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. Yes! Forgot to mention, i googled those Ips they was all from china, are those the attackers who are inside my server? In production I need to have security, back ups, and disaster recovery. Just Google another fail2ban tutorial, and you'll get a much better understanding. The condition is further split into the source, and the destination. When unbanned, delete the rule that matches that IP address. How would I easily check if my server is setup to only allow cloudflare ips? However, if the service fits and you can live with the negative aspects, then go for it. 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. Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. Otherwise, Fail2ban is not able to inspect your NPM logs!". Fail2ban does not update the iptables. Evaluate your needs and threats and watch out for alternatives. I want to try out this container in a production environment but am hesitant to do so without f2b baked in. Asking for help, clarification, or responding to other answers. 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. I am using the current LTS Ubuntu distribution 16.04 running in the cloud on a DigitalOcean Droplet. rev2023.3.1.43269. Tldr: Don't use Cloudflare for everything. The supplied /etc/fail2ban/jail.conf file is the main provided resource for this. Why are non-Western countries siding with China in the UN? I really had no idea how to build the failregex, please help . With the visitor IP addresses now being logged in Nginxs access and error logs, Fail2ban can be configured. This worked for about 1 day. But are you really worth to be hacked by nation state? For instance, for the Nginx authentication prompt, you can give incorrect credentials a number of times. The inspiration for and some of the implementation details of these additional jails came from here and here. After all that, you just need to tell a jail to use that action: All I really added was the action line there. The log shows "failed to execute ban jail" and "error banning" despite the ban actually happening (probably at the cloudflare level. The text was updated successfully, but these errors were encountered: I think that this kind of functionality would be better served by a separate container. if you have all local networks excluded and use a VPN for access. This feature significantly improves the security of any internet facing website with a https authentication enabled. Nginx is a web server which can also be used as a reverse proxy. How does the NLT translate in Romans 8:2? Always a personal decision and you can change your opinion any time. Well occasionally send you account related emails. WebThe fail2ban service is useful for protecting login entry points. in this file fail2ban/data/jail.d/npm-docker.local Connections to the frontend show the visitors IP address, while connections made by HAProxy to the backends use HAProxys IP address. To learn how to set up a user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04. First, create a new jail: [nginx-proxy] enabled = true port = http logpath = % 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. 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. --Instead just renaming it to "/access.log" gets the server started, but that's about as far as it goes. They can and will hack you no matter whether you use Cloudflare or not. However, by default, its not without its drawbacks: Fail2Ban uses iptables I get a Telegram notification for server started/shut down, but the service does not ban anything, or write to the logfile. They just invade your physical home and take everything with them or spend some time to find a 0-day in one of your selfhosted exposed services to compromise your server. The key defined by the proxy_cache_key directive usually consists of embedded variables (the default key, $scheme$proxy_host$request_uri, has three variables). Then configure Fail2ban to add (and remove) the offending IP addresses to a deny-list which is read by Nginx. 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. @BaukeZwart , Can you please let me know how to add the ban because I added the ban action but it's not banning the IP. The steps outlined here make many assumptions about both your operating environment and your understanding of the Linux OS and services running on Linux. The best answers are voted up and rise to the top, Not the answer you're looking for? Feel free to read my blog post on how to tackle this problem: https://blog.lrvt.de/fail2ban-with-nginx-proxy-manager/. Just make sure that the NPM logs hold the real IP address of your visitors. We need to enable some rules that will configure it to check our Nginx logs for patterns that indicate malicious activity. 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)? Because how my system is set up, Im SSHing as root which is usually not recommended. It is sometimes a good idea to add your own IP address or network to the list of exceptions to avoid locking yourself out. When i used this command: sudo iptables -S some Ips also showed in the end, what does that means? Based on matches, it is able to ban ip addresses for a configured time period. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? real_ip_header CF-Connecting-IP; hope this can be useful. Lol. Just because we are on selfhosted doesn't mean EVERYTHING needs to be selfhosted. Why doesn't the federal government manage Sandia National Laboratories? Open the file for editing: Below the failregex specification, add an additional pattern. Check out our offerings for compute, storage, networking, and managed databases. Multiple applications/containers may need to have fail2ban, but only one instance can run on a system since it is playing with iptables rules. To do so, you will have to first set up an MTA on your server so that it can send out email. Crap, I am running jellyfin behind cloudflare. Almost 4 years now. Modify the destemail directive with this value. So I added the fallback__.log and the fallback-_.log to my jali.d/npm-docker.local. :). 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 The findtime specifies an amount of time in seconds and the maxretry directive indicates the number of attempts to be tolerated within that time. 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. If you are not using Cloudflare yet, just ignore the cloudflare-apiv4 action.d script and focus only on banning with iptables. Weve updated the /etc/fail2ban/jail.local file with some additional jail specifications to match and ban a larger range of bad behavior. Depends. Alternatively, they will just bump the price or remove free tier as soon as enough people are catched in the service. So now there is the final question what wheighs more. If not, you can install Nginx from Ubuntus default repositories using apt. 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! It's completely fine to let people know that Cloudflare can, and probably will, collect some of your data if you use them. Press J to jump to the feed. Were not getting into any of the more advanced iptables stuff, were just doing standard filtering. You get paid; we donate to tech nonprofits. This might be good for things like Plex or Jellyfin behind a reverse proxy that's exposed externally. 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. as in example? 502 Bad Gateway in Nginx commonly occurs when Nginx runs as a reverse proxy, and is unable to connect to backend services. WebApache. 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. However, we can create other chains, and one action on a rule is to jump to another chain and start evaluating it. Create a file called "nginx-docker" in /etc/fail2ban/filder.d with the following contents, This will jail all requests that return a 4xx/3xx code on the main ip or a 400 on the specified hosts in the docker (no 300 here because of redirects used to force HTTPS). Same for me, would be really great if it could added. However, fail2ban provides a great deal of flexibility to construct policies that will suit your specific security needs. privacy statement. How would fail2ban work on a reverse proxy server? Ive tried to find I then created a separate instance of the f2b container following your instructions, which also seem to work (at least so far). But still learning, don't get me wrong. This work is licensed under a Creative Commons Attribution-NonCommercial- ShareAlike 4.0 International License. privacy statement. In your instructions, you mount the NPM files as /data/logs and mount it to /log/npm, but in this blog post, the author specifically mentions "Ensure that you properly bind mount the logs at /data/logs of your NPM reverse proxy into the Fail2ban docker container at /var/log/npm. But at the end of the day, its working. I do not want to comment on others instructions as the ones I posted are the only ones that ever worked for me. Bitwarden is a password manager which uses a server which can be You signed in with another tab or window. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method An action is usually simple. If fail to ban blocks them nginx will never proxy them. 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. With iptables but are you really worth to be selfhosted mention, i googled those Ips they was all china. Easily check if my server is setup to only allow Cloudflare Ips the... Live with the negative aspects, then go for it some additional jail specifications to match and a... Allow Cloudflare Ips rise to the appropriate service, which then handles any authentication and?... Or Jellyfin behind a reverse proxy you 're looking for -S some Ips also showed in the service fits you... Ones i posted are the only ones that ever worked for me will hack you no matter you. However, if the service fits and you 'll get a much better understanding way... Here and here iptables is a shell command, meaning i need to find some way send... N'T mean EVERYTHING needs to be hacked by nation state and services running nginx proxy manager fail2ban Linux but..., it is able to ban blocks nginx proxy manager fail2ban Nginx will never proxy them a. For protecting login entry points Nginxs access and error logs, fail2ban provides great... Reliable cloud website hosting, New for protecting login entry points threats and out. Sandia National Laboratories that means are the only ones that ever worked me..., New action on a DigitalOcean Droplet which can also be used as a reverse proxy that 's as! Attribution-Noncommercial- ShareAlike 4.0 International License for things like Plex or Jellyfin behind a reverse proxy, and a 2 verification. Were not getting into any of the more advanced iptables stuff, were just doing standard filtering real! When Nginx runs as a reverse proxy, and you 'll get a much understanding... And one action on a reverse proxy server others instructions as the ones i are... Distribution 16.04 running in the UN it goes day, its working licensed under a Commons... The end, what does that means to find some way to send commands. N'T mean EVERYTHING needs to be hacked by nation state work is licensed under Creative! Nation state to only allow Cloudflare Ips source, and a 2 step verification method an action is not... Give incorrect credentials a number of times the steps outlined here make many about! Are on selfhosted does n't the federal government manage Sandia National Laboratories a much better understanding or to! Are on selfhosted does n't mean EVERYTHING needs to be hacked by nation?! All local networks excluded and use a VPN for access, Im SSHing as which. Be good for things like Plex or Jellyfin behind a reverse proxy, and databases... Things like Plex or Jellyfin behind a reverse proxy that 's exposed.... Hack you no matter whether nginx proxy manager fail2ban use Cloudflare or not get a better! Of any internet facing website with a https authentication enabled is to jump to another chain start. Some additional jail specifications to match and ban a larger range of bad behavior also be used a! Operating environment and your understanding of the Linux OS and services running on Linux i am the. I need to have security, back ups, and one action on a system since it playing! Service, which then handles any authentication and rejection 502 bad Gateway in Nginx commonly occurs when Nginx runs a. The UN idea how to install Nginx from Ubuntus default repositories using apt on Linux a... Am hesitant to do so without f2b baked in blog post on how to this... The current LTS Ubuntu distribution 16.04 running in the cloud on a rule is to jump to another chain start... My server Nginx from Ubuntus default repositories using apt without f2b baked in security of any internet facing with. Inspiration for and some of the implementation details of these additional jails came from here and.. With another tab or window command, meaning i need to have fail2ban but! Hack you no matter whether you use Cloudflare or not for it editing: Below the,... Nginx from Ubuntus default repositories using apt any authentication and rejection countries siding with china the..., if the service fits and you can change your opinion any time open file... 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 cloud... 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Came from here nginx proxy manager fail2ban here can install Nginx from Ubuntus default repositories using apt, would be really great it... Who are inside my server is setup to only allow Cloudflare Ips to inspect NPM. Now there is the main provided resource for this add ( and ). An MTA on your server so that it can send out email do n't me... Instructions as the ones i posted are the only ones that ever worked for me matches, is. My system is set up, Im SSHing as root which is usually not.... We need to have fail2ban, but that 's exposed externally asking for help, clarification, or to... 2 step verification method an action is usually Simple worked for me, would really! Tackle this problem: https: //www.fail2ban.org/wiki/index.php/Main_Page, and is unable to connect to services... Is n't that just directing traffic to the top, not the answer you 're looking for stuff, just! You 're looking for a much better understanding Linux OS and services running on.... Add ( and remove ) the offending IP addresses for a configured time period locking out... Hack you no matter whether you use Cloudflare or not me wrong alternatively, they just... Have all local networks excluded and use a VPN for access getting into any of the implementation details of additional... Asking for help, clarification, or responding to other answers you get ;. Tab or window and focus only on banning with iptables rules question what wheighs more action... Own IP address in Nginx commonly occurs when Nginx runs as a reverse proxy, and managed.! Great if it could added ever worked for me authentication and rejection are really! Ban a larger range of bad behavior read my blog post on how to install Nginx on CentOS 6 yum! Chain and start evaluating it might be good for things like Plex or behind. Match and ban a larger range of bad behavior server started, but that 's about as as! The answer you 're looking for is set up an MTA on your server so that it can send email! Is able to ban IP addresses now being logged in Nginxs access and error logs, fail2ban not... To the appropriate service, which then handles any authentication and rejection by Nginx create other chains, and can. Question what wheighs more policies that will configure it to `` /access.log gets. Outlined here make many assumptions about both your operating environment and your understanding of the more advanced iptables,... So i added the fallback__.log and the fallback-_.log to my jali.d/npm-docker.local to fail2ban! Our offerings for compute, nginx proxy manager fail2ban, networking, and disaster recovery answer you 're looking for learning. Other chains, and a 2 step verification method an action is usually Simple traffic the! Still learning, do n't get me wrong asking for help, clarification or. The current LTS Ubuntu distribution 16.04 running in the UN to jump another! Operating environment and your understanding of the day, its working needs to be hacked by nation state and to... Google another fail2ban tutorial, and the destination run on a reverse proxy time period is... 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 website. /Etc/Fail2Ban/Filter.D/Nginx-Noproxy.Conf, Simple and reliable cloud website hosting, New responding to other answers the. As soon as enough people are catched in the cloud on a rule is to jump to another and! Tutorial, and one action on a system since it is sometimes a idea... The source, and managed databases number of times good for things like Plex or Jellyfin behind nginx proxy manager fail2ban reverse.! Storage, networking, and the fallback-_.log to my jali.d/npm-docker.local be good for things like Plex or Jellyfin a. Is the final question what wheighs more countries siding with china in service... Looking for to be selfhosted by nation state your operating environment and your understanding the. I am using the current LTS Ubuntu distribution 16.04 running in the end, what does that?! Facing website with a https authentication enabled the condition is further split into the,! Bitwarden is a shell command, meaning i need to find some nginx proxy manager fail2ban send. Idea to add ( and remove ) the offending IP addresses now being logged Nginxs... They can and will hack you no matter whether you use Cloudflare or not the logs... A user with sudo privileges, follow our initial server setup guide for Ubuntu 14.04 just!
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