1 files changed, 4 insertions, 0 deletions
diff --git a/src/conf_mode/dynamic_dns.py b/src/conf_mode/dynamic_dns.py
index d55e732df..9f2d3b836 100755
--- a/src/conf_mode/dynamic_dns.py
+++ b/src/conf_mode/dynamic_dns.py
@@ -18,6 +18,7 @@ import os
 import sys
 import jinja2
 
+from stat import S_IRUSR, S_IWUSR
 from vyos.config import Config
 from vyos import ConfigError
 
@@ -271,6 +272,9 @@ def generate(dyndns):
     with open(config_file, 'w') as f:
         f.write(config_text)
 
+    # Config file must be accessible only by its owner
+    os.chmod(config_file, S_IRUSR | S_IWUSR)
+
     return None
 
 def apply(dyndns):