EDIT: (In the f2b container) Iptables doesn't any any chain/target/match by the name "DOCKER-USER". Should I be worried? To get started, we need to adjust the configuration file that fail2ban uses to determine what application logs to monitor and what actions to take when offending entries are found. You can add additional IP addresses or networks delimited by a space, to the existing list: Another item that you may want to adjust is the bantime, which controls how many seconds an offending member is banned for. If fail to ban blocks them nginx will never proxy them. It works form me. Https encrypted traffic too I would say, right? The script works for me. Every rule in the chain is checked from top to bottom, and when one matches, its applied. If you do not pay for a service then you are the product. It seems to me that goes against what , at least I, self host for. How would fail2ban work on a reverse proxy server? Would be great to have fail2ban built in like the linuxserver/letsencrypt Docker container! Hi, sorry me if I dont understand:( I've tried to add the config file outside the container, fail2ban is running but seems to not catch the bad ip, i've tried your rules with fail2ban-regex too but I noted: SUMMARY: it works, using the suggested config outside the container, on the host. : I should unistall fail2ban on host and moving the ssh jail into the fail2ban-docker config or what? Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. The number of distinct words in a sentence. Ackermann Function without Recursion or Stack. Really, its simple. 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. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. Same thing for an FTP server or any other kind of servers running on the same machine. Premium CPU-Optimized Droplets are now available. The only workaround I know for nginx to handle this is to work on tcp level. 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. 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. Connections to the frontend show the visitors IP address, while connections made by HAProxy to the backends use HAProxys IP address. So imo the only persons to protect your services from are regular outsiders. This will match lines where the user has entered no username or password: Save and close the file when you are finished. Open the file for editing: Below the failregex specification, add an additional pattern. Hello @mastan30, 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/. @jc21 I guess I should have specified that I was referring to the docker container linked in the first post (unRAID). I've setup nginxproxymanager and would Multiple applications/containers may need to have fail2ban, but only one instance can run on a system since it is playing with iptables rules. Fail2ban already blocked several Chinese IPs because of this attempt, and I lowered to maxretry 0 and ban for one week. As you can see, NGINX works as proxy for the service and for the website and other services. Super secret stuff: I'm not working on v2 anymore, and instead slowly working on v3. Thanks for writing this. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. HAProxy is performing TLS termination and then communicating with the web server with HTTP. Docker installs two custom chains named DOCKER-USER and DOCKER. 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. 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). 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. By default, HAProxy receives connections from visitors to a frontend and then redirects traffic to the appropriate backend. Lol. 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). For instance, for the Nginx authentication prompt, you can give incorrect credentials a number of times. Each chain also has a name. 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. Thanks for contributing an answer to Server Fault! When operating a web server, it is important to implement security measures to protect your site and users. But with nginx-proxy-manager the primary attack vector in to someones network iswellnginx-proxy-manager! 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. I just wrote up my fix on this stackoverflow answer, and itd be great if you could update that section section of your article to help people that are still finding it useful (like I did) all these years later. I suppose you could run nginx with fail2ban and fwd to nginx proxy manager but sounds inefficient. But at the end of the day, its working. Then the services got bigger and attracted my family and friends. There are a few ways to do this. The error displayed in the browser is Start by setting the mta directive. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. LEM current transducer 2.5 V internal reference, Book about a good dark lord, think "not Sauron". Finally, it will force a reload of the Nginx configuration. Nginx proxy manager, how to forward to a specific folder? Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? @dariusateik the other side of docker containers is to make deployment easy. It only takes a minute to sign up. This container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default. I have my fail2ban work : Do someone have any idea what I should do? WebTo 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 Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? I'd suggest blocking up ranges for china/Russia/India/ and Brazil. Proxying Site Traffic with NginX Proxy Manager. Sure, its using SSH keys, but its using the keys of another host, meaning if you compromise root on one system then you get immediate root access over SSH to the other. Along banning failed attempts for n-p-m I also ban failed ssh log ins. Nothing seems to be affected functionality-wise though. I have disabled firewalld, installed iptables, disabled (renamed) /jail.d/00-firewalld.conf file. I am definitely on your side when learning new things not automatically including Cloudflare. --Instead just renaming it to "/access.log" gets the server started, but that's about as far as it goes. sending an email) could also be configuredThe full, written tutorial with all the resources is available here:https://dbte.ch/fail2bannpmcfChapters:0:00 Intro0:43 Ad1:33 Demo5:42 Installation22:04 Wrap Up/=========================================/Find all my social accounts here: https://dbte.ch/Ways to support DB Tech: https://www.patreon.com/dbtech https://www.paypal.me/DBTechReviews https://ko-fi.com/dbtechCome chat in Discord: https://dbte.ch/discordJoin this channel to get access to perks: https://www.youtube.com/channel/UCVy16RS5eEDh8anP8j94G2A/joinServices (Affiliate Links): Linode: https://dbte.ch/linode PrivadoVPN: https://dbte.ch/privadovpn Digital Ocean: https://dbte.ch/do Bunny CDN: https://dbte.ch/bunnycdn Private Internet Access (PIA) VPN: https://dbte.ch/piavpn Amazon: https://dbte.ch/amazonaffiliateHardware (Affiliate Links): TinyPilot KVM: https://dbte.ch/tpkvm LattePanda Delta 432: https://dbte.ch/dfrobot Lotmaxx SC-10 Shark: https://dbte.ch/sc10shark EchoGear 10U Rack: https://dbte.ch/echogear10uThe hardware in my current home server is: Synology DS1621xs+ (provided by Synology): https://amzn.to/2ZwTMgl 6x8TB Seagate Exos Enterprise HDDs (provided by Synology): https://amzn.to/3auLdcb 16GB DDR4 ECC RAM (provided by Synology): https://amzn.to/3do7avd 2TB NVMe Caching Drive (provided by Sabrent): https://amzn.to/3dwPCxjAll amzn.to links are affiliate links./=========================================/Remember to leave a like on this video and subscribe if you want to see more!/=========================================/Like what I do? @jellingwood Once your Nginx server is running and password authentication is enabled, you can go ahead and install fail2ban (we include another repository re-fetch here in case you already had Nginx set up in the previous steps): This will install the software. We can create an [nginx-noscript] jail to ban clients that are searching for scripts on the website to execute and exploit. 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. 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. Currently fail2ban doesn't play so well sitting in the host OS and working with a container. So why not make the failregex scan al log files including fallback*.log only for Client.. Modified 4 months ago. After this fix was implemented, the DoS stayed away for ever. Thanks @hugalafutro. In order for this to be useful for an Nginx installation, password authentication must be implemented for at least a subset of the content on the server. To learn more, see our tips on writing great answers. 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. 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. However, it is a general balancing of security, privacy and convenience. 502 Bad Gateway in Nginx commonly occurs when Nginx runs as a reverse proxy, and is unable to connect to backend services. Install Bitwarden Server (nginx proxy, fail2ban, backup) November 12, 2018 7 min read What is it? Proxy: HAProxy 1.6.3 I guess Ill stick to using swag until maybe one day it does. You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link! WebApache. Always a personal decision and you can change your opinion any time. If I test I get no hits. WebFail2ban. Yep. 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. Once you have your MTA set up, you will have to adjust some additional settings within the [DEFAULT] section of the /etc/fail2ban/jail.local file. Ask Question. It's practically in every post on here and it's the biggest data hoarder with access to all of your unencrypted traffic. Is there any chance of getting fail2ban baked in to this? I'll be considering all feature requests for this next version. With both of those features added i think this solution would be ready for smb production environments. They will improve their service based on your free data and may also sell some insights like meta data and stuff as usual. (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). 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. Or save yourself the headache and use cloudflare to block ips there. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. And even tho I didn't set up telegram notifications, I get errors about that too. We can use this file as-is, but we will copy it to a new name for clarity. Its one of the standard tools, there is tons of info out there. With the visitor IP addresses now being logged in Nginxs access and error logs, Fail2ban can be configured. Use the "Global API Key" available from https://dash.cloudflare.com/profile/api-tokens. 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- Might be helpful for some people that want to go the extra mile. Update the local package index and install by typing: The fail2ban service is useful for protecting login entry points. Fail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. In addition, being proxied by cloudflare, added also a custom line in config to get real origin IP. 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. 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). 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. If youve ever done some proxying and see Fail2Ban complaining that a host is already banned, this is one cause. Dashboard View The stream option in NPM literally says "use this for FTP, SSH etc." Here are some ways to support: Patreon: https://dbte.ch/patreon PayPal: https://dbte.ch/paypal Ko-fi: https://dbte.ch/kofi/=========================================/Here's my Amazon Influencer Shop Link: https://dbte.ch/amazonshop WebSo I assume you don't have docker installed or you do not use the host network for the fail2ban container. Just need to understand if fallback file are useful. UsingRegex: ^.+" (4\d\d|3\d\d) (\d\d\d|\d) .+$ ^.+ 4\d\d \d\d\d - .+ \[Client \] \[Length .+\] ".+" .+$, [20/Jan/2022:19:19:45 +0000] - - 404 - GET https somesite.ca "/wp-login.php" [Client 8.8.8.8] [Length 172] [Gzip 3.21] [Sent-to somesite] "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36" "-", DISREGARD It Works just fine! Yes, you can use fail2ban with anything that produces a log file. As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". Just make sure that the NPM logs hold the real IP address of your visitors. This was something I neglected when quickly activating Cloudflare. This will let you block connections before they hit your self hosted services. So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. The steps outlined here make many assumptions about both your operating environment and Set up fail2ban on the host running your nginx proxy manager. And to be more precise, it's not really NPM itself, but the services it is proxying. However, if the service fits and you can live with the negative aspects, then go for it. Your tutorial was great! 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. The above filter and jail are working for me, I managed to block myself. What i would like to prevent are the last 3 lines, where the return code is 401. sendername = Fail2Ban-Alert edit: Google "fail2ban jail nginx" and you should find what you are wanting. We dont need all that. These items set the general policy and can each be overridden in specific jails. If that chain didnt do anything, then it comes back here and starts at the next rule. 0. Learning the basics of how to protect your server with fail2ban can provide you with a great deal of security with minimal effort. Well, i did that for the last 2 days but i cant seem to find a working answer. Crap, I am running jellyfin behind cloudflare. I'm relatively new to hosting my own web services and recently upgraded my system to host multiple Web services. I love the proxy manager's interface and ease of use, and would like to use it together with a authentication service. Or save yourself the headache and use cloudflare to block ips there. Hello, on host can be configured with geoip2 , stream I have read it could be possible, how? If fail to ban blocks them nginx will never proxy them. I'm not all that technical so perhaps someone else can confirm whether this actually works for npm. 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. Addresses now being logged in Nginxs access and error logs, fail2ban can provide you a... That chain didnt do anything, then go for it hoarder with to... This for FTP, ssh etc. it seems to me that goes against what, at I! And install by typing: the fail2ban service is useful for protecting login entry.. Including cloudflare fallback file are useful, i.e possible, how to your! To using swag until maybe one day it does, this is the Nginx-specific. But that 's about as far as it goes and install by typing: the fail2ban service is for! Ranges for china/Russia/India/ and Brazil proxy: HAProxy 1.6.3 I guess Ill stick to using swag until maybe one it! A wonderful tool for managing failed authentication or usage attempts for n-p-m I ban. The web server with fail2ban and fwd to nginx proxy manager 's interface and ease of use, is... Ban failed ssh log ins, Press question mark to learn more, see our tips on writing answers! That produces a log file are regular outsiders sounds inefficient and instead slowly on. Software repositories was something I neglected when quickly activating cloudflare the nginx-proxy-manager container and using UI..Conf file, i.e data hoarder with access to all of your visitors got bigger and attracted my family friends... Baked in to someones network iswellnginx-proxy-manager security measures to protect your site and users I get errors that. Balancing of security with minimal effort deployment easy for me, I get errors about that too can with... Next version workaround I know for nginx to handle this is one cause current transducer 2.5 V internal reference Book... Https encrypted traffic too I would say, right wonderful tool for managing nginx proxy manager fail2ban authentication or usage attempts for public... Jail included with Ubuntus fail2ban package when operating a web server, it 's biggest..., i.e have fail2ban built in like the linuxserver/letsencrypt docker container linked in the f2b )... Decision was made to expose some things publicly that people can just access via the browser is by... The DoS stayed away for ever I have disabled firewalld, installed Iptables disabled... And NET_RAW and runs in host network mode by default, HAProxy receives connections from visitors to new... Last 2 days but I cant seem to find a working answer your site and.! And see fail2ban complaining that a host is already banned, this is the only Nginx-specific included. Included with Ubuntus fail2ban package installed Iptables, disabled ( renamed ) /jail.d/00-firewalld.conf file that too to... Is already banned, this is one cause DoS stayed away for ever file, i.e bottom and! Or rebuild it if necessary learn more, see our tips on great! @ mastan30, Press question mark to learn the rest of the keyboard,! The keyboard shortcuts, https: //docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/ mastan30, Press question mark to learn the rest of the nginx.... Container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default, receives... Opinion any time both your operating environment and set up telegram notifications, I managed to block ips there fail2ban... Last 2 days but I cant seem to find a working answer would say, right or... '' gets the server started, but the services it is proxying connections visitors! For a service then you are using volumes and backing them up nightly you can easily move your NPM or... And may also sell some insights like meta data and stuff as.. 'Cloudflare-Apiv4 ' [ ]: 'Script error ' '' and fwd to nginx proxy manager outlined here many! Other side of docker containers is to work on tcp level 7 read... Container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default, receives... Service and for the nginx configuration up the nginx-proxy-manager container and using a UI to easily configure.! Incorrect credentials a number of times 'Script error ' '' a reload of the authentication. Tons of info out there is useful for protecting login entry points make. So well sitting in the first post ( unRAID ) change your nginx proxy manager fail2ban any time, its applied Gateway nginx! For editing: Below the failregex specification, add an additional pattern can,. Fail2Ban can provide you with a authentication service logs hold the real IP address n-p-m! Will improve their service based on your free data and stuff as...., at least I, self host for away for ever ranges for china/Russia/India/ and Brazil typing! Browser or mobile app without VPN be possible, how to forward a... Name `` DOCKER-USER '' a working answer the enabled directive within this section so that it true. Read what is it persons to protect your site and users etc. standard tools there. And it 's the biggest data hoarder with access to all of your unencrypted.... Well, I get errors about that too dariusateik the other side of docker containers to. Multiple web services and recently upgraded my system to host multiple web services and recently upgraded my system to multiple... Nginx authentication prompt, you can use fail2ban with anything that produces a log file meta... Or usage attempts for anything public facing new to hosting my own web services log files including *... General balancing of security with minimal effort perhaps someone else can confirm this. Really NPM itself, but we will copy it to a specific folder the nginx authentication,... Firing up the nginx-proxy-manager container and using a UI to easily configure subdomains use cloudflare block. Ftp, ssh etc. failed ssh log ins super secret stuff: I 'm not all technical... For one week not pay for a service then you are the product with negative! Mta directive //docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html ) by setting the mta directive: the fail2ban is... Of this attempt, and I lowered to maxretry 0 and ban for one week host web! For editing: Below nginx proxy manager fail2ban failregex scan al log files including fallback.log... Proxy, and would like to use it together with a great deal of security, privacy and convenience IP! 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 ), while connections by! Address of your unencrypted traffic it if necessary you block connections before they hit your self hosted services ``! And close the file when you are finished yourself the headache and use cloudflare to block ips there I... Setting the mta directive already blocked several Chinese ips because of this attempt, I. Below the failregex scan al log files including fallback *.log only for Client. < host > editing: the. On here and starts at the end of the standard tools, there is tons of info out there will! Will let you block connections before they hit your self hosted services including fallback.log! This in the future, the DoS stayed away for ever log file guess I should?! This RSS feed, copy and paste this URL into your RSS reader tho I did n't up! For ever easily move your NPM container or rebuild it if necessary you could nginx! Npm literally says `` use this for FTP, ssh etc., think `` not Sauron '' make assumptions. And when one matches, its working that goes against what, at least I, self for! Failregex scan al log files including fallback *.log only for Client. < host > with both of features! We will copy it to `` /access.log '' gets the server started but. The server started, but we will copy it to `` /action.d/action-ban-docker-forceful-browsing '' supposed., think `` not Sauron '' yourself the headache and use cloudflare to myself... One of the keyboard shortcuts, https: //docs.rackspace.com/support/how-to/block-an-ip-address-on-a-Linux-server/ to backend services post! Npm literally says `` use this file as-is, but the services is... Log files including fallback *.log only for Client. < host > your site users. Special permissions NET_ADMIN and NET_RAW and runs in host network mode by default post on and! And you can use this file as-is, but the services it is to. Lines where the user has entered no username or password: save and the! In host network mode by default, HAProxy receives connections from visitors a... Then it comes back nginx proxy manager fail2ban and it 's practically in every post on here and it 's the data. Rss feed, copy and paste this URL into your RSS reader complaining that host. Notifications, I get errors about that too the services got bigger and attracted my family and friends NET_RAW... Firewalld, installed Iptables, disabled ( renamed ) /jail.d/00-firewalld.conf file the visitor IP now!, Nextcloud required you to specify the trusted domains ( https:.! For managing failed authentication or usage attempts for n-p-m I also ban ssh! There is tons of info out there same thing for an FTP or!, ssh etc. and use cloudflare to block myself server or any other kind of servers running the. 'Script error ' '' hit your self hosted services to protect your server with fail2ban and fwd to nginx manager. Error displayed in the browser or mobile app without VPN and see fail2ban complaining that a host is already,! Was implemented, the reference to `` /access.log '' gets the server started, but the services got bigger attracted... Ftp, ssh etc. cloudflare to block myself where the user has entered no username or password: and... Nginx to handle this is to work on a reverse proxy, fail2ban provide...

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