This container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default. So this means we can decide, based on where a packet came from, and where its going to, what action to take, if any. Check out our offerings for compute, storage, networking, and managed databases. I've setup nginxproxymanager and would like to use fail2ban for security. Each jail within the configuration file is marked by a header containing the jail name in square brackets (every section but the [DEFAULT] section indicates a specific jails configuration). When operating a web server, it is important to implement security measures to protect your site and users. I'm not an regex expert so any help would be appreciated. The above filter and jail are working for me, I managed to block myself. Regarding Cloudflare v4 API you have to troubleshoot. Depending on how proxy is configured, Internet traffic may appear to the web server as originating from the proxys IP address, instead of the visitors IP address. We now have to add the filters for the jails that we have created. @BaukeZwart Can we get free domain using cloudfare, I got a domain from duckdns and added it nginx reverse proxy but fail2ban is not banning the ip's, can I use cloudfare with free domain and nginx proxy, do you have any config for docker please? i.e. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. However, I still receive a few brute-force attempts regularly although Cloudflare is active. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. F2B is definitely a good improvement to be considered. Generally this is set globally, for all jails, though individual jails can change the action or parameters themselves. LEM current transducer 2.5 V internal reference, Book about a good dark lord, think "not Sauron". @hugalafutro I tried that approach and it works. All I needed to do now was add the custom action file: Its actually pretty simple, I more-or-less copied iptables-multiport.conf and wrapped all the commands in a ssh [emailprotected] '' so that itll start an SSH session, run the one provided command, dump its output to STDOUT, and then exit. Well occasionally send you account related emails. But is the regex in the filter.d/npm-docker.conf good for this? 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. Im at a loss how anyone even considers, much less use Cloudflare tunnels. I am after this (as per my /etc/fail2ban/jail.local): 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. 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. Or can put SSL certificates on your web server and still hide traffic from them even if they are the proxy? Based on matches, it is able to ban ip addresses for a configured time period. So I added the fallback_.log and the fallback-.log to my jali.d/npm-docker.local. 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. It is sometimes a good idea to add your own IP address or network to the list of exceptions to avoid locking yourself out. hopping in to say that a 2fa solution (such the the one authelia brings) would be an amazing addition. Create an account to follow your favorite communities and start taking part in conversations. I'm not all that technical so perhaps someone else can confirm whether this actually works for npm. Some update on fail2ban, since I don't see this happening anytime soon, I created a fail2ban filter myself. Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. @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. It seemed to work (as in I could see some addresses getting banned), for my configuration, but I'm not technically adept enough to say why it wouldn't for you. https://www.authelia.com/ 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. 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. These filter files will specify the patterns to look for within the Nginx logs. Might be helpful for some people that want to go the extra mile. 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. Thanks for contributing an answer to Server Fault! This gist contains example of how you can configure nginx reverse-proxy with autmatic container discovery, SSL certificates 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. So in all, TG notifications work, but banning does not. By default, only the [ssh] jail is enabled. How does a fan in a turbofan engine suck air in? I am having an issue with Fail2Ban and nginx-http-auth.conf filter. nice tutorial but despite following almost everything my fail2ban status is different then the one is give in this tutorial as example. These will be found under the [DEFAULT] section within the file. After this fix was implemented, the DoS stayed away for ever. The following regex does not work for me could anyone help me with understanding it? I'm not an regex expert so any help would be appreciated. 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. Next, we can copy the apache-badbots.conf file to use with Nginx. Finally I am able to ban Ip using fail2ban-docker, npm-docker and emby-docker. Would be great to have fail2ban built in like the linuxserver/letsencrypt Docker container! 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. --The same result happens if I comment out the line "logpath - /var/log/npm/*.log". 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. @vrelk Upstream SSL hosts support is done, in the next version I'll release today. Maybe drop into the Fail2ban container and validate that the logs are present at /var/log/npm. Ive been victim of attackers, what would be the steps to kick them out? Please let me know if any way to improve. As currently set up I'm using nginx Proxy Manager with nginx in Docker containers. After you have surpassed the limit, you should be banned and unable to access the site. Ultimately, it is still Cloudflare that does not block everything imo. Is it save to assume it is the default file from the developer's repository? If the value includes the $query_string variable, then an attack that sends random query strings can cause excessive caching. The main one we care about right now is INPUT, which is checked on every packet a host receives. We can create an [nginx-noscript] jail to ban clients that are searching for scripts on the website to execute and exploit. real_ip_header CF-Connecting-IP; hope this can be useful. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. In NPM Edit Proxy Host added the following for real IP behind Cloudflare in Custom Nginx Configuration: WebSo I assume you don't have docker installed or you do not use the host network for the fail2ban container. I also added a deny rule in nginx conf to deny the Chinese IP and a GeoIP restriction, but I still have these noproxy bans. 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. HAProxy is performing TLS termination and then communicating with the web server with HTTP. Dashboard View Will removing "cloudflare-apiv4" from the config and foregoing the cloudflare specific action.d file run fine? ! Description. Should be usually the case automatically, if you are not using Cloudflare or your service is using custom headers. [Init], maxretry = 3 I needed the latest features such as the ability to forward HTTPS enabled sites. Make sure the forward host is properly set with the correct http scheme and port. 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. If fail to ban blocks them nginx will never proxy them. 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. After a while I got Denial of Service attacks, which took my services and sometimes even the router down. The text was updated successfully, but these errors were encountered: I think that this kind of functionality would be better served by a separate container. 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. With the visitor IP addresses now being logged in Nginxs access and error logs, Fail2ban can be configured. Your blog post seems exactly what I'm looking for, but I'm not sure what to do about this little piece: If you are using Cloudflare proxy, ensure that your setup only accepts requests coming from the Cloudflare CDN network by whitelisting Cloudflare's IPv4 and IPv6 addresses on your server for TCP/80 (HTTP) and TCP/443 (HTTPS). Welcome to your friendly /r/homelab, where techies and sysadmin from everywhere are welcome to share their labs, projects, builds, etc. This worked for about 1 day. 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). 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. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method more Dislike DB Tech Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. 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. Why are non-Western countries siding with China in the UN? The condition is further split into the source, and the destination. Learning the basics of how to protect your server with fail2ban can provide you with a great deal of security with minimal effort. Already on GitHub? The script works for me. 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. If I test I get no hits. Can I implement this without using cloudflare tunneling? By clicking Sign up for GitHub, you agree to our terms of service and If you set up Postfix, like the above tutorial demonstrates, change this value to mail: You need to select the email address that will be sent notifications. This is important - reloading ensures that changes made to the deny.conf file are recognized. https://github.com/clems4ever/authelia, BTW your software is being a total sucess here https://forums.unraid.net/topic/76460-support-djoss-nginx-proxy-manager/. bantime = 360 The card will likely have a 0, and the view will be empty, or should, so we need to add a new host. Really, its simple. Forward hostname/IP: loca IP address of your app/service. Your browser does not support the HTML5