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Firewall may be blocking requests

Simple, Free, Open Source UltraVNC Wrapper Supporting Windows and Mac OSX
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vicspain
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Firewall may be blocking requests

Post by vicspain »

Hi,

I have a customer who is behind a real firewall and I am not seeing the session id in the Repeater come thru. I assume this is because it is blocking outgoing ports. Is there a way to change the port to something like 80 so that I can use UltraVNC for this customer. I'm having no problems with other customers but they are small business and home users.

Any other ideas would be welcomed!


Vic
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Re: Firewall may be blocking requests

Post by B »

1. Yes, you can certainly specify port 80 at either a repeater or VNC server (or listening viewer for that matter).

2. The problem may persist, however, if even port 80 connections are actually being PROXIED on that customer's network (rather than merely being allowed directly out).

3. Someone contributed a mod to the Chunk project specifically to get around this sort of problem. It's down in this forum at [topic=17586][/topic]

4. If the customer is behind a corporate (or even merely privately owned) firewall, be sure you are not violating their rules by circumventing the firewall technically or in spirit...

5. Since the repeater only listens on one port, naturally you will be cutting off your existing users when you change ports. You could run more than one instance of the repeater though.

6. Of course if the machine hosting the repeater already has something (like a web server) running on port 80, you still have a problem.
Last edited by B on 2010-06-26 03:22, edited 1 time in total.
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