bower behind a proxy

Edit your .bowerrc file and add the wanted proxy configuration:

{
    "proxy":"http://<host>:<port>",
    "https-proxy":"http://<host>:<port>"
}

If working behind an authenticated proxy, user and password should be included like this:

{
    "proxy":"http://<user>:<password>@<host>:<port>",
    "https-proxy":"http://<user>:<password>@<host>:<port>"
}

Usually, the .bowerrc is next to the bower.json. And if there is no .bowerrc file near the bower.json file, you can create one by yourself.