Just for a little background if youre not aware, iptables is a utility for running packet filtering and NAT on Linux. Tldr: Don't use Cloudflare for everything. I agree than Nginx Proxy Manager is one of the potential users of fail2ban. If I test I get no hits. Requests from HAProxy to the web server will contain a HTTP header named X-Forwarded-For that contains the visitors IP address. WebInstalling NGINX SSL Reverse Proxy, w/ fail2ban, letsencrypt, and iptables-persistent. 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. 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. 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. 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)? 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. I've got a question about using a bruteforce protection service behind an nginx proxy. I'd suggest blocking up ranges for china/Russia/India/ and Brazil. Fail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. I am having trouble here with the iptables rules i.e. To change this behavior, use the option forwardfor directive. Just neglect the cloudflare-apiv4 action.d and only rely on banning with iptables. Check out our offerings for compute, storage, networking, and managed databases. 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 you do not use telegram notifications, you must remove the action And those of us with that experience can easily tweak f2b to our liking. 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. Maybe something like creating a shared directory on my proxy, let the webserver log onto that shared directory and then configure fail2ban on my proxy server to read those logs and block ips accordingly? Note: theres probably a more elegant way to accomplish this. Should I be worried? The typical Internet bots probing your stuff and a few threat actors that actively search for weak spots. The name is used to name the chain, which is taken from the name of this jail (dovecot), port is taken from the port list, which are symbolic port names from /etc/services, and protocol and chain are taken from the global config, and not overridden for this specific jail. for reference Hi @posta246 , Yes my fail2ban is not installed directly on the container, I used it inside a docker-container and forwarded ip ban rules to docker chains. Proxy: HAProxy 1.6.3 Otherwise fail2ban will try to locate the script and won't find it. 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. WebFail2ban. I guess Ill stick to using swag until maybe one day it does. Any guesses? 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/. I then created a separate instance of the f2b container following your instructions, which also seem to work (at least so far). 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. Really, its simple. Working on improving health and education, reducing inequality, and spurring economic growth? in this file fail2ban/data/jail.d/npm-docker.local in fail2ban's docker-compose.yml mount npm log directory as read only like so: then create data/filter.d/npm-docker.conf with contents: then create data/jail.d/npm-docker.local with contents: What confuses me here is the banned address is the IP of vpn I use to access internet on my workstations. 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. So inside in your nginx.conf and outside the http block you have to declare the stream block like this: stream { # server { listen 80; proxy_pass 192.168.0.100:3389; } } With the above configuration just proxying your backend on tcp layer with a cost of course. 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. Can I implement this without using cloudflare tunneling? Yes, its SSH. I just installed an app ( Azuracast, using docker), but the 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. sendername = Fail2Ban-Alert Please let me know if any way to improve. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? 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. Alternatively, they will just bump the price or remove free tier as soon as enough people are catched in the service. I used to have all these on the same vm and it worked then, later I moved n-p-m to vm where my mail server is, and the vm with nextcloud and ha and other stuff is being tunelled via mullvad and everything still seems to work. The condition is further split into the source, and the destination. EDIT: The issue was I incorrectly mapped my persisted NPM logs. thanks. In NPM Edit Proxy Host added the following for real IP behind Cloudflare in Custom Nginx Configuration: 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. I'm assuming this should be adjusted relative to the specific location of the NPM folder? 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. Thanks! To do so, you will have to first set up an MTA on your server so that it can send out email. And even tho I didn't set up telegram notifications, I get errors about that too. Domain names: FQDN address of your entry. 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. Sign up for Infrastructure as a Newsletter. https://www.authelia.com/ Hello, on host can be configured with geoip2 , stream I have read it could be possible, how? Each chain also has a name. Any advice? However, by default, its not without its drawbacks: Fail2Ban uses iptables to manage its bans, inserting a --reject-with icmp-port-unreachable rule for each banned host. In the end, you are right. How would I easily check if my server is setup to only allow cloudflare ips? Wed like to help. Scheme: http or https protocol that you want your app to respond. For example, my nextcloud instance loads /index.php/login. Indeed, and a big single point of failure. This tells Nginx to grab the IP address from the X-Forwarded-For header when it comes from the IP address specified in the set_real_ip_from value. We can use this file as-is, but we will copy it to a new name for clarity. PTIJ Should we be afraid of Artificial Intelligence? Additionally, how did you view the status of the fail2ban jails? It seems to me that goes against what , at least I, self host for. Make sure the forward host is properly set with the correct http scheme and port. Edit the enabled directive within this section so that it reads true: This is the only Nginx-specific jail included with Ubuntus fail2ban package. You can do that by typing: The service should restart, implementing the different banning policies youve configured. Forgot to mention, i googled those Ips they was all from china, are those the attackers who are inside my server? Sign in Forward hostname/IP: loca IP address of your app/service. We now have to add the filters for the jails that we have created. 4/5* with rice. 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. The steps outlined here make many assumptions about both your operating environment and But at the end of the day, its working. Errata: both systems are running Ubuntu Server 16.04. What are they trying to achieve and do with my server? The error displayed in the browser is privacy statement. This was something I neglected when quickly activating Cloudflare. By default, fail2ban is configured to only ban failed SSH login attempts. fail2ban :: wiki :: Best practice # Reduce parasitic log-traffic, The open-source game engine youve been waiting for: Godot (Ep. The findtime specifies an amount of time in seconds and the maxretry directive indicates the number of attempts to be tolerated within that time. https://www.fail2ban.org/wiki/index.php/Main_Page, and a 2 step verification method With both of those features added i think this solution would be ready for smb production environments. --The same result happens if I comment out the line "logpath - /var/log/npm/*.log". Currently fail2ban doesn't play so well sitting in the host OS and working with a container. Well, iptables is a shell command, meaning I need to find some way to send shell commands to a remote system. Before you begin, you should have an Ubuntu 14.04 server set up with a non-root account. https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-14-04. There are a few ways to do this. Hope I have time to do some testing on this subject, soon. This results in Fail2ban blocking traffic from the proxy IP address, preventing visitors from accessing the site. When operating a web server, it is important to implement security measures to protect your site and users. Maybe drop into the Fail2ban container and validate that the logs are present at /var/log/npm. -As is, upon starting the service I get error 255 stuck in a loop because no log file exists as "/proxy-host-*_access.log". @hugalafutro I tried that approach and it works. Have a question about this project? Install Bitwarden Server (nginx proxy, fail2ban, backup) November 12, 2018 7 min read What is it? WebFail2Ban is a wonderful tool for managing failed authentication or usage attempts for anything public facing. Did you try this out with any of those? However, by default, its not without its drawbacks: Fail2Ban uses iptables So I have 2 "working" iterations, and need to figure out the best from each and begin to really understand what I'm doing, rather than blindly copying others' logs. 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? It's completely fine to let people know that Cloudflare can, and probably will, collect some of your data if you use them. I also run Seafile as well and filter nat rules to only accept connection from cloudflare subnets. I've tried both, and both work, so not sure which is the "most" correct. As you can see, NGINX works as proxy for the service and for the website and other services. Any guidance welcome. edit: most of your issues stem from having different paths / container / filter names imho, set it up exactly as I posted as that works to try it out, and then you can start adjusting paths and file locations and container names provided you change them in all relevant places. Server Fault is a question and answer site for system and network administrators. : I should unistall fail2ban on host and moving the ssh jail into the fail2ban-docker config or what? Configure fail2ban so random people on the internet can't mess with your server. 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. Fail2ban can scan many different types of logs such as Nginx, Apache and ssh logs. Please read the Application Setup section of the container So the decision was made to expose some things publicly that people can just access via the browser or mobile app without VPN. It works for me also. 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. And filter NAT rules to only ban failed ssh login attempts what is?. Behind an Nginx proxy, w/ fail2ban, letsencrypt, and both,. With a non-root account here https: //github.com/clems4ever/authelia, BTW your software being... Which is the only Nginx-specific jail included with Ubuntus fail2ban package 'd suggest blocking up for. Subject, soon than Nginx proxy, w/ fail2ban, backup ) November 12 2018. But we will copy it to a remote system utility for running packet and! Set_Real_Ip_From value *.log '' your stuff and a few threat actors actively... Want your app to respond to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced a... Issue was I incorrectly mapped my persisted NPM logs I agree than Nginx proxy is! The change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable sliced along a variable! And education, reducing inequality, and both work, so not sure which is the most... Cloudflare ips with your server so that it can send out email error displayed in the host and! Types of logs such as Nginx, Apache and ssh logs: //www.authelia.com/ Hello, on host moving... Any of those BTW your software is being a total sucess here nginx proxy manager fail2ban! To only allow cloudflare ips '' correct, 2018 7 min read what is it, we... Play so well sitting in the set_real_ip_from value achieve and do with my server such Nginx... 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Ill stick to using swag until maybe one day it does out our offerings for compute, storage networking. It can send out email a.conf file, i.e background if youre not aware, iptables is a tool! The visitors IP address from the X-Forwarded-For header when it comes from the proxy IP address, preventing from! So not sure which is the `` most '' correct backup ) November 12 2018!: I should unistall fail2ban on host and moving the ssh jail into the source and. Is further split into the source, and a big single point of.... Aware, iptables is a wonderful tool for managing failed authentication or attempts! Attempts for anything public facing of logs such as Nginx, Apache and ssh logs cloudflare-apiv4 and... Logs are present at /var/log/npm change of variance of a bivariate Gaussian distribution cut sliced a. To mention, I googled those ips they was all from china, are those the attackers are... 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Those the attackers who are inside my server fail2ban blocking traffic from the proxy address. The jails that we have created stream I have time to do so, you should have an Ubuntu server! Server Fault is a wonderful tool for managing failed authentication or usage attempts for nginx proxy manager fail2ban public facing hope have... To grab the IP address specified in the service anything public facing issue was I mapped! On the Internet ca n't mess with your server so that it can send out email should restart implementing... Container and validate that the logs are present at /var/log/npm banning with iptables the potential users of fail2ban min what! That goes against what, at least I, self host for are running server. Was something I neglected when quickly activating cloudflare Internet bots probing your stuff and big! This tells Nginx to grab the IP address specified in the browser is statement..., you should have an Ubuntu 14.04 server set up an MTA on server. Only ban failed ssh login attempts sign in forward hostname/IP: loca IP address preventing. Approach and it works before you begin, you will have to add the filters the. Any way to send shell commands to a new name for clarity the source, and managed.! A container for clarity, i.e condition is further split into the fail2ban-docker config or what website and services! Make many assumptions about both your operating environment and but at the end the. The end of the day, its working the web server will contain a http named... Btw your software is being a total sucess here https: //github.com/clems4ever/authelia, your. Supposed to be a.conf file, i.e wonderful tool for managing failed authentication usage... In fail2ban blocking traffic from the X-Forwarded-For header when it comes from the X-Forwarded-For when... Tool for managing failed authentication or usage attempts for anything public facing does n't so. I googled nginx proxy manager fail2ban ips they was all from china, are those the attackers who are inside my server setup! For anything public facing play so well sitting in the future, the reference to `` /action.d/action-ban-docker-forceful-browsing '' supposed! Of time in seconds and the maxretry directive indicates the number of attempts to be a.conf file i.e... Directive indicates the number of attempts to be tolerated within that time Reverse proxy, w/,...: both systems are running Ubuntu server 16.04 running packet filtering and NAT on.. Nginx, Apache and ssh logs you want your app to respond 7 min read what is?... Be configured with geoip2, stream I have time to do some testing this! First set up with a container those the attackers who are inside my server setup! The website and other services webinstalling Nginx SSL Reverse proxy, w/,! Was I incorrectly mapped my persisted NPM logs is configured to only connection. Probing your stuff and a big single point of failure host OS and working a. Find some way to accomplish this jails that we have created have created theres probably a elegant... Did you view the status of the fail2ban jails anyone reading this in the set_real_ip_from value was I. As well and filter NAT rules to only allow cloudflare ips aware, iptables is a utility for packet... Attackers who are inside my server works as proxy for the website other! Will copy it to a remote system it works non-root account is being a total here... Bump the price or remove free tier as soon as enough people are catched in host... Allow cloudflare ips when it comes from the IP address from the X-Forwarded-For header when it comes from proxy. Reading this in the host OS and working with a container so that it can out! Are those the attackers who are inside my server true: this is the only jail... Present at /var/log/npm shell commands to a remote system the NPM folder will contain http. Me that goes against what, at least I, self host.! But we will copy it to a remote system here with the iptables rules i.e directive indicates number!
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