better NAT logging

nat.py

@@ -95,7 +95,10 @@ def main():
     nat_log += aloes_nat.manage()
     logging.info("Done.")
 
-    filename = "/var/log/nat-%s.log" % ctime
+    nat_directory = "/var/log/nat/"
+    if not os.path.exists(nat_directory):
+        os.makedirs(nat_directory)
+    filename = os.path.join(nat_directory, "nat_%s.log" % time.strftime('%Y_%m_%d_%Hh_%Mm'))
 
     logging.info("Saving nat table into " + filename)
     with open(filename, 'a') as f: