Andrew Arnott | 23 Jul 21:53
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Re: [OpenID] web server - outgoing connections?

RPs are required to make outgoing HTTP connections, and should use a 'paranoid http library' to mitigate the issue you speak of.

On Wed, Jul 23, 2008 at 10:33 AM, Egon Kocjan <egon <at> krul.ath.cx> wrote:
Hello,

I am new to openid, so forgive me if this will sound obvious. Let's say
I have a web site and I want to support openid, so users of my site will
be able login using their openid url. The trouble I see here is that my
web server will have to connect to random IPs on the internet as a part
of authentication process*, am I right? Is there an authentication mode,
where client's browser does all the outgoing communication?

* why this is a problem:
- I don't want my web server to be used in ddos attacks
- companies that are serious about security usually deny unrestricted
outgoing connections from servers, so it's also a deployment issue

Thanks,
Egon

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Gmane