Veja Apt-Proxy .
apt-proxy is a program that caches the packages you download from the Internet, to your hard disk. Because apt-proxy behaves as if it were a HTTP server with a full copy of the repositories you select, you can access the packages from other computers on your network. If a package is not in the cache, apt-proxy automatically downloads and caches it. This can significantly decrease download bandwidth and installation time when you have to install the same packages repeatedly (i.e. an upgrade of multiple machines).
Atualização : foi encontrada outra pergunta semelhante em Apt-cacher e Apt-proxy , que sugere o uso de aprox .
Veja também o artigo eHow sobre Alternativas para o Apt-proxy para obter um breve resumo .