added -U option for packetwise buffering to tcpdump

networksnif.sh

@@ -9,7 +9,7 @@ LOCAL_IP="172.31.129.98"
 
 touch "$DUMP_DIR/logfile"
 echo "Starting capturing on interface $DUMP_IF to file $DUMP_DIR/$DUMP_FILE"
-tcpdump -i "eth0" -z gzip -w "$DUMP_DIR/$DUMP_FILE" -s 0 -nn -vvv  "(src host $LOCAL_IP and not src port $SSH_PORT) or (dst host $LOCAL_IP and not dst port $SSH_PORT)" >> "$DUMP_DIR/logfile" &
+tcpdump -i "eth0" -z gzip -w "$DUMP_DIR/$DUMP_FILE" -s 0 -nn -U -vvv  "(src host $LOCAL_IP and not src port $SSH_PORT) or (dst host $LOCAL_IP and not dst port $SSH_PORT)" >> "$DUMP_DIR/logfile" &
 TCPDUMP_PID=$!
 echo "Capturing works on PID $!"