Unable to connect to Adobe Connect from corporate firewall/proxy

Hello Adobe,

Our legal department have purchased a license for Adobe Connect from yourselves via an external third party, but they can never view any of the webinars hosted externally by yourselves.

I work for our Technical department and have been asked to look into this.  One of my colleagues also looked into this a few months ago, but received no word/help or advice back about this.

Scenario: Our legal team need to view a webinar via Adobe Connect hosted externally from a corporate Windows 7 laptop

Laptop is on a corporate network which uses a proxy server (port 8080) to connect to the internet.

They cannot get through to the webinar - sometimes crashes Internet Explorer (v8 and v9 tested), may sometimes get through but it hangs for long periods of time - namely - it's totally unworkable.

On speaking to a tech a few months ago they said this could only be bandwidth issues (we're on a 100MB leased line so it's definately not bandwidth).

Now, what I believe we require is the full pre-requisites of what an organisation needs to do to their firewall environment to allow through these basic connections......Needless to say we also run GotoMeeting and before we set this up they provided us with a full list of tcp/udp ports and options and what needed to be whitelisted etc....I cannot see or find any of this from within Adobe help or FAQ.....(http 1.1 and turning off a pop-up blocker is not what I mean here too).....

Can someone in the know please direct me to what we need to do to get this working?

Regards,

Tony Joyce