[cabfpub] [Ext] BR Authorized Ports, add 8443

Paul Hoffman paul.hoffman at icann.org
Fri Mar 2 15:08:02 UTC 2018

On Mar 1, 2018, at 7:51 AM, Ben Wilson via Public <public at cabforum.org> wrote:
> Forwarding from Richard Wang:
> The current BRs say:
> Authorized Ports: One of the following ports: 80 (http), 443 (http), 25 (smtp), 22 (ssh).
> But many internal networks use the port 8443, broadly used in Apache server, today, one of our customers uses this port and can't change to use another port, I wish you can help to add this port 8443 to be allowed in the BRs, thanks.

It appears that the BRs currently are talking about authorizing *services*, not ports. That is, I would not expect to be able to put a HTTP server on port 22 on my system and have that considered authorized by the BRs.

Any Internet service can be run on any port. Every web, SMTP, and SSH server software configuration allows you to run on the standard ports or any port you choose.

Two suggestions:

- Clarify the BRs to say "Authorized Services and Ports"

- Add text that says only the authorized ports may be used

If CABF folks want to allow issuance of certificates for services on ports other than the standard ports, you will have to decide what it means to initially offer a service on one part and then move it to another port. The PKIX standard does not allow encoding of port numbers for services in certificates.

--Paul Hoffman

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