diff --git a/kamailio/antiflood-role.cfg b/kamailio/antiflood-role.cfg
index 35a370d..63ac37e 100644
--- a/kamailio/antiflood-role.cfg
+++ b/kamailio/antiflood-role.cfg
@@ -5,8 +5,7 @@
 #!trydef ANTIFLOOD_FAILED_AUTH_DENSITY 3
 
 ######## Flood Prevention Hash Tables ########
-modparam("htable", "htable", "ipban=>size=8;autoexpire=300;")
-modparam("htable", "htable", "failed_auth_hash=>size=8;autoexpire=125;")
+modparam("htable", "htable", "failed_auth_hash=>size=8;autoexpire=3600;")
 
 ######## Flood Prevention Module ########
 loadmodule "pike.so"
@@ -21,17 +20,9 @@ route[ANTIFLOOD_RATE_LIMIT]
         return;
     }
 
-    if($sht(ipban=>$si)!=$null) {
-        # ip is already blocked
-        xlog("$ci|log|dropping $rm request from $fu with banned IP $si:$sp");
-        drop();
-        exit;
-    }
-
     # use pike to control the rates
     if (!pike_check_req()) {
         xlog("L_WARN", "$ci|log|pike dropping $rm from $fu due to rate of requests with source $si:$sp");
-        $sht(ipban=>$si) = 1;
         drop();
         exit;
     }
diff --git a/kamailio/registrar-role.cfg b/kamailio/registrar-role.cfg
index 5b677ad..72e06cd 100644
--- a/kamailio/registrar-role.cfg
+++ b/kamailio/registrar-role.cfg
@@ -102,9 +102,9 @@ route[ATTEMPT_AUTHORIZATION]
         exit;
     }
 
-    if ($kzR != $null) {
-        xlog("L_DBG", "$ci|log|caching SIP credentials for $Au");
-        $sht(auth_cache=>$Au) = $avp(password);
+    if ($sht(auth_cache=>$Au) == $null) {
+        xlog("L_INFO", "$ci|log|caching SIP credentials for $Au");
+        $sht(auth_cache=>$Au) = $var(password);
     }
 
     # user authenticated - remove auth header