From dce980ddb127a470b188fd6efbfb8ddb5b0fe315 Mon Sep 17 00:00:00 2001
From: ene <ene@sils.li>
Date: Sat, 25 Mar 2023 14:00:29 +0100
Subject: Feat(system/services/fail2ban): Add dovecot jail

This should reduce the log spam even further.
---
 system/services/fail2ban/default.nix | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'system')

diff --git a/system/services/fail2ban/default.nix b/system/services/fail2ban/default.nix
index 949b486..5aee097 100644
--- a/system/services/fail2ban/default.nix
+++ b/system/services/fail2ban/default.nix
@@ -17,5 +17,14 @@
       multipliers = "2 4 16 128 256";
       maxtime = "72h";
     };
+    jails = {
+      dovecot = ''
+        # block IPs which failed to log-in
+        # aggressive mode add blocking for aborted connections
+        enabled = true
+        filter = dovecot[mode=aggressive]
+        maxretry = 2
+      '';
+    };
   };
 }
-- 
cgit 1.4.1