up, makes sense why so many issues being logged in the last 2 weeks! as in example? If youve ever done some proxying and see Fail2Ban complaining that a host is already banned, this is one cause. real_ip_header CF-Connecting-IP; hope this can be useful. In the volume directive of the compose file, you mention the path as - "../nginx-proxy-manager/data/logs/:/log/npm/:ro". I think I have an issue. It's the configuration of it that would be hard for the average joe. Currently fail2ban doesn't play so well sitting in the host OS and working with a container. We need to enable some rules that will configure it to check our Nginx logs for patterns that indicate malicious activity. Did you try this out with any of those? Asking for help, clarification, or responding to other answers. LoadModule cloudflare_module. But with nginx-proxy-manager the primary attack vector in to someones network iswellnginx-proxy-manager! Or save yourself the headache and use cloudflare to block ips there. However, we can create our own jails to add additional functionality. Anyone who wants f2b can take my docker image and build a new one with f2b installed. Web Server: Nginx (Fail2ban). Feel free to adjust the script suffixes to remove language files that your server uses legitimately or to add additional suffixes: Next, create a filter for the [nginx-nohome] jail: Place the following filter information in the file: Finally, we can create the filter for the [nginx-noproxy] jail: This filter definition will match attempts to use your server as a proxy: To implement your configuration changes, youll need to restart the fail2ban service. If fail to ban blocks them nginx will never proxy them. In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? In this case, the action is proxy-iptables (which is what I called the file, proxy-iptables.conf), and everything after it in [ ] brackets are the parameters. You get paid; we donate to tech nonprofits. Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. 100 % agree - > On the other hand, f2b is easy to add to the docker container. If you do not pay for a service then you are the product. I know there is already an option to "block common exploirts" but I'm not sure what that actually does, and fail2ban is quite a robust way of dealing with attacks. Check the packet against another chain. Should I be worried? I'm curious to get this working, but may actually try CrowdSec instead, since the developers officially support the integration into NPM. (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). Truce of the burning tree -- how realistic? if you have all local networks excluded and use a VPN for access. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. It's completely fine to let people know that Cloudflare can, and probably will, collect some of your data if you use them. If you do not use PHP or any other language in conjunction with your web server, you can add this jail to ban those who request these types of resources: We can add a section called [nginx-badbots] to stop some known malicious bot request patterns: If you do not use Nginx to provide access to web content within users home directories, you can ban users who request these resources by adding an [nginx-nohome] jail: We should ban clients attempting to use our Nginx server as an open proxy. After this fix was implemented, the DoS stayed away for ever. 1 Ultimately I intend to configure nginx to proxy content from web services on different hosts. What I really need is some way for Fail2Ban to manage its ban list, effectively, remotely. I agree than Nginx Proxy Manager is one of the potential users of fail2ban. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. Super secret stuff: I'm not working on v2 anymore, and instead slowly working on v3. You'll also need to look up how to block http/https connections based on a set of ip addresses. Theres a number of actions that Fail2Ban can trigger, but most of them are localized to the local machine (plus maybe some reporting). 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:. Sign in Check out our offerings for compute, storage, networking, and managed databases. Proxy: HAProxy 1.6.3 https://www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o?utm_medium=android_app&utm_source=share&context=3. to your account, Please consider fail2ban 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. 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. However, fail2ban provides a great deal of flexibility to construct policies that will suit your specific security needs. Even with no previous firewall rules, you would now have a framework enabled that allows fail2ban to selectively ban clients by adding them to purpose-built chains: If you want to see the details of the bans being enforced by any one jail, it is probably easier to use the fail2ban-client again: It is important to test your fail2ban policies to ensure they block traffic as expected. Fail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. So please let this happen! So in all, TG notifications work, but banning does not. If you are not using Cloudflare yet, just ignore the cloudflare-apiv4 action.d script and focus only on banning with iptables. Always a personal decision and you can change your opinion any time. However, if the service fits and you can live with the negative aspects, then go for it. It is a few months out of date. Would also love to see fail2ban, or in the meantime, if anyone has been able to get it working manually and can share their setup/script. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. First, create a new jail: [nginx-proxy] enabled = true port = http logpath = % Setting up fail2ban can help alleviate this problem. 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. This is less of an issue with web server logins though if you are able to maintain shell access, since you can always manually reverse the ban. Errata: both systems are running Ubuntu Server 16.04. If you do not use telegram notifications, you must remove the action Hello, thanks for this article! What i would like to prevent are the last 3 lines, where the return code is 401. 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. Because this also modifies the chains, I had to re-define it as well. I suppose you could run nginx with fail2ban and fwd to nginx proxy manager but sounds inefficient. All rights belong to their respective owners. 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. You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link! However, I still receive a few brute-force attempts regularly although Cloudflare is active. I would also like to vote for adding this when your bandwidth allows. Update the local package index and install by typing: The fail2ban service is useful for protecting login entry points. On the web server, all connections made to it from the proxy will appear to come from the proxys IP address. 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? 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/. Almost 4 years now. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Thanks for your blog post. Viewed 158 times. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? It only takes a minute to sign up. Already on GitHub? I've been hoping to use fail2ban with my npm docker compose set-up. https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-14-04. 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. "/action.d/action-ban-docker-forceful-browsing.conf" - took me some time before I realized it. I agree than Nginx Proxy Manager is one of the potential users of fail2ban. Thanks. When i used this command: sudo iptables -S some Ips also showed in the end, what does that means? Evaluate your needs and threats and watch out for alternatives. How does a fan in a turbofan engine suck air in? WebThe fail2ban service is useful for protecting login entry points. Thanks for contributing an answer to Server Fault! Making statements based on opinion; back them up with references or personal experience. To change this behavior, use the option forwardfor directive. 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. 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). WebAs I started trying different settings to get one of services to work I changed something and am now unable to access the webUI. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method Ultimately, it is still Cloudflare that does not block everything imo. But at the end of the day, its working. They can and will hack you no matter whether you use Cloudflare or not. Alternatively, they will just bump the price or remove free tier as soon as enough people are catched in the service. Setting up fail2ban is also a bit more advanced then firing up the nginx-proxy-manager container and using a UI to easily configure subdomains. 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 this guide, we will demonstrate how to install fail2ban and configure it to monitor your Nginx logs for intrusion attempts. Right, they do. Already on GitHub? Setting up fail2ban is also a bit more advanced then firing up the nginx-proxy-manager container and using a UI to easily configure subdomains. Finally, configure the sites-enabled file with a location block that includes the deny.conf file Fail2ban is writing to. Each chain also has a name. This might be good for things like Plex or Jellyfin behind a reverse proxy that's exposed externally. Im a newbie. For all we care about, a rules action is one of three things: When Fail2Ban matches enough log lines to trigger a ban, it executes an action. 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':
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