Re: MySQL communication around a firewall

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 03 Dec 2007 22:07:39 -0500
Message-ID:
<4754c472$0$90269$14726298@news.sunsite.dk>
H.L wrote:

My Java web start application connects to a remote MySQL server hosted
on a Tomcat server via the MySQL connector JDBC driver. The idea was
that it connects through the standard port 3306, but the administrators
are reluctant to allow anything through the firewall. We have raised the
idea of communicating through another port. That port would be opened to
connections from outside the firewall. This seems to imply that the
client must also have opened that port. What kind of problem is this
likely to cause? I would have thought that all ports were open on the
client side. Perhaps this is just the case for 3306 and some other
default values. It would then become an issue of whether we want to ask
users to start mucking around with their network settings. I need to
shed some light on this thing. Thanks in advance.


If you can get permission to run a web or app server that connects to
MySQL and they will route HTTP traffic to that server through the
firewall, then you an go that route.

You can expose a web service. Java web app or PHP or ASP.NET.

It would be a fair assumption that the clients will be able to
do outbound HTTP either direct or via a proxy server.

Arne

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