# Internet access error **URL:** \ **Category:** Help\ **Created:** [January 5, 2022, 12:36pm UTC](https://vaultwarden.discourse.group/t/internet-access-error/1364 "2022-01-05T12:36:26Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![cksapp](https://avatars.discourse-cdn.com/v4/letter/c/b9e5f3/32.png) [@cksapp](https://vaultwarden.discourse.group/u/cksapp)\ **Post date:** [January 5, 2022, 6:37pm UTC](https://vaultwarden.discourse.group/t/internet-access-error/1364/2 "2022-01-05T18:37:17Z")
This may be a firewall related issue in the Synology NAS See this post > [@In "Vaultwarden Admin Panel" Diagnostics does not work](https://vaultwarden.discourse.group/t/in-vaultwarden-admin-panel-diagnostics-does-not-work/1172/7): > > I would like to take up this topic once again… After some testing on my network and some internet research I was able to solve the problem without compromising the security of my NAS. But from the beginning: Beyond the problem, described at the beginning of this thread (Diagnostic does not work), logging into the Vaultwarden Web Vault with the Yubikey as second factor also stopped working with the firewall configuration below: Rule 1 =\> ALL-ALL =\> xxx.xxx.xxx.xxx (my fixed IP) =\> Allow. Rule… It may help --- _[View the full topic](https://vaultwarden.discourse.group/t/internet-access-error/1364)._