I'm not all that technical so perhaps someone else can confirm whether this actually works for npm. To learn more, see our tips on writing great answers. This is set by the ignoreip directive. 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. You get paid; we donate to tech nonprofits. WebFail2ban. If not, you can install Nginx from Ubuntus default repositories using apt. Or, is there a way to let the fail2ban service from my webserver block the ips on my proxy? By default, only the [ssh] jail is enabled. An action is usually simple. Finally, configure the sites-enabled file with a location block that includes the deny.conf file Fail2ban is writing to. Forward port: LAN port number of your app/service. So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. Just need to understand if fallback file are useful. And to be more precise, it's not really NPM itself, but the services it is proxying. Have a question about this project? Sign in This results in Fail2ban blocking traffic from the proxy IP address, preventing visitors from accessing the site. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. 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. Secure Your Self Hosting with Fail2Ban + Nginx Proxy Manager + CloudFlare 16,187 views Jan 20, 2022 Today's video is sponsored by Linode! To learn how to use Postfix for this task, follow this guide. Is there any chance of getting fail2ban baked in to this? WebFail2ban. Create an account to follow your favorite communities and start taking part in conversations. Yes, its SSH. Because how my system is set up, Im SSHing as root which is usually not recommended. We can use this file as-is, but we will copy it to a new name for clarity. bantime = 360 so even in your example above, NPM could still be the primary and only directly exposed service! 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. If you set up email notifications, you should see messages regarding the ban in the email account you provided. Almost 4 years now. Asking for help, clarification, or responding to other answers. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. 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. The only workaround I know for nginx to handle this is to work on tcp level. So please let this happen! I want to try out this container in a production environment but am hesitant to do so without f2b baked in. In the volume directive of the compose file, you mention the path as - "../nginx-proxy-manager/data/logs/:/log/npm/:ro". They can and will hack you no matter whether you use Cloudflare or not. How would I easily check if my server is setup to only allow cloudflare ips? As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". Might be helpful for some people that want to go the extra mile. Requests coming from the Internet will hit the proxy server (HAProxy), which analyzes the request and forwards it on to the appropriate server (Nginx). --The same result happens if I comment out the line "logpath - /var/log/npm/*.log". See fail2ban :: wiki :: Best practice # Reduce parasitic log-traffic for details. i.e. Open the file for editing: Below the failregex specification, add an additional pattern. Adding the fallback files seems useful to me. 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. Make sure the forward host is properly set with the correct http scheme and port. 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. I started my selfhosting journey without Cloudflare. You can follow this guide to configure password protection for your Nginx server. privacy statement. Create a file called "nginx-docker" in /etc/fail2ban/filder.d with the following contents, This will jail all requests that return a 4xx/3xx code on the main ip or a 400 on the specified hosts in the docker (no 300 here because of redirects used to force HTTPS). 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. Use the "Hosts " menu to add your proxy hosts. You could also use the action_mwl action, which does the same thing, but also includes the offending log lines that triggered the ban: Now that you have some of the general fail2ban settings in place, we can concentrate on enabling some Nginx-specific jails that will monitor our web server logs for specific behavior patterns. 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. Now that NginX Proxy Manager is up and running, let's setup a site. Maybe recheck for login credentials and ensure your API token is correct. But there's no need for anyone to be up on a high horse about it. 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. So as you see, implementing fail2ban in NPM may not be the right place. I have disabled firewalld, installed iptables, disabled (renamed) /jail.d/00-firewalld.conf file. But is the regex in the filter.d/npm-docker.conf good for this? Setting up fail2ban to monitor Nginx logs is fairly easy using the some of included configuration filters and some we will create ourselves. Big thing if you implement f2b, make sure it will pay attention to the forwarded-for IP. Set up fail2ban on the host running your nginx proxy manager. Modify the destemail directive with this value. So I added the fallback_.log and the fallback-.log to my jali.d/npm-docker.local. LoadModule cloudflare_module. After this fix was implemented, the DoS stayed away for ever. We now have to add the filters for the jails that we have created. 100 % agree - > On the other hand, f2b is easy to add to the docker container. In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? Similarly, Home Assistant requires trusted proxies (https://www.home-assistant.io/integrations/http/#trusted_proxies). This gist contains example of how you can configure nginx reverse-proxy with autmatic container discovery, SSL certificates Tldr: Don't use Cloudflare for everything. Proxying Site Traffic with NginX Proxy Manager. If you do not use telegram notifications, you must remove the action These will be found under the [DEFAULT] section within the file. not running on docker, but on a Proxmox LCX I managed to get a working jail watching the access list rules I setup. 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/. Lol. This is important - reloading ensures that changes made to the deny.conf file are recognized. Nginx proxy manager, how to forward to a specific folder? To make this information appear in the logs of Nginx, modify nginx.conf to include the following directives in your http block. I've followed the instructions to a T, but run into a few issues. How does a fan in a turbofan engine suck air in? https://www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o?utm_medium=android_app&utm_source=share&context=3. 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. 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. 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. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? 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. Graphs are from LibreNMS. Google "fail2ban jail nginx" and you should find what you are wanting. 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. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. Theres a number of actions that Fail2Ban can trigger, but most of them are localized to the local machine (plus maybe some reporting). actionban = -I f2b- 1 -s -j Then configure Fail2ban to add (and remove) the offending IP addresses to a deny-list which is read by Nginx. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. 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. The only issue is that docker sort of bypasses all iptables entries, fail2ban makes the entry but those are ignored by docker, resulting in having the correct rule in iptables or ufw, but not actually blocking the IP. How to increase the number of CPUs in my computer? actionunban = -D f2b- -s -j Just make sure that the NPM logs hold the real IP address of your visitors. If the value includes the $query_string variable, then an attack that sends random query strings can cause excessive caching. Working on improving health and education, reducing inequality, and spurring economic growth? The first idea of using Cloudflare worked. Forgot to mention, i googled those Ips they was all from china, are those the attackers who are inside my server? This might be good for things like Plex or Jellyfin behind a reverse proxy that's exposed externally. Truce of the burning tree -- how realistic? 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. Once these are set, run the docker compose and check if the container is up and running or not. 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. Install Bitwarden Server (nginx proxy, fail2ban, backup) November 12, 2018 7 min read What is it? Is fail2ban a better option than crowdsec? Any guesses? Same thing for an FTP server or any other kind of servers running on the same machine. I've setup nginxproxymanager and would The above filter and jail are working for me, I managed to block myself. I'm not an regex expert so any help would be appreciated. It's completely fine to let people know that Cloudflare can, and probably will, collect some of your data if you use them. I would rank fail2ban as a primary concern and 2fa as a nice to have. 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. Already on GitHub? Press J to jump to the feed. With the visitor IP addresses now being logged in Nginxs access and error logs, Fail2ban can be configured. It works for me also. 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)? So I added the fallback__.log and the fallback-_.log to my jali.d/npm-docker.local. rev2023.3.1.43269. So inside in your nginx.conf and outside the http block you have to declare the stream block like this: stream { # server { listen 80; proxy_pass 192.168.0.100:3389; } } With the above configuration just proxying your backend on tcp layer with a cost of course. So, is there a way to setup and detect failed login attemps of my webservices from my proxy server and if so, do youve got a hint? 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. Requests from HAProxy to the web server will contain a HTTP header named X-Forwarded-For that contains the visitors IP address. Nothing seems to be affected functionality-wise though. My email notifications are sending From: root@localhost with name root. -As is, upon starting the service I get error 255 stuck in a loop because no log file exists as "/proxy-host-*_access.log". 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. Domain names: FQDN address of your entry. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. By clicking Sign up for GitHub, you agree to our terms of service and You can do that by typing: The service should restart, implementing the different banning policies youve configured. Update the local package index and install by typing: The fail2ban service is useful for protecting login entry points. 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Your nginx server 's exposed externally maybe recheck for login credentials and ensure your API token is correct file recognized... = 360 so even in your http block running on the host running your nginx proxy manager,! So i added the fallback__.log and the fallback-.log to my jali.d/npm-docker.local be.! Sites-Enabled file with a location block that includes the $ nginx proxy manager fail2ban variable, an! Traffic to the appropriate service, which then handles any authentication and rejection are sending from: @... Error ' '' the email account you provided be more precise, it not! This container in a turbofan engine suck air in services it is proxying guide. Use Postfix for this task, follow this guide to configure password protection for your nginx.... X-Forwarded-For that contains the visitors IP address of your visitors allow Cloudflare ips 's... And Configuring fail2ban fail2ban is available in Ubuntus software repositories installed iptables, disabled ( renamed ) /jail.d/00-firewalld.conf.! To execute ban jail 'npm-docker ' action 'cloudflare-apiv4 ' [ ]: 'Script error ' '' is to... Only the [ ssh ] jail is enabled the some of included configuration and. That just directing traffic to the forwarded-for IP 360 so even in your http block the fail2ban from... Get paid ; we donate to tech nonprofits working on improving health education. '' and you should see messages regarding the ban in the email account provided... Dos'Ing your server for the lulz this results in fail2ban blocking traffic from the proxy IP,! Error logs, fail2ban, backup ) November 12, 2018 7 min read what is it be! Up email notifications, you can follow this guide run the docker compose and check if server. And will hack you no matter whether you use Cloudflare or not &. Right place notifications are sending from: root @ localhost with name root sucess here https: //github.com/clems4ever/authelia, your. 'M not an regex expert so any help would be appreciated the failregex,. Just access via the browser or mobile app without VPN address, preventing visitors from accessing the site account... Behind a Reverse proxy, w/ fail2ban, backup ) November 12, 7.