edit: most of your issues stem from having different paths / container / filter names imho, set it up exactly as I posted as that works to try it out, and then you can start adjusting paths and file locations and container names provided you change them in all relevant places. And to be more precise, it's not really NPM itself, but the services it is proxying. But still learning, don't get me wrong. Press J to jump to the feed. Its uh how do I put this, its one of those tools that you will never remember how to use, and there will be a second screen available with either the man page, or some kind souls blog post explaining how to use it. Learning the basics of how to protect your server with fail2ban can provide you with a great deal of security with minimal effort. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. If that chain didnt do anything, then it comes back here and starts at the next rule. Press J to jump to the feed. 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- 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. 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. Some update on fail2ban, since I don't see this happening anytime soon, I created a fail2ban filter myself. Solution: It's setting custom action to ban and unban and also use Iptables forward from forward to f2b-npm-docker, f2b-emby which is more configuring up docker network, my docker containers are all in forward chain network, you can change FOWARD to DOCKER-USER or INPUT according to your docker-containers network. You signed in with another tab or window. These filter files will specify the patterns to look for within the Nginx logs. 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. We can use this file as-is, but we will copy it to a new name for clarity. Any guidance welcome. For example, my nextcloud instance loads /index.php/login. They can and will hack you no matter whether you use Cloudflare or not. Create an account to follow your favorite communities and start taking part in conversations. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. It is sometimes a good idea to add your own IP address or network to the list of exceptions to avoid locking yourself out. Thanks! Maybe someone in here has a solution for this. I'm curious to get this working, but may actually try CrowdSec instead, since the developers officially support the integration into NPM. Install_Nginx. To make modifications, we need to copy this file to /etc/fail2ban/jail.local. Any advice? 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. If fail to ban blocks them nginx will never proxy them. 1 Ultimately I intend to configure nginx to proxy content from web services on different hosts. Requests coming from the Internet will hit the proxy server (HAProxy), which analyzes the request and forwards it on to the appropriate server (Nginx). To influence multiple hosts, you need to write your own actions. 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. LoadModule cloudflare_module. Description. 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. Before that I just had a direct configuration without any proxy. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? I have a question about @mastan30 solution: fail2ban-docker requires that fail2ban itself has to (or must not) be installed on the host machine (dont think, iti is in the container)? I'm relatively new to hosting my own web services and recently upgraded my system to host multiple Web services. I get about twice the amount of bans on my cloud based mailcow mail server, along the bans that mailcow itself facilitates for failed mail logins. 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 would also like to vote for adding this when your bandwidth allows. Already on GitHub? Thanks for contributing an answer to Server Fault! Would be great to have fail2ban built in like the linuxserver/letsencrypt Docker container! Sign up for a free GitHub account to open an issue and contact its maintainers and the community. These will be found under the [DEFAULT] section within the file. It took me a while to understand that it was not an ISP outage or server fail. 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. I would rank fail2ban as a primary concern and 2fa as a nice to have. When a proxy is internet facing, is the below the correct way to ban? However, by default, its not without its drawbacks: Fail2Ban uses iptables First, create a new jail: [nginx-proxy] enabled = true port = http logpath = % Big question: How do I set this up correctly that I can't access my Webservices anymore when my IP is banned? I've been hoping to use fail2ban with my npm docker compose set-up. When started, create an additional chain off the jail name. I've tried both, and both work, so not sure which is the "most" correct. Evaluate your needs and threats and watch out for alternatives. So I added the fallback_.log and the fallback-.log to my jali.d/npm-docker.local. You can use the action_mw action to ban the client and send an email notification to your configured account with a whois report on the offending address. 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:. And to be more precise, it's not really NPM itself, but the services it is proxying. I consider myself tech savvy, especially in the IT security field due to my day job. The DoS went straight away and my services and router stayed up. actionunban = -D f2b- -s -j We need to enable some rules that will configure it to check our Nginx logs for patterns that indicate malicious activity. You can add this to the defaults, frontend, listen and backend sections of the HAProxy config. 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. for reference So as you see, implementing fail2ban in NPM may not be the right place. https://www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o?utm_medium=android_app&utm_source=share&context=3. 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. 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. I am definitely on your side when learning new things not automatically including Cloudflare. 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. Making statements based on opinion; back them up with references or personal experience. Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. I already used Cloudflare for DNS management only since my initial registrar had some random limitations of adding subdomains. But if you After all that, you just need to tell a jail to use that action: All I really added was the action line there. Is there any chance of getting fail2ban baked in to this? However, any publicly accessible password prompt is likely to attract brute force attempts from malicious users and bots. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? This textbox defaults to using Markdown to format your answer. To learn more, see our tips on writing great answers. 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. Google "fail2ban jail nginx" and you should find what you are wanting. 0. edit: The supplied /etc/fail2ban/jail.conf file is the main provided resource for this. This is set by the ignoreip directive. Depends. I'm confused). 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. Now that NginX Proxy Manager is up and running, let's setup a site. Each fail2ban jail operates by checking the logs written by a service for patterns which indicate failed attempts. Or save yourself the headache and use cloudflare to block ips there. 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. Ultimately, it is still Cloudflare that does not block everything imo. Since most people don't want to risk running plex/jellyfin via cloudflare tunnels (or cloudflare proxy). If npm will have it - why not; but i am using crazymax/fail2ban for this; more complexing docker, more possible mistakes; configs, etc; how will be or f2b integrated - should decide jc21. Is fail2ban a better option than crowdsec? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Sure, thats still risky, allowing iptables access like this is always risky, but thats what needs to be done barring some much more complex setups. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? 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. so even in your example above, NPM could still be the primary and only directly exposed service! The thing with this is that I use a fairly large amount of reverse-proxying on this network to handle things like TLS termination and just general upper-layer routing. The main one we care about right now is INPUT, which is checked on every packet a host receives. actionban = iptables -I DOCKER-USER -s -j DROP, actionunban = iptables -D DOCKER-USER -s -j DROP, Actually below the above to be correct after seeing https://docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/. 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). 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? However, you must ensure that only IPv4 and IPv6 IP addresses of the Cloudflare network are allowed to talk to your server. This account should be configured with sudo privileges in order to issue administrative commands. Additionally, how did you view the status of the fail2ban jails? I have disabled firewalld, installed iptables, disabled (renamed) /jail.d/00-firewalld.conf file. Each rule basically has two main parts: the condition, and the action. Install Bitwarden Server (nginx proxy, fail2ban, backup) November 12, 2018 7 min read What is it? If the value includes the $query_string variable, then an attack that sends random query strings can cause excessive caching. Based on matches, it is able to ban ip addresses for a configured time period. Your browser does not support the HTML5