How to install R packages via proxy [user + password]

Question

I need authentication to use internet, say these are my variables:

1. Proxy : 1ncproxy1
2. Port : 80
3. Loggin : MyLoGiN
4. Pass : MyPaSs
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Answer 1

As @juba states, I think you want to set the http_proxy. From ?download.file:

Usernames and passwords can be set for HTTP proxy transfers via environment variable http_proxy_user in the form user:passwd. Alternatively, http_proxy can be of the form "http://user:pass@proxy.dom.com:8080/"

So, try: Sys.setenv(http_proxy="http://MyLoGiN:MyPaSs@1ncproxy1:80")

Be aware though:

These environment variables must be set before the download code is first used: they cannot be altered later by calling Sys.setenv.

So you are best off calling it in your .Rprofile