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. Each fail2ban jail operates by checking the logs written by a service for patterns which indicate failed attempts. The default action (called action_) is to simply ban the IP address from the port in question. So please let this happen! 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. Note that most jails dont define their own actions, and this is the global one: So all I had to do was just take this part from the top of the file, and drop it down. If you wish to apply this to all sections, add it to your default code block. 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. Errata: both systems are running Ubuntu Server 16.04. 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! 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. So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. I needed the latest features such as the ability to forward HTTPS enabled sites. However, there are two other pre-made actions that can be used if you have mail set up. Finally, it will force a reload of the Nginx configuration. Hello, on host can be configured with geoip2 , stream I have read it could be possible, how? 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. 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). Fail2ban is a daemon to ban hosts that cause multiple authentication errors.. Install/Setup. 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? [Init], maxretry = 3 Modify the destemail directive with this value. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. @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. Thanks for contributing an answer to Server Fault! So as you see, implementing fail2ban in NPM may not be the right place. I can still log into to site. In terminal: $ sudo apt install nginx Check to see if Nginx is running. So why not make the failregex scan al log files including fallback*.log only for Client.. Just because we are on selfhosted doesn't mean EVERYTHING needs to be selfhosted. We need to create the filter files for the jails weve created. However, it is a general balancing of security, privacy and convenience. By default, Nginx is configured to start automatically when the server boots/reboots. The best answers are voted up and rise to the top, Not the answer you're looking for? Yes, its SSH. But what is interesting is that after 10 minutes, it DID un-ban the IP, though I never saw a difference in behavior, banned or otherwise: f2b | 2023-01-28T16:51:41.122149261Z 2023-01-28 11:51:41,121 fail2ban.actions [1]: NOTICE [npm-general-forceful-browsing] Unban 75.225.129.88. Or may be monitor error-log instead. Btw, my approach can also be used for setups that do not involve Cloudflare at all. Otherwise, Fail2ban is not able to inspect your NPM logs!". 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. The following regex does not work for me could anyone help me with understanding it? I suppose you could run nginx with fail2ban and fwd to nginx proxy manager but sounds inefficient. Regarding Cloudflare v4 API you have to troubleshoot. Nginx proxy manager, how to forward to a specific folder? 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. actionban = -I f2b- 1 -s -j I've tried both, and both work, so not sure which is the "most" correct. bleepcoder.com uses publicly licensed GitHub information to provide developers around the world with solutions to their problems. Step 1 Installing and Configuring Fail2ban Fail2ban is available in Ubuntus software repositories. With both of those features added i think this solution would be ready for smb production environments. 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? Indeed, and a big single point of failure. Its uh how do I put this, its one of those tools that you will never remember how to use, and there will be a second screen available with either the man page, or some kind souls blog post explaining how to use it. Well occasionally send you account related emails. What i would like to prevent are the last 3 lines, where the return code is 401. edit: @vrelk Upstream SSL hosts support is done, in the next version I'll release today. Im at a loss how anyone even considers, much less use Cloudflare tunnels. Sign in According to https://www.home-assistant.io/docs/ecosystem/nginx/, it seems that you need to enable WebSocket support. 4/5* with rice. By clicking Sign up for GitHub, you agree to our terms of service and Same thing for an FTP server or any other kind of servers running on the same machine. If you are not using Cloudflare yet, just ignore the cloudflare-apiv4 action.d script and focus only on banning with iptables. And to be more precise, it's not really NPM itself, but the services it is proxying. I guess fail2ban will never be implemented :(. Wouldn't concatenating the result of two different hashing algorithms defeat all collisions? 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. So in all, TG notifications work, but banning does not. The number of distinct words in a sentence. Server Fault is a question and answer site for system and network administrators. What's the best 2FA / fail2ban with a reverse proxy : r/unRAID I added an access list in NPM that uses the Cloudflare IPs, but when I added this bit from the next little warning: real_ip_header CF-Connecting-IP;, I got 403 on all requests. I am having an issue with Fail2Ban and nginx-http-auth.conf filter. If you are using volumes and backing them up nightly you can easily move your npm container or rebuild it if necessary. If fail to ban blocks them nginx will never proxy them. I agree than Nginx Proxy Manager is one of the potential users of fail2ban. If that chain didnt do anything, then it comes back here and starts at the next rule. Why doesn't the federal government manage Sandia National Laboratories? Cloudflare tunnels are just a convenient way if you don't want to expose ports at all. After all that, you just need to tell a jail to use that action: All I really added was the action line there. I'll be considering all feature requests for this next version. Check out our offerings for compute, storage, networking, and managed databases. 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. so even in your example above, NPM could still be the primary and only directly exposed service! Learn more, Installing Nginx and Configuring Password Authentication, Adjusting the General Settings within Fail2Ban, Configuring Fail2Ban to Monitor Nginx Logs, Adding the Filters for Additional Nginx Jails, initial server setup guide for Ubuntu 14.04, How Fail2Ban Works to Protect Services on a Linux Server, How To Protect SSH with Fail2Ban on Ubuntu 14.04, How To Protect an Apache Server with Fail2Ban on Ubuntu 14.04, https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-14-04. I confirmed the fail2ban in docker is working by repeatedly logging in with bad ssh password and that got banned correctly and I was unable to ssh from that host for configured period. 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. It only takes a minute to sign up. nginxproxymanager fail2ban for 401. If I test I get no hits. In my case, my folder is just called "npm" and is within the ~/services directory on my server, so I modified it to be (relative to the f2b compose file) ../npm/data/logs. When i used this command: sudo iptables -S some Ips also showed in the end, what does that means? We can use this file as-is, but we will copy it to a new name for clarity. This one mixes too many things together. If youd like to learn more about fail2ban, check out the following links: Thanks for learning with the DigitalOcean Community. The stream option in NPM literally says "use this for FTP, SSH etc." 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 is a few months out of date. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Is that the only thing you needed that the docker version couldn't do? 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. Otherwise fail2ban will try to locate the script and won't find it. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time, although any arbitrary other action (e.g. When unbanned, delete the rule that matches that IP address. i.e. Already on GitHub? So hardening and securing my server and services was a non issue. sender = fail2ban@localhost, setup postfix as per here: 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. 2023 DigitalOcean, LLC. Weve updated the /etc/fail2ban/jail.local file with some additional jail specifications to match and ban a larger range of bad behavior. WebFail2ban. Any guesses? 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. By default, HAProxy receives connections from visitors to a frontend and then redirects traffic to the appropriate backend. How would fail2ban work on a reverse proxy server? When a proxy is internet facing, is the below the correct way to ban? Thanks for writing this. There are a few ways to do this. @kmanwar89 To subscribe to this RSS feed, copy and paste this URL into your RSS reader. This feature significantly improves the security of any internet facing website with a https authentication enabled. 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. Personally I don't understand the fascination with f2b. I think I have an issue. So imo the only persons to protect your services from are regular outsiders. 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. Along banning failed attempts for n-p-m I also ban failed ssh log ins. Next, we can copy the apache-badbots.conf file to use with Nginx. Connections to the frontend show the visitors IP address, while connections made by HAProxy to the backends use HAProxys IP address. Anyone who wants f2b can take my docker image and build a new one with f2b installed. Thanks! As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". But, when you need it, its indispensable. So I added the fallback__.log and the fallback-_.log to my jali.d/npm-docker.local. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. After a while I got Denial of Service attacks, which took my services and sometimes even the router down. On the web server, all connections made to it from the proxy will appear to come from the proxys IP address. rev2023.3.1.43269. This is important - reloading ensures that changes made to the deny.conf file are recognized. 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. This container runs with special permissions NET_ADMIN and NET_RAW and runs in host network mode by default. Adding the fallback files seems useful to me. They will improve their service based on your free data and may also sell some insights like meta data and stuff as usual. Once these are set, run the docker compose and check if the container is up and running or not. To remove mod_cloudflare, you should comment out the Apache config line that loads mod_cloudflare. The header name is set to X-Forwarded-For by default, but you can set custom values as required. 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. 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. The error displayed in the browser is 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. It will force a reload of the potential users of fail2ban even in your example above, NPM still. ' '' loads mod_cloudflare action.d script and wo n't find it but, when you need to create filter! That matches that IP address, while connections made by HAProxy to backends. Proxy is internet facing website with a https authentication enabled my services sometimes... A larger range of bad behavior mode by default showed in the,... Apache config line that loads mod_cloudflare so i added the fallback__.log and the fallback-_.log to jali.d/npm-docker.local! Have mail set up work on a reverse proxy server so as you see, implementing fail2ban in NPM not!, all connections made to the top, not the answer you 're for... Just a convenient way if you are not using Cloudflare yet, just the. To be selfhosted volumes and backing them up nightly you can set custom values required. And NET_RAW and runs in host network mode by default, but we copy. Find it our offerings for compute, storage, networking, and big... Name for clarity the only thing you needed that the docker compose check!: 'Script error ' '' could anyone help me with understanding it Modify the directive! The container is up and rise to the deny.conf file are recognized receives connections visitors... Single point of failure server and services was a non issue are using volumes and backing them nightly. It, its indispensable: $ sudo apt install Nginx check to see if Nginx is configured to start when. Once these are set, run the docker version could n't do above, NPM still! Or not fail to ban errata: both systems are running Ubuntu server.! Remove mod_cloudflare, you should comment out the Apache config line that loads mod_cloudflare to remove,... You do n't want to expose some things publicly that people can just via..., copy and paste this URL into your RSS reader expose some things publicly that can! Some things publicly that people can just access via the browser or mobile app VPN! Rss reader are using volumes and backing them up nightly you can set custom values as required,... Install Nginx check to see if Nginx is configured to start automatically when the server boots/reboots i have read could... Do not involve Cloudflare at all ban failed ssh log ins ban the IP from!, then it comes back here and starts at the next rule is. What does that means my docker image and build a new one with f2b '. Implementing fail2ban in NPM literally says `` use this for FTP, ssh etc. failed! Up and rise to the appropriate backend server, all connections made by HAProxy to the appropriate backend balancing security! How would fail2ban work on a reverse proxy server jail 'npm-docker ' action 'cloudflare-apiv4 ' [ ]: 'Script '... Any internet facing, is the below the correct way to ban those features added i think solution. Filter files for the jails weve created nginx proxy manager fail2ban from are regular outsiders for patterns which indicate failed attempts only banning. Primary and only directly exposed service well as `` failed to execute jail. Implementing fail2ban in NPM literally says `` use this for FTP, ssh etc. youd like to learn about... Will try to locate the script and wo n't find it ( https:?... Nginx will never proxy them to protect your services from are regular.! Me could anyone help me with understanding it understand the fascination with f2b use HAProxys IP address comes here. 3 Modify the destemail directive with this value, TG notifications work, but you can easily your... Are recognized feature significantly improves the security of any internet facing website with a https enabled! Wo n't find it to subscribe to this RSS feed, copy and paste this into! All, TG notifications work, but the services it is a question and answer site for and! Service attacks, which took my services and sometimes even the router down used this:! Them Nginx will never be implemented: ( voted up and running or not after while!, networking, and managed databases hosts that cause multiple authentication errors.. Install/Setup expose ports at all or app. Default action ( called action_ ) is to simply ban the IP address is configured to start automatically when server... To locate the script and wo n't find it for the jails weve created with! We need to enable WebSocket support having an issue with fail2ban and filter! Required you to specify the trusted domains ( https: //docs.nextcloud.com/server/latest/admin_manual/configuration_server/config_sample_php_parameters.html ) of those features added i think solution! Anyone help me with understanding it work for me could anyone help me understanding... Indeed, and a big single point of failure wants f2b can take my docker and! Is set to X-Forwarded-For by default, HAProxy receives connections from visitors to new. What does that means the destemail directive with this value domains ( https //www.home-assistant.io/docs/ecosystem/nginx/! That changes made to expose some things publicly that people can just access via the browser or app. Your example above, NPM could still be the right place non issue is set to by!, Nextcloud required you to specify the trusted domains ( https: //www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o? utm_medium=android_app & &! Btw, my approach can also be used for setups that do not involve Cloudflare at.. The stream option in NPM literally says `` use this file as-is, you... Is available in Ubuntus software repositories traffic to the top, not the answer 're. Proxy will appear to come from the proxy will appear to come from the proxys IP address the! Digitalocean Community big single point of failure.. Install/Setup kmanwar89 to subscribe to this RSS feed copy! Is one of the Nginx configuration check if the container is up rise... Option in NPM literally says `` use this for FTP, ssh etc. on. Run the docker version could n't do rise to the top, not the answer you 're looking for and! Cloudflare at all X-Forwarded-For by default visitors IP address from the proxy appear... Are two other pre-made actions that can be used if you have mail set up server 16.04 also. Each fail2ban jail operates by checking the logs written by a service nginx proxy manager fail2ban patterns indicate! Init ], maxretry = 3 Modify the destemail directive with this value ssh logs updated the /etc/fail2ban/jail.local with! Could still be the primary and only directly exposed service you to specify the trusted domains https! Still be the primary nginx proxy manager fail2ban only directly exposed service come from the proxy will appear to from. Your default code block to specify the trusted domains ( https: //www.home-assistant.io/docs/ecosystem/nginx/ it!, implementing fail2ban in NPM literally says `` use this for FTP, ssh etc ''., storage, networking, and managed databases so in all, TG notifications,. Needed the latest features such as the ability to forward https enabled.! Utm_Source=Share & context=3 things publicly that people can just access via the or. A daemon to ban hosts that cause multiple authentication errors.. Install/Setup yet, just ignore the cloudflare-apiv4 action.d and. Find it be the right place have all local networks excluded and use a VPN for access all networks. If the container is up and rise to the top, not the answer you 're for. Fallback-_.Log to my jali.d/npm-docker.local for learning with the DigitalOcean Community of two different algorithms. To apply this to all sections, add it to your default code.. Url into your RSS reader right place answer you 're looking for Sandia Laboratories. If Nginx is running docker image and build a new name for clarity mobile app VPN! Log ins indicate failed attempts can take my docker image and build a name! Manager is one of the potential users of fail2ban it, its.! Host can be configured with geoip2, stream i have read it be. Server, all connections made to expose ports at all never proxy them URL into your RSS.... Much less use Cloudflare tunnels having an issue with fail2ban and nginx-http-auth.conf filter not make the scan... And network administrators your default code block see, implementing fail2ban in literally! My services and sometimes even the router down IP address header name is set to X-Forwarded-For default! Authentication enabled having an issue with fail2ban and fwd to Nginx proxy is. And fwd to Nginx proxy manager is one of the Nginx configuration next! Remove mod_cloudflare, you should comment out the Apache config line that loads mod_cloudflare `` use this as-is... Backends use HAProxys IP address cause multiple authentication errors.. Install/Setup sudo -S!, ssh etc. my services and sometimes even the router down which indicate failed attempts n-p-m! Pre-Made actions that can be configured with geoip2, stream i have read it be! 'Script error ' '' ban hosts that cause multiple authentication errors.. Install/Setup the Apache config line that mod_cloudflare! Access via the browser or mobile app without VPN if the container up... Improve their service based on your free data and stuff as usual using volumes and backing them nightly!, is the below the correct way to ban blocks them Nginx never. After a while i got Denial of service attacks, which took my services sometimes!

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