diff --git a/content/en/admin/prerequisites.md b/content/en/admin/prerequisites.md
index e6c3029..6f5a3a4 100644
--- a/content/en/admin/prerequisites.md
+++ b/content/en/admin/prerequisites.md
@@ -45,6 +45,7 @@ port = 22
 
 [sshd-ddos]
 enabled = true
+filter = sshd
 port = 22
 ```