bab1c13e_ling_BioPerl_on_Unix___BioPerl__Description
[Env. Variable] http_proxy [Description] 
If you access the internet via a proxy server then you can tell the Bioperl modules which require network access about this by using the http_proxy environment variable. The value set includes the proxy address and port, with optional username/password for authenticating proxies. e.g. http://USERNAME:PASSWORD@proxy.example.com:8080
Installing BioPerl on Unix - BioPerl
Description