Index: configs/sip.conf.sample
===================================================================
--- configs/sip.conf.sample	(revision 192278)
+++ configs/sip.conf.sample	(working copy)
@@ -86,7 +86,7 @@
 
 [general]
 context=default                 ; Default context for incoming calls
-;allowguest=no                  ; Allow or reject guest calls (default is yes)
+allowguest=no                   ; Allow or reject guest calls (if omitted default is yes)
 ;match_auth_username=yes        ; if available, match user entry using the
                                 ; 'username' field from the authentication line
                                 ; instead of the From: field.
Index: configs/extensions.conf.sample
===================================================================
--- configs/extensions.conf.sample	(revision 192278)
+++ configs/extensions.conf.sample	(working copy)
@@ -609,6 +609,10 @@
 ;exten => 2,1,Goto(default,mark,2)
 
 [default]
+; W A R N I N G
+; Read Security document in doc/tex/asterisk.tex before changing 'default' context
+; Example: sip.conf may have allowguest=yes 
+
 ;
 ; By default we include the demo.  In a production system, you 
 ; probably don't want to have the demo there.