Do not set null cipher as default

site.conf

@@ -46,7 +46,7 @@
 		fastd = {
 			-- cipher(s) to use
 			configurable = true,
-			methods = {'null', 'salsa2012+umac'},
+			methods = {'salsa2012+umac'},
 		},
 
 		-- default traffic shaping (bandwidth limit) settings