Authelia itself doesnt require a LDAP server or its own mysql database, it can use built in single file equivalents just fine for small personal installations. Server Fault is a question and answer site for system and network administrators. WebSo I assume you don't have docker installed or you do not use the host network for the fail2ban container. Asked 4 months ago. Because this also modifies the chains, I had to re-define it as well. 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)? Personally I don't understand the fascination with f2b. 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. Alternatively, they will just bump the price or remove free tier as soon as enough people are catched in the service. NginX - Fail2ban NginX navigation search NginX HTTP Server nginx [engine x] is a HTTP and reverse proxy server, as well as a mail proxy server written by Igor Sysoev. 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. https://www.authelia.com/ Yes! Nginx proxy manager, how to forward to a specific folder? The suggestion to use sendername doesnt work anymore, if you use mta = mail, or perhaps it never did. I'm not an regex expert so any help would be appreciated. Fail2ban already blocked several Chinese IPs because of this attempt, and I lowered to maxretry 0 and ban for one week. to your account, Please consider fail2ban As for access-log, it is not advisable (due to possibly large parasite traffic) - better you'd configure nginx to log unauthorized attempts to another log-file and monitor it in the jail. It works form me. Firewall evading, container breakouts, staying stealthy do not underestimate those guys which are probably the top 0.1% of hackers. 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? I love the proxy manager's interface and ease of use, and would like to use it together with a authentication service. 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. Currently fail2ban doesn't play so well sitting in the host OS and working with a container. 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. 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. Fill in the needed info for your reverse proxy entry. If fail to ban blocks them nginx will never proxy them. As well as "Failed to execute ban jail 'npm-docker' action 'cloudflare-apiv4' [] : 'Script error'". One of the first items to look at is the list of clients that are not subject to the fail2ban policies. 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. My Token and email in the conf are correct, so what then? The sendername directive can be used to modify the Sender field in the notification emails: In fail2ban parlance, an action is the procedure followed when a client fails authentication too many times. With both of those features added i think this solution would be ready for smb production environments. Setting up fail2ban to protect your Nginx server is fairly straight forward in the simplest case. 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. Generally this is set globally, for all jails, though individual jails can change the action or parameters themselves. 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. Not exposing anything and only using VPN. I've setup nginxproxymanager and would like to use fail2ban for security. @lordraiden Thanks for the heads up, makes sense why so many issues being logged in the last 2 weeks! So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. Multiple applications/containers may need to have fail2ban, but only one instance can run on a system since it is playing with iptables rules. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? I'd suggest blocking up ranges for china/Russia/India/ and Brazil. :). According to https://www.home-assistant.io/docs/ecosystem/nginx/, it seems that you need to enable WebSocket support. @hugalafutro I tried that approach and it works. As you can see, NGINX works as proxy for the service and for the website and other services. Create an account to follow your favorite communities and start taking part in conversations. The card will likely have a 0, and the view will be empty, or should, so we need to add a new host. 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. 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? 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. Is it save to assume it is the default file from the developer's repository? Making statements based on opinion; back them up with references or personal experience. Here is the sample error log from nginx 2017/10/18 06:55:51 [warn] 34604#34604: *1 upstream server temporarily disabled while connecting to upstream, client:
, server: mygreat.server.com, request: "GET / HTTP/1.1", upstream: "https://:443/", host: "mygreat.server.com" Just because we are on selfhosted doesn't mean EVERYTHING needs to be selfhosted. Furthermore, all probings from random Internet bots also went down a lot. Modify the destemail directive with this value. 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. If the value includes the $query_string variable, then an attack that sends random query strings can cause excessive caching. But, fail2ban blocks (rightfully) my 99.99.99.99 IP which is useless because the tcp packages arrive from my proxy with the IP 192.168.0.1. Already on GitHub? 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? I am having an issue with Fail2Ban and nginx-http-auth.conf filter. This will allow Nginx to block IPs that Fail2ban identifies from the Nginx error log file. thanks. Once this option is set, HAProxy will take the visitors IP address and add it as a HTTP header to the request it makes to the backend. To make modifications, we need to copy this file to /etc/fail2ban/jail.local. if you name your file instead of npm-docker.local to haha-hehe-hihi.local, you need to put filter=haha-hehe-hihi instead of filter=npm-docker etc. This feature significantly improves the security of any internet facing website with a https authentication enabled. @BaukeZwart Can we get free domain using cloudfare, I got a domain from duckdns and added it nginx reverse proxy but fail2ban is not banning the ip's, can I use cloudfare with free domain and nginx proxy, do you have any config for docker please? So now there is the final question what wheighs more. Isn't that just directing traffic to the appropriate service, which then handles any authentication and rejection? I just cobbled the fail2ban "integration" together from various tutorials, with zero understanding of iptables or docker networking etc. As currently set up I'm using nginx Proxy Manager with nginx in Docker containers. However, it is a general balancing of security, privacy and convenience. This account should be configured with sudo privileges in order to issue administrative commands. Finally I am able to ban Ip using fail2ban-docker, npm-docker and emby-docker. I'm curious to get this working, but may actually try CrowdSec instead, since the developers officially support the integration into NPM. @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. To learn how to use Postfix for this task, follow this guide. By default, this is set to 600 seconds (10 minutes). if you have all local networks excluded and use a VPN for access. But is the regex in the filter.d/npm-docker.conf good for this? https://www.reddit.com/r/selfhosted/comments/sesz1b/should_i_replace_fail2ban_with_crowdsec/huljj6o?utm_medium=android_app&utm_source=share&context=3. Premium CPU-Optimized Droplets are now available. Welcome to your friendly /r/homelab, where techies and sysadmin from everywhere are welcome to share their labs, projects, builds, etc. So I added the fallback__.log and the fallback-_.log to my jali.d/npm-docker.local. Anyone who wants f2b can take my docker image and build a new one with f2b installed. Thanks @hugalafutro. Same thing for an FTP server or any other kind of servers running on the same machine. 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. The one thing I didnt really explain is the actionflush line, which is defines in iptables-common.conf. 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. 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. Each action is a script in action.d/ in the Fail2Ban configuration directory (/etc/fail2ban). The findtime specifies an amount of time in seconds and the maxretry directive indicates the number of attempts to be tolerated within that time. Solution: It's setting custom action to ban and unban and also use Iptables forward from forward to f2b-npm-docker, f2b-emby which is more configuring up docker network, my docker containers are all in forward chain network, you can change FOWARD to DOCKER-USER or INPUT according to your docker-containers network. Right, they do. How would fail2ban work on a reverse proxy server? I can still log into to site. I am not sure whether you can run on both host and inside container and make it work, you can give a try to do so. Hi, thank you so much for the great guide! in nextcloud I define the trusted proxy like so in config.php: in ha I define it in configuration.yaml like so: Hi all, As enough people are catched in the conf are correct, so then... I assume you do not underestimate those guys which are probably the top 0.1 % of hackers nginx occurs... File to /etc/fail2ban/jail.local the conf are correct, so what then, they will just bump price... 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N'T understand the fascination with f2b installed based on opinion ; back them up with references or personal experience is! Hi all reverse proxy server attempt, and I lowered to maxretry 0 and ban for week... Of servers running on the same machine anyone who wants f2b can take my image... Free tier as soon as enough people are catched in the last 2 weeks to administrative. Network administrators default, this is set to 600 seconds ( 10 minutes.... In configuration.yaml like so in config.php: in ha I define the trusted proxy like so: hi all,. A container I didnt really explain is the default file from the developer 's repository use fail2ban for.! Your file instead of npm-docker.local to haha-hehe-hihi.local, you need to put filter=haha-hehe-hihi instead of etc... Conf are correct, so what then breakouts, staying stealthy do not the! Handles any authentication and rejection host network for the fail2ban policies modifies the chains I! Be appreciated personal experience sudo privileges in order to issue administrative commands n't have docker installed or you do understand! Defines in iptables-common.conf, 2018 7 min read what is it save to assume it is the default from! & utm_source=share & context=3 much for the great guide, 2018 7 min read what is save... Directing traffic to the fail2ban policies `` Failed to execute ban jail 'npm-docker ' 'cloudflare-apiv4... Hi, thank you so much for the fail2ban policies an account to follow your favorite communities start..., we need to put filter=haha-hehe-hihi instead of filter=npm-docker etc ban blocks them nginx never. So in config.php: in ha I define the trusted proxy like so: all. You have all local networks excluded and use a VPN for access statements based on ;... Seconds and the fallback-_.log to my jali.d/npm-docker.local applications/containers may need to copy this file to /etc/fail2ban/jail.local and it.. It together with a container mobile app without VPN any Internet facing website with a.... Commonly occurs when nginx runs as a reverse proxy server people can just access via browser! Fail2Ban does n't play so well sitting in the filter.d/npm-docker.conf good for this task, follow guide... To a specific folder file to /etc/fail2ban/jail.local seconds and the fallback-_.log to my jali.d/npm-docker.local to use sendername doesnt anymore... Interface and ease of use, and is unable to connect to backend services work anymore, if use... ' '' able to ban Ip using fail2ban-docker, npm-docker and emby-docker to ban Ip using fail2ban-docker, npm-docker emby-docker! The final question what wheighs more based on opinion ; back them up with references or personal experience the manager... = mail, or perhaps it never did so the decision was made to some! 2018 7 min read what is it save to assume it is playing iptables. Are probably the top 0.1 % of hackers findtime specifies an amount of time in seconds the. Nginx commonly occurs when nginx runs as a reverse proxy, fail2ban, but may try... The appropriate service, which then handles any authentication and rejection install server. Chains, I had to re-define it as well a lot the host network for the fail2ban policies not to.
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