Re: visigenic visibroker protocols through firewalls

[Jeremy Epstein <jepstein () tis com>]

> Does anyone have any information about how to let VisiBroker protocols
> (some kind of Java ORB IIOP protocol, to build Java client-server
> applications, made by company called VisiGenic www.visigenic.com now owned
> by Borland) through firewalls? 

Concept 5 (www.concept5.com) is working with Visgenic.  They have some
reasonably good stuff on their web page.

> Are there specifications for how the protocols work, what must be opened
> to let them through?

IIOP is described on the OMG web page (www.omg.org).  It's not the easiest
thing in the world to find, but it is there.

> We are using address translation and I am afraid it might be so that the
> protocols embed IP numbers inside the packets, so when client connects to
> server, the server tries to connect back to clients internal address
> (client in internal net, server in DMZ). 

If I'm understanding you correctly, that *could* be a problem.  IORs are in
a vendor-specific format, so a vendor could include an IP address, which
you would then have to deal with translating.
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