If you have successfully [installed](/install) YunoHost and passed through the [post-installation](/postinstall), you probably have a **working server**.
If your DNS is well configured, and your server looks is accessible locally, you may have **network ports blocked** or not forwarded by your router.
In order to verify that, try accessing your server with a client outside your local network. For example via another WiFi access point or with your mobile phone in 3G/4G.
If the server is unreachable outside of your local network, then the problem probably comes from your router's configuration.
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Try to activate uPnP in your router's configuration interface, and check that your server is plugged in Ethernet directly behind it.
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You can also redirect ports manually to your server's local IP address on this router's configuration interface.
If the server is accessible from outside your local network, but unreachable with its domain name on the local network, then your router probably lacks of <ahref="http://en.wikipedia.org/wiki/Hairpinning"target="_blank">hairpinning</a>.
You cannot avoid that in a simple way. If you know how to do it, juste configure the `/etc/hosts` of your local clients to access your server with the local IP. Else, retry the installation with a **.nohost.me** or **.noho.st** domain.