How to reach ArcGIS online?

[JohannesBierer]

Are there special settings for the firewall to be able to publish things on ArcGIS online?

Aktually Networkrouting Test - Failed

[RebeccaStrauch__GISP]

Johannes, can you supply more detail on the issue you are having?  It may help in getting others to respond to your question.

Is the network failing something internal to your agency?  I'm assuming the only firewall settings that are needed are to be able to access the Internet, but I am not a firewall expert.

But it may help for others to answer if they know if you can't see the main  http://www.arcgis.com/home/   at all, or if you are having issues accessing a personal or organizational account.

[JohannesBierer]

No I can't open this side.

If I try to log in through ArcGIS it's as well not possible:

Sorry it's german ...

Our IT is of the opinion that it could be the firewall?