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. When operating a web server, it is important to implement security measures to protect your site and users. How would fail2ban work on a reverse proxy server? Yep. Or save yourself the headache and use cloudflare to block ips there. Connect and share knowledge within a single location that is structured and easy to search. To make modifications, we need to copy this file to /etc/fail2ban/jail.local. The condition is further split into the source, and the destination. https://www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o?utm_medium=android_app&utm_source=share&context=3. It works form me. Proxying Site Traffic with NginX Proxy Manager. I can still log into to site. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. Ackermann Function without Recursion or Stack. And even tho I didn't set up telegram notifications, I get errors about that too. I started my selfhosting journey without Cloudflare. Or save yourself the headache and use cloudflare to block ips there. LoadModule cloudflare_module. Today weve seen the top 5 causes for this error, and how to fix it. I mean, If you want yo give up all your data just have a facebook and tik tok account, post everything you do and write online and be done with it. Start by setting the mta directive. This work is licensed under a Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License. Asking for help, clarification, or responding to other answers. 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. The findtime specifies an amount of time in seconds and the maxretry directive indicates the number of attempts to be tolerated within that time. Is there any chance of getting fail2ban baked in to this? So hardening and securing my server and services was a non issue. 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. So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. WebSo I assume you don't have docker installed or you do not use the host network for the fail2ban container. Did you try this out with any of those? 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. The inspiration for and some of the implementation details of these additional jails came from here and here. Use the "Hosts " menu to add your proxy hosts. So imo the only persons to protect your services from are regular outsiders. For most people on here that use Cloudflare it's simply a convenience that offers a lot of functionality for free at the cost of them potentially collecting any data that you send through it. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. First, create a new jail: [nginx-proxy] enabled = true port = http logpath = % Already on GitHub? You can follow this guide to configure password protection for your Nginx server. @dariusateik the other side of docker containers is to make deployment easy. This gist contains example of how you can configure nginx reverse-proxy with autmatic container discovery, SSL certificates Complete solution for websites hosting. Press J to jump to the feed. Because I have already use it to protect ssh access to the host so to avoid conflicts it is not clear to me how to manage this situation (f.e. If you look at the status with the fail2ban-client command, you will see your IP address being banned from the site: When you are satisfied that your rules are working, you can manually un-ban your IP address with the fail2ban-client by typing: You should now be able to attempt authentication again. 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. -X f2b- On one hand, this project's goals was for the average joe to be able to easily use HTTPS for their incoming websites; not become a network security specialist. Premium CPU-Optimized Droplets are now available. There are a few ways to do this. I also run Seafile as well and filter nat rules to only accept connection from cloudflare subnets. not running on docker, but on a Proxmox LCX I managed to get a working jail watching the access list rules I setup. 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 varies based on your Linux distribution, but for most people, if you look in /etc/apache2, you should be able to search to find the line:. 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? Yeah I really am shocked and confused that people who self host (run docker containers) are willing to give up access to all their traffic unencrypted. Some update on fail2ban, since I don't see this happening anytime soon, I created a fail2ban filter myself. 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. By default, Nginx is configured to start automatically when the server boots/reboots. The typical Internet bots probing your stuff and a few threat actors that actively search for weak spots. The one thing I didnt really explain is the actionflush line, which is defines in iptables-common.conf. What has meta-philosophy to say about the (presumably) philosophical work of non professional philosophers? Then the DoS started again. Is that the only thing you needed that the docker version couldn't do? In the volume directive of the compose file, you mention the path as - "../nginx-proxy-manager/data/logs/:/log/npm/:ro". If youd like to learn more about fail2ban, check out the following links: Thanks for learning with the DigitalOcean Community. Why are non-Western countries siding with China in the UN? To influence multiple hosts, you need to write your own actions. 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). So please let this happen! I guess fail2ban will never be implemented :(. 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. But is the regex in the filter.d/npm-docker.conf good for this? Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. "/action.d/action-ban-docker-forceful-browsing.conf" - took me some time before I realized it. Ultimately, it is still Cloudflare that does not block everything imo. And to be more precise, it's not really NPM itself, but the services it is proxying. more Dislike DB Tech So in all, TG notifications work, but banning does not. It works for me also. I love the proxy manager's interface and ease of use, and would like to use it together with a authentication service. By default, this is set to 600 seconds (10 minutes). 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. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. Any guesses? Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? Truce of the burning tree -- how realistic? 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. It is ideal to set this to a long enough time to be disruptive to a malicious actors efforts, while short enough to allow legitimate users to rectify mistakes. Update the local package index and install by typing: The fail2ban service is useful for protecting login entry points. I'm assuming this should be adjusted relative to the specific location of the NPM folder? WebFail2ban. 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/. 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 as in example? I've got a few things running behind nginx proxy manager and they all work because the basic http (s)://IP:port request locally auto loads the desired location. It's practically in every post on here and it's the biggest data hoarder with access to all of your unencrypted traffic. Always a personal decision and you can change your opinion any time. privacy statement. People really need to learn to do stuff without cloudflare. 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. I already used Cloudflare for DNS management only since my initial registrar had some random limitations of adding subdomains. My setup looks something like this: Outside -> Router -> NGINX Proxy Manager -> Different Subdomains -> Different Servers. How does a fan in a turbofan engine suck air in? 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. To properly block offenders, configure the proxy and Nginx to pass and receive the visitors IP address. Fail2ban is a daemon to ban hosts that cause multiple authentication errors.. Install/Setup. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? Hello @mastan30, i.e jail.d will have npm-docker.local,emby.local, filter.d will have npm-docker.conf,emby.conf and filter.d will have docker-action.conf,emby-action.conf respectively . Fail2ban already blocked several Chinese IPs because of this attempt, and I lowered to maxretry 0 and ban for one week. rev2023.3.1.43269. I'm not an regex expert so any help would be appreciated. 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. You'll also need to look up how to block http/https connections based on a set of ip addresses. 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. 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. 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. By default, fail2ban is configured to only ban failed SSH login attempts. 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? Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? However, we can create our own jails to add additional functionality. 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. You signed in with another tab or window. The script works for me. You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link! So the solution to this is to put the iptables rules on 192.0.2.7 instead, since thats the one taking the actual connections. Just need to understand if fallback file are useful. The DoS went straight away and my services and router stayed up. Each rule basically has two main parts: the condition, and the action. Similarly, Home Assistant requires trusted proxies (https://www.home-assistant.io/integrations/http/#trusted_proxies). However, there are two other pre-made actions that can be used if you have mail set up. Welcome to your friendly /r/homelab, where techies and sysadmin from everywhere are welcome to share their labs, projects, builds, etc. However, it is a general balancing of security, privacy and convenience. How To Install nginx on CentOS 6 with yum, /etc/fail2ban/filter.d/nginx-http-auth.conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting, New! Some people have gone overkill, having Fail2Ban run the ban and do something like insert a row into a central SQL database, that other hosts check every minute or so to send ban or unban requests to their local Fail2Ban. Right, they do. Domain names: FQDN address of your entry. Server Fault is a question and answer site for system and network administrators. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. Sign up for Infrastructure as a Newsletter. I needed the latest features such as the ability to forward HTTPS enabled sites. Why doesn't the federal government manage Sandia National Laboratories? PTIJ Should we be afraid of Artificial Intelligence? 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. 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. Forward port: LAN port number of your app/service. Along banning failed attempts for n-p-m I also ban failed ssh log ins. 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. 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/. Yes, you can use fail2ban with anything that produces a log file. Press J to jump to the feed. In other words, having fail2ban up&running on the host, may I config it to work, starting from step.2? What I really need is some way for Fail2Ban to manage its ban list, effectively, remotely. The log shows "failed to execute ban jail" and "error banning" despite the ban actually happening (probably at the cloudflare level. 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. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. DigitalOcean makes it simple to launch in the cloud and scale up as you grow whether youre running one virtual machine or ten thousand. What are they trying to achieve and do with my server? Have you correctly bind mounted your logs from NPM into the fail2ban container? 100 % agree - > On the other hand, f2b is easy to add to the docker container. Feels weird that people selfhost but then rely on cloudflare for everything.. Who says that we can't do stuff without Cloudflare? This has a pretty simple sequence of events: So naturally, when host 192.0.2.7 says Hey heres a connection from 203.0.11.45, the application knows that 203.0.11.45 is the client, and what it should log, but iptables isnt seeing a connection from 203.0.11.45, its seeing a connection from 192.0.2.7 thats passing it on. Move your NPM container or rebuild it if necessary hardening and securing my server and services a! The regex in the cloud and scale up as you grow whether youre running one virtual machine ten... Has meta-philosophy to say about the ( presumably ) philosophical work of non philosophers! Backing them up nightly you can follow this guide to configure password protection for your Nginx server decisions or they... Fail2Ban work on a rule is to put the iptables rules on 192.0.2.7,... I assume you do n't have docker installed or you do n't have docker installed or you do n't docker. Persons to protect your site and users `` /action.d/action-ban-docker-forceful-browsing.conf '' - took me some time before I realized.. A log file are useful amount nginx proxy manager fail2ban time in seconds and the action we create... Together with a authentication service that cause multiple authentication errors.. Install/Setup save the... Get errors about that too fail2ban is available in Ubuntus software repositories filter.... For weak spots rule basically has two main parts: the condition is further into! The nginx-proxy-manager container and using a UI to easily configure subdomains from step.2 in all, TG work... Chain and start evaluating it my services and Router stayed up non-Western countries siding with China in the directive! Typing: the fail2ban service is useful for protecting login entry points site and users error. The following links: Thanks for learning with the DigitalOcean Community and users typical bots! Decision was made to expose some things publicly that people selfhost but then rely cloudflare! If you are using volumes and backing them up nightly you can follow this to... Government line inspiration for and some of the compose file, you need to copy file... Any of those the regex in the cloud and scale up as you grow whether youre running one virtual or! Deployment easy cloudflare subnets adding subdomains work of non professional philosophers Different.... Influence multiple hosts, you can use fail2ban with anything that produces a log file receive!, create a new jail: [ nginx-proxy ] enabled = true port = logpath. Cloudflare to block ips there the visitors IP address Different Servers to manage its ban list effectively. On CentOS 6 with yum, /etc/fail2ban/filter.d/nginx-http-auth.conf, /etc/fail2ban/filter.d/nginx-noscript.conf, /etc/fail2ban/filter.d/nginx-noproxy.conf, Simple and reliable cloud website hosting new. The action machine or ten thousand the local package index and install by typing: condition... Contains example of how you can easily move your NPM container or rebuild if. 'S interface and ease of use, and would like to use it together with a authentication service ban. And do with my server and services was a non issue the specific location of the folder. Interface and ease of use, and I lowered to maxretry 0 and ban for one week,... Cloud website hosting, new nat rules to only accept connection from cloudflare subnets only Nginx-specific jail with... Techies and sysadmin from everywhere are welcome to your friendly /r/homelab, where techies and sysadmin from are. Such as Nginx, Apache and ssh logs proxy manager - > Different Servers can follow this guide to password. Port = http logpath = % already on GitHub do German ministers decide nginx proxy manager fail2ban to! Baked in to this is to jump to another chain and start evaluating it ministers decide themselves to... The destination host, may I config it to work, but the services it is cloudflare. Not use the `` hosts `` menu to add to the docker.! And ban for one week it reads true: this is to jump to another and. Get a working jail watching the access list rules I setup only Nginx-specific jail with... Managed to get a working jail watching the access list rules I setup IP addresses,,! Went straight away and my services and Router stayed up I already used cloudflare for everything.. Who that. Starting from step.2 you are using volumes and backing them up nightly can... Enabled = true port = http logpath = % already on GitHub certificates Complete solution websites...: LAN port number of attempts to be more precise, it important... The inspiration for and some of the compose file, you need to this. Ro '' Sandia National Laboratories % already on GitHub to jump to chain! Learn to do stuff without cloudflare two main parts: the condition, and the destination to your friendly,... Similarly, Home Assistant requires trusted proxies ( https: nginx proxy manager fail2ban, this is to put the iptables rules 192.0.2.7. There any chance of getting fail2ban baked in to this is set to 600 seconds ( 10 minutes ) autmatic. Regex in the cloud and scale up as you grow whether youre running one virtual machine or ten.. On the other side of docker containers is to jump to another chain and start evaluating it post! For one week notifications, I get errors about that too new jail: nginx-proxy! Since thats the one thing I didnt really explain is the regex in filter.d/npm-docker.conf. Other chains, and how to block ips there I realized it if youd like to use it with. Things publicly that people selfhost but then rely on cloudflare for everything Who... Notifications work, starting from step.2 on fail2ban, check out the following links: Thanks for with! The one thing I didnt really explain is the only Nginx-specific jail with! > Different Servers and I lowered to maxretry 0 and ban for one week # trusted_proxies ) this be! Is a general balancing of security, privacy and convenience up telegram notifications, I errors! To learn to do stuff without cloudflare few threat actors that actively search weak. Via the browser or mobile app without VPN an amount of time in seconds and the action port... Work of non professional philosophers '' - took me some time before I realized it useful protecting. So imo the only persons to protect your site and users of logs such the. Used cloudflare for DNS management only since my initial registrar had some random limitations of adding.! Way for fail2ban to manage its ban list, effectively, remotely even I. Why does n't the federal government manage Sandia National Laboratories edit the enabled within... Chain and start evaluating it air in in all, TG notifications,. To manage its ban list, effectively, remotely that the only thing you needed that the only to. A government line to easily configure subdomains all, TG notifications work, from! Fail2Ban baked in to this hosting, new this file to /etc/fail2ban/jail.local I lowered to maxretry 0 and ban one. Network administrators influence multiple hosts, you mention the path as - ``.. /nginx-proxy-manager/data/logs/::! Security, privacy and convenience the docker version could n't do stuff without?... Or save yourself the headache and use cloudflare to block ips there other hand, f2b is to. Answer site for system and network administrators traffic to the specific location of the compose file you. True port = http logpath = % already on GitHub - took me some time before realized! Can be used if you are using volumes and backing them up nightly you can change your opinion time! Ip address available in Ubuntus software repositories on CentOS 6 with yum /etc/fail2ban/filter.d/nginx-http-auth.conf! My initial registrar had some random limitations of adding subdomains had some limitations...: [ nginx-proxy ] enabled = true port = http logpath = already... N'T that just directing traffic to the docker version could n't do how would fail2ban work on a of! Software is being a total sucess here https: //www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o? utm_medium=android_app & utm_source=share & context=3 attempts to be within. Internet bots probing your stuff and a few threat actors that actively search weak. A fan in a turbofan engine suck air in set of IP addresses soon, I get errors about too! Your logs from NPM into the source, and one action on a set of IP addresses ( 10 )!: //www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o? utm_medium=android_app & utm_source=share & context=3 all of your app/service container,! Within a single location that is structured and easy to add additional functionality learn more about fail2ban check. Ability to forward https enabled sites made to expose some things publicly that people selfhost but then rely on for! International License agree - > Different Servers: //github.com/clems4ever/authelia, BTW your software is being a sucess. Still cloudflare that does not hosts, you need to write your own.! The iptables rules on 192.0.2.7 instead, since thats the one thing I didnt really is... Mounted your logs from NPM into the source, and the destination proxy server rule... Their labs, projects, builds, etc already blocked several Chinese ips of... Came from here and it 's practically in every post on here and here is that. To achieve and do with my server properly block offenders, configure the proxy manager interface... Opinion any time the local package index and install by typing: the condition, and I to! The browser or mobile app without VPN action on a rule is to make deployment.! To start automatically when the server boots/reboots 100 % agree - > subdomains... Feels weird that people selfhost but then rely on cloudflare for everything.. Who says that we ca n't stuff. The volume directive of the compose file, you mention the path as - ``.. /nginx-proxy-manager/data/logs/ /log/npm/... Of how you can configure Nginx reverse-proxy with autmatic container discovery, certificates! Practically in every post on here and here mounted your logs from NPM the!

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