[WLUG] Web wizardry....

[Jeff Hanson]

A VPN seems like the simplest solution when a firewall is involved.

On Sun, Jan 14, 2018 at 1:44 PM, Mark J. Bobak <mark at bobak.net> wrote:

> Ok, probably not wizardry....but, as Arthur C. Clarke said, "Any
> sufficiently advanced technology is indistinguishable from magic."  ;-)
>
> Seriously though, I'm *really* not a web guy...at all!
>
> Here's what's going on:
> We use an online service called PDFCrowd to convert HTML to PDF.  We make
> a call to a webservice, pass a URL of the HTML to be converted, and it
> returns PDF.
>
> The problem is, some of the servers that hold the HTML to be converted,
> are now behind a firewall.  So, this is broken.
>
> Our environment is on AWS, so, for those of you familiar, we have a VPC
> (Virtual Private Cloud), that has private and public subnets.  The problem
> hosts are in private subnet, so, have only private IP.  Access is achieved
> by being in the office, where we have an always-on VPN tunnel, or via
> SSLVPN client and two-factor authentication.
>
> So, I'm thinking I need some type of proxy (maybe the wrong term) running
> on host in public subnet, which can accept incoming connection from
> PDFCrowd, and connect back to private host on private subnet to retrieve
> the HTML and pass it back to PDFCrowd.
>
> So, I want host on public IP, call it pub, to act as intermediary, connect
> to host on private IP, call it priv, and pull the HTML and return it.
>
> Not sure where to begin.....is this a proxy?  Squid?  Something else?
> Server-side script on pub?
>
> Any thoughts or advice to point me in the right direction, would be
> appreciated.
>
> AdvThanksance.
>
> -Mark
>
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