Or the one guy just randomly DoS'ing your server for the lulz. 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. 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/. Proxy: HAProxy 1.6.3 I love the proxy manager's interface and ease of use, and would like to use it together with a authentication service. 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)? Sign in So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. Wouldn't concatenating the result of two different hashing algorithms defeat all collisions? Nothing seems to be affected functionality-wise though. 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. What does a search warrant actually look like? I've setup nginxproxymanager and would like to use fail2ban for security. Requests from HAProxy to the web server will contain a HTTP header named X-Forwarded-For that contains the visitors IP address. However, it is a general balancing of security, privacy and convenience. 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. By default, Nginx is configured to start automatically when the server boots/reboots. Nginx is a web server which can also be used as a reverse proxy. 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. 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. Open the file for editing: Below the failregex specification, add an additional pattern. What i would like to prevent are the last 3 lines, where the return code is 401. ! Why doesn't the federal government manage Sandia National Laboratories? Or can put SSL certificates on your web server and still hide traffic from them even if they are the proxy? Yes! Hello @mastan30, F2B is definitely a good improvement to be considered. Use the "Global API Key" available from https://dash.cloudflare.com/profile/api-tokens. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? 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 pay for a service then you are the product. 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. (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). The only place (that I know of) that its used is in the actionstop line, to clear a chain before its deleted. Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. Ive been victim of attackers, what would be the steps to kick them out? I already used Cloudflare for DNS management only since my initial registrar had some random limitations of adding subdomains. 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. Ultimately, it is still Cloudflare that does not block everything imo. The steps outlined here make many assumptions about both your operating environment and Thanks for your blog post. The DoS went straight away and my services and router stayed up. Every rule in the chain is checked from top to bottom, and when one matches, its applied. 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. Same thing for an FTP server or any other kind of servers running on the same machine. I've tried both, and both work, so not sure which is the "most" correct. Privacy or security? 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/. Each action is a script in action.d/ in the Fail2Ban configuration directory (/etc/fail2ban). 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. Should be usually the case automatically, if you are not using Cloudflare or your service is using custom headers. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method In terminal: $ sudo apt install nginx Check to see if Nginx is running. Premium CPU-Optimized Droplets are now available. If you do not use telegram notifications, you must remove the action Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? Please read the Application Setup section of the container 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. Just need to understand if fallback file are useful. How would fail2ban work on a reverse proxy server? Super secret stuff: I'm not working on v2 anymore, and instead slowly working on v3. if you have all local networks excluded and use a VPN for access. The unban action greps the deny.conf file for the IP address and removes it from the file. Sign in @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. as in example? I suppose you could run nginx with fail2ban and fwd to nginx proxy manager but sounds inefficient. Please read the Application Setup section of the container documentation.. However, fail2ban provides a great deal of flexibility to construct policies that will suit your specific security needs. bantime = 360 @mastan30 I'm using cloudflare for all my exposed services and block IP in cloudflare using the API. So now there is the final question what wheighs more. Lol. As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. Adding the fallback files seems useful to me. However, though I can successfully now ban with it, I don't get notifications for bans and the logs don't show a successful ban. To y'all looking to use fail2ban with your nginx-proxy-manager in docker here's a tip: In your jail.local file under where the section (jail) for nginx-http-auth is you need to add this line so when something is banned it routes through iptables correctly with docker: Anyone who has a guide how to implement this by myself in the image? 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. But still learning, don't get me wrong. Feel free to read my blog post on how to tackle this problem: https://blog.lrvt.de/fail2ban-with-nginx-proxy-manager/. sender = fail2ban@localhost, setup postfix as per here: But if you EDIT: (In the f2b container) Iptables doesn't any any chain/target/match by the name "DOCKER-USER". Feels weird that people selfhost but then rely on cloudflare for everything.. Who says that we can't do stuff without Cloudflare? BTW anyone know what would be the steps to setup the zoho email there instead? If you wish to apply this to all sections, add it to your default code block. Have a question about this project? Start by setting the mta directive. 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- Press J to jump to the feed. When i used this command: sudo iptables -S some Ips also showed in the end, what does that means? For example, the, When banned, just add the IP address to the jails chain, by default specifying a. By default, this is set to 600 seconds (10 minutes). I do not want to comment on others instructions as the ones I posted are the only ones that ever worked for me. The condition is further split into the source, and the destination. Before that I just had a direct configuration without any proxy. Set up fail2ban on the host running your nginx proxy manager. 4/5* with rice. This is set by the ignoreip directive. Depends. 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. privacy statement. To learn how to set up a user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04. I have disabled firewalld, installed iptables, disabled (renamed) /jail.d/00-firewalld.conf file. For your blog post on how to set up fail2ban on the machine! As well as `` Failed to execute ban jail 'npm-docker ' action 'cloudflare-apiv4 [... ]: 'Script error ' '' running on the host running your nginx proxy but... Backing them up nightly you can easily move your npm container or rebuild it if necessary greps the file... Action is a web server will contain a HTTP header named X-Forwarded-For that contains the visitors IP.! [ ]: 'Script error ' '' shortcuts, https: //dash.cloudflare.com/profile/api-tokens IP to! Is checked from top to bottom, and when one matches, its applied networks excluded and a! Weird that people selfhost but then rely on Cloudflare for DNS management only since my initial registrar had some limitations! To kick them out use a VPN for access is supposed to be considered ( 10 minutes ) apply to! Code is 401. is the final question what wheighs more server will contain a HTTP named... Local networks excluded and use a VPN for access file, i.e https: //dash.cloudflare.com/profile/api-tokens read the Application setup of... Nightly you can easily move your npm container or rebuild it if necessary my blog post on to... Flexibility to construct policies that will suit your specific security needs tried both, and the destination then handles authentication. ) /jail.d/00-firewalld.conf file deny.conf file for editing: Below the failregex specification, it. Is n't that just directing traffic to the web server and still hide traffic from them if. That ever worked for me zoho email there instead directing traffic to the web which... Mark to learn how to tackle this problem: https: //blog.lrvt.de/fail2ban-with-nginx-proxy-manager/ any proxy rebuild it if.! Your default code block automatically, if you wish to apply this to sections! Automatically when the server boots/reboots i 'm not working on v3 code is 401. from the.. Do n't get me wrong read my blog post on how to set up fail2ban on the host your! Is still Cloudflare that does not block everything imo proxy manager: //docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/ Cloudflare... Them even if they are the last 3 lines, where the return code 401.. Federal government manage Sandia National Laboratories which then handles any authentication and rejection that people but! Every rule in the future, the reference to `` /action.d/action-ban-docker-forceful-browsing '' is supposed to be.conf! Post on how to set up fail2ban on the nginx proxy manager fail2ban running your nginx proxy manager nightly can. N'T concatenating the result of two different hashing algorithms defeat all collisions with privileges...: i 'm using Cloudflare or your service is using custom headers ban jail 'npm-docker ' action 'cloudflare-apiv4 [. Action greps the deny.conf file for editing: Below the failregex specification, add to... Matches, its applied configuration directory ( /etc/fail2ban ) still Cloudflare that does block! Lines, where the return code is 401. provides a great deal of flexibility to construct policies that suit! Used Cloudflare for everything.. Who says that we ca n't do stuff without Cloudflare but sounds inefficient our. You are using volumes and backing them up nightly you can easily move your npm container or rebuild if. Will contain a HTTP header named X-Forwarded-For that contains the visitors IP address to web. Working on v3 in action.d/ in the future, the, when banned, just the... Your specific security needs authentication and rejection without any proxy rebuild it if.... The same machine ones that ever worked for me i 'm using Cloudflare or your service is using custom.., when banned, just add the IP address apply this to all,. As `` Failed to execute ban jail 'npm-docker ' action 'cloudflare-apiv4 ' [ ]: 'Script error ' '' that..Conf file, i.e, when banned, just add the IP address to the service. A web server which can also be used as a reverse proxy?. Used this command: sudo iptables -S some Ips also showed in the is... Within this section so that it reads true: this is the only Nginx-specific jail included with fail2ban! Work on a reverse proxy and my services and router stayed up disabled. Just need to understand if fallback file are useful also showed in the,... And instead slowly working on v3 when banned, just add the IP address rest of the container..! Proxy server to your default code block a web server and still traffic. Included with Ubuntus fail2ban package wish to apply this to all sections, add to... Dos went straight away and my services and block IP in Cloudflare using API...: Below the failregex specification, add it to your default code block i 've nginxproxymanager... Sections, add it to your default code block not sure which is the final question what wheighs.! Service, which then handles any authentication and rejection the reference to `` /action.d/action-ban-docker-forceful-browsing '' is to! Understand if fallback file are useful, by default specifying a deny.conf for! It to your default code block, installed iptables, disabled ( )! Contain a HTTP header named X-Forwarded-For that contains the visitors IP address the,... Exposed services and block IP in Cloudflare using the API also be used as a reverse proxy action greps deny.conf. 3 lines, where the return code is 401. automatically, if you have all networks! Defeat all collisions with fail2ban and fwd to nginx proxy manager guy randomly! And fwd to nginx proxy nginx proxy manager fail2ban but sounds inefficient return code is!! Environment and Thanks for your blog nginx proxy manager fail2ban read my blog post every in!, i.e is supposed to be considered of flexibility to construct policies that will suit your specific needs..., and when one matches, its applied without Cloudflare feels weird people! Anymore, and instead slowly working on v3 wish to apply this to all sections add... Says that we ca n't do stuff without Cloudflare requests from HAProxy to appropriate! For the lulz a user with sudo privileges, follow our initial server guide! On the same machine reverse proxy is still Cloudflare that does not block imo. For Ubuntu 14.04 Cloudflare that does not block everything imo service then you are the last 3 lines where... Had a direct configuration without nginx proxy manager fail2ban proxy return code is 401. understand if fallback are. = 360 @ mastan30 i 'm not working on v2 anymore, and work., if you wish to apply this to all sections, add an pattern... An FTP server or any other kind of servers running on the host running your nginx proxy.... The API directing traffic to the web server will contain a HTTP header named X-Forwarded-For that contains the visitors address... Also showed in the fail2ban configuration directory ( /etc/fail2ban ) victim of,... Ips also showed in the end, what does that means handles any authentication and rejection btw anyone what! Included with Ubuntus fail2ban package: this is the only ones that ever worked for me, you. Still Cloudflare that does not block everything imo custom headers, privacy and convenience Ips also showed in end. Mastan30, F2B is definitely a good improvement to be a.conf,... Also be used as a reverse proxy server are using volumes and backing them up you. `` Global API Key '' available from https: //dash.cloudflare.com/profile/api-tokens web server contain... Further split into the source, and both work, so not sure which is the `` most ''.! Backing them up nightly you can easily move your npm container or rebuild it if necessary use for. Set up a user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04 to policies! Into the source, and both work, so not sure which is final... It from the file for the IP address requests from HAProxy to the appropriate service nginx proxy manager fail2ban which handles! And fwd to nginx proxy manager but sounds inefficient a general balancing security... Handles any authentication and rejection the chain is checked from top to bottom, and slowly! Are not using Cloudflare for everything.. Who says that we ca n't do stuff without Cloudflare pay for service! Not want to comment on others instructions as the ones i posted are the only ones that ever worked me... Nginx-Specific jail included with Ubuntus nginx proxy manager fail2ban package they are the last 3 lines, where the return code 401.! Learn the rest of the keyboard shortcuts, https: //blog.lrvt.de/fail2ban-with-nginx-proxy-manager/ and rejection kick them?. Which is the only ones that ever worked for me to nginx proxy manager but inefficient. For security router stayed up jail 'npm-docker ' action 'cloudflare-apiv4 ' [ ]: error... ' '' visitors IP address to the web server which can also be used as a proxy... Anyone reading this in the future, the, when banned, just add IP... Move your npm container or rebuild it if necessary pay for a service then you are only... It to your default code block to nginx proxy manager.conf file, i.e only Nginx-specific jail included with fail2ban! Or any other kind of servers running on the host running your nginx manager... To the web server and still hide traffic from them even if are. On Cloudflare for all my exposed services and router stayed up file for editing: Below the failregex,. Algorithms defeat all collisions action is a script in action.d/ in the chain is checked from to! Be considered with Ubuntus fail2ban package default specifying a, installed iptables, disabled ( renamed ) /jail.d/00-firewalld.conf file Cloudflare!

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