diff --git a/INSTALL_DEBIAN_4.0.txt b/INSTALL_DEBIAN_4.0.txt
index fda1a8e8f4e89b79b481c7bef98f4293ea979bd9..13325698c34f19efd7a98f5d59b750712d1b804c 100644
--- a/INSTALL_DEBIAN_4.0.txt
+++ b/INSTALL_DEBIAN_4.0.txt
@@ -198,4 +198,5 @@ rm -rf jailkit-2.5*
 Optional packages recommended:
 
 denyhosts - a utility to help sys admins thwart ssh crackers
+fail2ban - Preventing Brute Force Attacks - http://www.howtoforge.com/fail2ban_debian_etch
 rsync - fast remote file copy program (for backup)
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