Re: Request for List of URLs Needed for R Package Installation

   One caveat: I think CRAN/Bioconductor mirrors will be self-contained 
if you're installing *binary* packages, but I wouldn't rule out the 
possibility that installations from source could also download material 
from other URLs as part of the install process ...

On 2025-11-20 1:01 p.m., Bert Gunter wrote:
> Yup. And if I understand correctly, "mirrors" are mirrors -- i.e. they will
> all contain exactly the same content once any updates have a chance to
> percolate through. Hence, choosing just one each of a CRAN and Bioconductor
> mirror should suffice, with perhaps a backup should one or the other go
> down for some reason. For security reasons, I would stay away from Github
> or any other repository not listed in the official CRAN listing that Chris
> provided. As I understand it, all of these mirrors are self-contained and
> would not contain dependencies that go outside CRAN. **
> 
> ** If any of the above is wrong or requires clarification, please post a
> correction. **
> 
> Cheers,
> Bert
> 
> On Thu, Nov 20, 2025 at 9:12 AM Chris Ryan <[email protected]>
> wrote:
> 
>> That's a tall order.
>>
>> I'm no expert, but I believe you can specify what CRAN mirror to use
>> when obtaining packages. I don't know if an institution could restrict a
>> user to using just one of them.
>>
>> Here is a list of CRAN mirrors:
>>
>> https://cran.r-project.org/mirrors.html
>>
>> I've never used Bioconductor, but here is a list of mirrors:
>>
>> https://bioconductor.org/about/mirrors/
>>
>> --Chris Ryan
>>
>>
>> Jyoti Prajapati wrote:
>>> Dear R Team,
>>>
>>> I am currently setting up R in the Bank of Baroda environment, and as
>> part
>>> of the security process, I need to request whitelisting of all
>> URLs/domains
>>> required for installing R packages (including dependencies).
>>>
>>> To complete this request, I kindly ask you to please share the *full list
>>> of URLs, domains, CRAN/Bioconductor mirrors, GitHub links, and any other
>>> repositories* that R connects to during installation and updating of
>>> packages.
>>>
>>> Once I receive the list, I will forward it to the Network/IT Security
>> team
>>> for whitelisting.
>>>
>>> Requesting your support in providing this information at the earliest.
>>>
>>> Thank you.
>>>
>>> Regards,
>>> *Jyoti Prajapati*
>>> Manager – Model Validation
>>> Risk Management Department
>>> Bank of Baroda
>>>
>>>        [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> [email protected] mailing list -- To UNSUBSCRIBE and more, see
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide
>> https://www.R-project.org/posting-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>> ______________________________________________
>> [email protected] mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> https://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> [email protected] mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide https://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Dr. Benjamin Bolker
Professor, Mathematics & Statistics and Biology, McMaster University
Director, School of Computational Science and Engineering
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