docs: add fail2ban instructions

www/docs/deployment.md

@@ -0,0 +1,34 @@
+## Fail2ban
+
+File Browser does not natively support protection against brute force attacks. Therefore, we suggest using something like [fail2ban](https://github.com/fail2ban/fail2ban), which takes care of that by tracking the logs of your File Browser instance. For more information on how fail2ban works, please refer to their [wiki](https://github.com/fail2ban/fail2ban/wiki).
+
+### Filter Configuration
+
+An example filter configuration targeted at matching File Browser's logs.
+
+```ini
+[INCLUDES]
+before = common.conf
+
+[Definition]
+datepattern = `^%%Y\/%%m\/%%d %%H:%%M:%%S`
+failregex   = `\/[a-z]*\/[a-z]*: \d{3} <HOST> *`
+```
+
+### Jail Configuration
+
+An example jail configuration. You should fill it with the path of the logs of File Browser, as well as the port where it is running at.
+
+```ini
+[filebrowser]
+
+enabled = true
+port = [your_port]
+filter = filebrowser
+logpath = [your_log_path]
+maxretry = 10
+bantime = 10m
+findtime = 10m
+banaction = iptables-allports
+banaction_allports = iptables-allports
+```