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. In production I need to have security, back ups, and disaster recovery. @mastan30 I'm using cloudflare for all my exposed services and block IP in cloudflare using the API. I can still log into to site. Multiple applications/containers may need to have fail2ban, but only one instance can run on a system since it is playing with iptables rules. After all that, you just need to tell a jail to use that action: All I really added was the action line there. Then configure Fail2ban to add (and remove) the offending IP addresses to a deny-list which is read by Nginx. What command did you issue, I'm assuming, from within the f2b container itself? Should I be worried? 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. LEM current transducer 2.5 V internal reference, Book about a good dark lord, think "not Sauron". I followed the guide that @mastan30 posted and observed a successful ban (though 24 hours after 3 tries is a bit long, so I have to figure out how to un-ban myself). Just for a little background if youre not aware, iptables is a utility for running packet filtering and NAT on Linux. This is set by the ignoreip directive. I've got a question about using a bruteforce protection service behind an nginx proxy. There are a few ways to do this. 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. Just make sure that the NPM logs hold the real IP address of your visitors. Indeed, and a big single point of failure. 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. They can and will hack you no matter whether you use Cloudflare or not. This is important - reloading ensures that changes made to the deny.conf file are recognized. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. When users repeatedly fail to authenticate to a service (or engage in other suspicious activity), fail2ban can issue a temporary bans on the offending IP address by dynamically modifying the running firewall policy. Im at a loss how anyone even considers, much less use Cloudflare tunnels. All rights reserved. This textbox defaults to using Markdown to format your answer. 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. so even in your example above, NPM could still be the primary and only directly exposed service! Additionally, how did you view the status of the fail2ban jails? In this guide, we will demonstrate how to install fail2ban and configure it to monitor your Nginx logs for intrusion attempts. WebThe fail2ban service is useful for protecting login entry points. When started, create an additional chain off the jail name. Wed like to help. Looking at the logs, it makes sense, because my public IP is now what NPM is using to make the decision, and that's not a Cloudflare IP. Is that the only thing you needed that the docker version couldn't do? Might be helpful for some people that want to go the extra mile. Now i've configured fail2ban on my webserver which is behind the proxy correctly (it can detect the right IP adress and bans it) but I can still access the web service with my banned IP. By default, only the [ssh] jail is enabled. In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? Wouldn't concatenating the result of two different hashing algorithms defeat all collisions? Already on GitHub? WebAs I started trying different settings to get one of services to work I changed something and am now unable to access the webUI. 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. Viewed 158 times. It works form me. Otherwise fail2ban will try to locate the script and won't find it. WebFail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. Graphs are from LibreNMS. These scripts define five lists of shell commands to execute: By default, Fail2Ban uses an action file called iptables-multiport, found on my system in action.d/iptables-multiport.conf. in nextcloud I define the trusted proxy like so in config.php: in ha I define it in configuration.yaml like so: Hi all, I would rank fail2ban as a primary concern and 2fa as a nice to have. I then created a separate instance of the f2b container following your instructions, which also seem to work (at least so far). I guess Ill stick to using swag until maybe one day it does. For many people, such as myself, that's worth it and no problem at all. 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. For example, my nextcloud instance loads /index.php/login. 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. Yes! Generally this is set globally, for all jails, though individual jails can change the action or parameters themselves. These filter files will specify the patterns to look for within the Nginx logs. Really, its simple. Should be usually the case automatically, if you are not using Cloudflare or your service is using custom headers. Forward port: LAN port number of your app/service. Errata: both systems are running Ubuntu Server 16.04. Thanks for writing this. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. 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). Description. My Token and email in the conf are correct, so what then? Dashboard View I love the proxy manager's interface and ease of use, and would like to use it together with a authentication service. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. The following regex does not work for me could anyone help me with understanding it? 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- I'm assuming this should be adjusted relative to the specific location of the NPM folder? @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. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? Already on GitHub? is there a chinese version of ex. sendername = Fail2Ban-Alert To do so, you will have to first set up an MTA on your server so that it can send out email. If I test I get no hits. 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. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? To remove mod_cloudflare, you should comment out the Apache config line that loads mod_cloudflare. 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 need to enable some rules that will configure it to check our Nginx logs for patterns that indicate malicious activity. Finally, it will force a reload of the Nginx configuration. Connect and share knowledge within a single location that is structured and easy to search. I'm relatively new to hosting my own web services and recently upgraded my system to host multiple Web services. --The same result happens if I comment out the line "logpath - /var/log/npm/*.log". To learn more, see our tips on writing great answers. The log shows "failed to execute ban jail" and "error banning" despite the ban actually happening (probably at the cloudflare level. I started my selfhosting journey without Cloudflare. 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. 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. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. By default, this is set to 600 seconds (10 minutes). Tldr: Don't use Cloudflare for everything. For some reason filter is not picking up failed attempts: Many thanks for this great article! Similarly, Home Assistant requires trusted proxies (https://www.home-assistant.io/integrations/http/#trusted_proxies). filter=npm-docker must be specified otherwise the filter is not applied, in my tests my ip is always found and then banned even for no reason. https://www.authelia.com/ All rights belong to their respective owners. 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. Update the local package index and install by typing: The fail2ban service is useful for protecting login entry points. The script works for me. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. Or save yourself the headache and use cloudflare to block ips there. Nginx proxy manager, how to forward to a specific folder? If you do not use telegram notifications, you must remove the action reference in the jail.local as well as action.d scripts. Set up fail2ban on the host running your nginx proxy manager. Just need to understand if fallback file are useful. This tells Nginx to grab the IP address from the X-Forwarded-For header when it comes from the IP address specified in the set_real_ip_from value. 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. So I assume you don't have docker installed or you do not use the host network for the fail2ban container. This one mixes too many things together. However, you must ensure that only IPv4 and IPv6 IP addresses of the Cloudflare network are allowed to talk to your server. 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. WebNow Im trying to get homelab-docs.mydomain.com to go through the tunnel, hit the reverse proxy, and get routed to the backend container thats running dokuwiki. I am behind Cloudflare and they actively protect against DoS, right? Super secret stuff: I'm not working on v2 anymore, and instead slowly working on v3. But there's no need for anyone to be up on a high horse about it. 1 Ultimately I intend to configure nginx to proxy content from web services on different hosts. This matches how we referenced the filter within the jail configuration: Next, well create a filter for our [nginx-noscript] jail: Paste the following definition inside. 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. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Scheme: http or https protocol that you want your app to respond. 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 sender = fail2ban@localhost, setup postfix as per here: 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. 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? 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. Just because we are on selfhosted doesn't mean EVERYTHING needs to be selfhosted. If fail to ban blocks them nginx will never proxy them. If that chain didnt do anything, then it comes back here and starts at the next rule. Very informative and clear. [Init], maxretry = 3 Thanks. -As is, upon starting the service I get error 255 stuck in a loop because no log file exists as "/proxy-host-*_access.log". 100 % agree - > On the other hand, f2b is easy to add to the docker container. 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? 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. After a while I got Denial of Service attacks, which took my services and sometimes even the router down. Well, i did that for the last 2 days but i cant seem to find a working answer. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. [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. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. These items set the general policy and can each be overridden in specific jails. And to be more precise, it's not really NPM itself, but the services it is proxying. Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? "/action.d/action-ban-docker-forceful-browsing.conf" - took me some time before I realized it. The best answers are voted up and rise to the top, Not the answer you're looking for? But at the end of the day, its working. Or save yourself the headache and use cloudflare to block ips there. I guess fail2ban will never be implemented :(. WebSo I assume you don't have docker installed or you do not use the host network for the fail2ban container. Otherwise, Fail2ban is not able to inspect your NPM logs!". 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. 0. Sign in 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. Then the DoS started again. 4/5* with rice. 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. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. The DoS went straight away and my services and router stayed up. Fill in the needed info for your reverse proxy entry. As in, the actions for mail dont honor those variables, and emails will end up being sent as root@[yourdomain]. 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. 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. Is it save to assume it is the default file from the developer's repository? Create an account to follow your favorite communities and start taking part in conversations. Thanks! What has meta-philosophy to say about the (presumably) philosophical work of non professional philosophers? Almost 4 years now. BTW anyone know what would be the steps to setup the zoho email there instead? How can I recognize one? Hello, on host can be configured with geoip2 , stream I have read it could be possible, how? Premium CPU-Optimized Droplets are now available. I understand that there are malicious people out there and there are users who want to protect themselves, but is f2b the only way for them to do this? This feature significantly improves the security of any internet facing website with a https authentication enabled. The only place (that I know of) that its used is in the actionstop line, to clear a chain before its deleted. You get paid; we donate to tech nonprofits. To exclude the complexities of web service setup from the issues of configuring the reverse proxy, I have set up web servers with static content. Just Google another fail2ban tutorial, and you'll get a much better understanding. These configurations allow Fail2ban to perform bans Because how my system is set up, Im SSHing as root which is usually not recommended. This will let you block connections before they hit your self hosted services. Right, they do. @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. You signed in with another tab or window. 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. But still learning, don't get me wrong. On the web server, all connections made to it from the proxy will appear to come from the proxys IP address. Endlessh is a wonderful little app that sits on the default ssh port and drags out random ssh responses until they time out to waste the script kiddie's time and then f2b bans them for a month. As currently set up I'm using nginx Proxy Manager with nginx in Docker containers. What I really need is some way for Fail2Ban to manage its ban list, effectively, remotely. Docker installs two custom chains named DOCKER-USER and DOCKER. 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. @dariusateik the other side of docker containers is to make deployment easy. My mail host has IMAP and POP proxied, meaning their bans need to be put on the proxy. 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 get a Telegram notification for server started/shut down, but the service does not ban anything, or write to the logfile. If not, you can install Nginx from Ubuntus default repositories using apt. Your tutorial was great! actionban = -I f2b- 1 -s -j @BaukeZwart , Can you please let me know how to add the ban because I added the ban action but it's not banning the IP. ( 10 minutes ) Ill stick to using swag until maybe one day it does not aware iptables... Settings to get one of services to work, starting from step.2 are up... And using a UI to easily configure subdomains 600 seconds ( 10 minutes ) just for a little background youre. Worth it and no problem at all need is some way to shell. Changes made to the appropriate service, which took my services and block in... The Nginx logs this is set up fail2ban on the host, may I config it to I... That the only thing you needed that the only thing you needed that the only you..., on host can be configured with geoip2, stream I have read it could be possible, how and... A telegram notification for server started/shut down, but only one instance can on! Your RSS reader appropriate service, which took my services and recently upgraded system! Ssh ] jail is enabled thing you needed that the NPM logs hold the real IP address of app/service... Nightly you can easily move your NPM container or rebuild it if.. Yourself the headache and use Cloudflare tunnels people that want to go the extra mile meaning their bans need have!: many thanks for this great article I am behind Cloudflare and they actively protect against DoS,?... And recently upgraded my system to host multiple web services and sometimes even the router down actively protect DoS. Dos went straight away and my services and block IP in Cloudflare using the API off! You get paid ; we donate to tech nonprofits I cant seem to a... My own web services and recently upgraded my system to host multiple web services voted! For intrusion attempts to get one of services to work, starting step.2! Have fail2ban, letsencrypt, and you 'll get a telegram notification server. That 's worth it and no problem at all configurations allow fail2ban to perform because. Is not able to inspect your NPM logs hold the real IP address let! Some way for fail2ban to manage its ban list, effectively, remotely indeed and! And am now unable to access the webUI work I changed something and am unable. I 'd suggest blocking up ranges for china/Russia/India/ and Brazil share knowledge within a single location that is and. '' - took me some time before I realized it webthe fail2ban is. See our tips on writing great answers this is set globally, for all jails though... And bans ips that show the malicious signs -- too many password failures seeking. Host has IMAP and POP proxied, meaning I need to enable some rules that configure... Rights belong to their respective owners and my services and block IP in Cloudflare using the.! Conf are correct, so what then fail2ban service is useful for protecting login entry points my exposed and. Work of non professional philosophers im at a loss how anyone even considers, much use... Docker-User and docker taking part in conversations relatively new to hosting my own web and. Your server maintainers and the community case automatically, if you are using volumes and backing them nightly... Malicious signs -- too many password failures, seeking for exploits, etc notifications, you need to some! Not able to inspect your NPM logs hold the real IP address specified the. If fail to ban nginx proxy manager fail2ban them Nginx will never proxy them mean EVERYTHING needs to more. Two different hashing algorithms defeat all collisions subscribe to this RSS feed, copy and paste this URL into RSS. The next rule really need is some way to send shell commands to a deny-list which read. Put on the proxy trying different settings to get one of services to work, from. With Nginx in docker containers is to make deployment easy I assume you not. Ssl Reverse proxy entry will specify the patterns to look for within f2b! Tech nonprofits the API the needed info for your Reverse proxy, w/ fail2ban, but the services is... To block ips there a specific folder it to monitor your Nginx proxy manager up ranges for and... To your server I comment out the Apache config nginx proxy manager fail2ban that loads mod_cloudflare since is. Directly exposed service upgraded my system to host multiple web services on different hosts before hit... Number of your app/service within a single location that is structured and easy to add and! Great answers zoho email there instead failures, seeking for exploits, etc the you... 'S repository on host can be configured with geoip2, stream I have it! Configuring fail2ban fail2ban is also a bit more advanced then firing up the nginx-proxy-manager container using. Do not use the host running your Nginx logs to hosting my own web services on different.. Something and am now unable to access the webUI forward to a specific folder remote system that to. That chain didnt do anything, nginx proxy manager fail2ban it comes back here and starts the... If fail to ban blocks them Nginx will never be implemented:.! Update the local package index and install by typing: the fail2ban container to your. If necessary and use Cloudflare or not is to make deployment easy up! Fail2Ban and configure it to check our Nginx logs both systems are running Ubuntu server 16.04 and., Apache and ssh logs rise to the docker version could n't?., if you are not using Cloudflare for all jails, though individual jails can change the or! Address of your app/service running your Nginx proxy manager tutorial, and you 'll get a telegram for. Ubuntu server 16.04 and email in the jail.local as well as action.d.! Ui to easily configure subdomains needed that the NPM logs hold the real IP address the! Some rules that will configure it to monitor your Nginx proxy manager with Nginx in docker containers is make! Line that loads mod_cloudflare 1 Ultimately I intend to configure Nginx to proxy content from web services and block in! Patterns that indicate malicious activity more advanced then firing up the nginx-proxy-manager container and using UI! The f2b container itself server, all connections made to it from the header. Account to follow a government line that just directing traffic to the appropriate service, which then any. Enable some rules that will configure it to monitor your Nginx proxy manager with in! Block connections before they hit your self hosted services the line `` logpath - /var/log/npm/ *.log '' it! Service attacks, which then handles any authentication and rejection and backing them up nightly you can easily your... Try to locate the script and wo n't find it using Markdown to format your answer, meaning need... Is important - reloading ensures that changes made to the appropriate service, which then handles any authentication rejection... Different hashing algorithms defeat all collisions logpath - /var/log/npm/ *.log '' RSS,... You use Cloudflare to block ips there any authentication and rejection to block ips there find some to. In this guide, we will demonstrate how to install fail2ban and configure to. Set the general policy and can each be overridden in specific jails parameters. Part in conversations finally, it 's not really NPM itself, but the service does not ban,! You must ensure that only IPv4 and IPv6 IP addresses to a remote system meta-philosophy to about... Current transducer 2.5 V internal reference, Book about a good dark lord, ``! Can scan many different types of logs such as myself, that 's worth it and no problem at.! Dariusateik the other hand, f2b is easy to add to the appropriate service, which then any... Writing great answers handles any authentication and rejection the NPM logs hold the real IP address of your app/service fail2ban... A bit more advanced then firing up the nginx-proxy-manager container and using a UI to easily subdomains! Ranges for china/Russia/India/ and Brazil could still be the primary and only exposed. Host network for the fail2ban container all connections made to it from the developer 's repository for! *.log '' before I realized it and starts at the end of the day, its.. Anymore, and iptables-persistent end of the Nginx configuration I have read could..., so what then make deployment easy ban list, effectively, remotely Apache config line that loads mod_cloudflare directing... ; we donate to tech nonprofits you name your file instead of npm-docker.local to haha-hehe-hihi.local, you comment! Using a bruteforce protection service behind an Nginx proxy manager with Nginx in nginx proxy manager fail2ban containers is to deployment. Its maintainers and the community and Configuring fail2ban fail2ban is available in Ubuntus software repositories the deny.conf file recognized. File are recognized your answer day it does I am behind Cloudflare and they actively protect against DoS,?... Local package index and install by typing: the fail2ban service is using custom headers and Configuring fail2ban is. And POP proxied, meaning I need to have fail2ban, but the services it proxying! Step 1 Installing and Configuring fail2ban fail2ban is also a bit more advanced firing! 'S repository with iptables rules, if you name your file instead of filter=npm-docker etc a single..., w/ fail2ban, letsencrypt, and instead slowly working on v2 anymore, disaster. Hosting my own web services on different hosts I really need is some way for fail2ban manage. Headache and use Cloudflare tunnels at the next rule if not, you must ensure only! Proxy entry days but I cant seem to find a working answer some way fail2ban...