diff --git a/osect_sensor/Infrastructure/edge_cron/work/ot_tools/bro.sh b/osect_sensor/Infrastructure/edge_cron/work/ot_tools/bro.sh
index 7019791..a225810 100755
--- a/osect_sensor/Infrastructure/edge_cron/work/ot_tools/bro.sh
+++ b/osect_sensor/Infrastructure/edge_cron/work/ot_tools/bro.sh
@@ -13,6 +13,9 @@ reformat_log () {
 }
 
 cd $1/$2
+# conn_long.logと重複するためconn.logに出力されるduration>60を除外
+awk '$9<60{print}' $(find /opt/zeek/logs -name "conn.*.log") > "/opt/zeek/logs/conn_replace.log"
+rm $(find /opt/zeek/logs -name "conn.*.log")
 # conn.logとconn_long.logの両方を回収
 merge_log "conn*.log" "conn.log"
 merge_log "arp.*.log" "arp.log"