Automatic closure of repeater port

[winmansoft]

We use following
1. Compiler - ChunkVNC 3.3.1
2. Repeater - UltraVNC 2011 V2.00
3. Hosting - Goddady Virtual dedicated server.
Some times "Listen port server" of repeater closes. If we exit the repeater and re-open it, port will be available. Till what time port will be open is not certain. Some times it gets closed within a minute and some times after one day. Some times it will not close for 2,3 days also. We want know what are the possible reasons for this closure of port in repeater. We have removed antivirus and switched off Windows Firewall also. Still problem occurs. Please help.

[supercoe]

Another user was having this problem, it turned out they had the repeater setup incorrectly.
https://forum.ultravnc.net/viewtopic.php?f=50&t=29035

Have you tried using the repeater included with 3.3.1?
Is the repeater set to mode 2 only?

[winmansoft]

Thanks for the reply,

We use the repeater 3.3.1 and it is set to mode 2 only.

[supercoe]

Unless the repeater is crashing the only thing I can think of is that it's possibly a problem with the hosting provider.
Sorry I can't think of anything else at this point.

[B]

On re-examination, this same user started both threads. He or she is just not having much luck with GoDaddy and the repeater...

[winmansoft]

We have observed strange behavior yesterday when one customer opens instant support repeater port was getting closed and when that customer closed instant support repeater port was opened itself. it happened two three times. Any reasons for this behavior?. there is no antivirus

[supercoe]

Sorry I don't have an explanation for you on this one, you are the first I've heard of such a thing.
Are you still using Godaddy VPS for your repeater? If so, could you please try a different provider just so we know that isn't the problem?

[winmansoft]

If instant support opened in a System having antivirus Escan, then the repeater port closes. What is thr reason for this? If antivirus disabled then it works.

[B]

Oh then that explains it. The antimalware suite includes a software firewall. Just tell it that ChunkVNC is a trusted program (or disable the firewall portion, or pick a better antimalware product).

This would be a problem with ANY software firewall and ANY remote control program.

[winmansoft]

If instant support is opened in a System with "Escan" antivirus, then the repeater port closes. In the same system PC_helpware works. Both instant support & PC_helpware connect to same website & same repeater.(port number is also same). But only when instant support is opened, repeater's port gets closed. why?

I think we need to draw our attention to some possible bug in Instant support!

[supercoe]

ChunkVNC is written in the AutoIt language which a lot of (poor) virus scanners don't like.
Not much we can do here except tell the antivirus to mark it as safe.

Just for notes if it helps:
InstantSupport makes an outgoing connection the repeater server port to make sure it's up.
Then it launches the UltraVNC server making the reverse connection.
You could try doing a manual reverse connection with the UltraVNC server to see if Eset still blocks it.
It might be a matter of removing the initial check that InstantSupport does.

[Znida]

I think i found a solution to this problem. It is when script is testing for LAN address. At least it was with mine. Using modified 3.3.1. I commented this line:

Code: Select all

	; Test WAN address first.
	;$socket = TCPConnect( TCPNameToIP( $RepeaterAddress ), $RepeaterServerPort )
	;If $socket = -1 Then $LanMode = True

and now it is connecting normally and right away. Dont know why.

[B]

Well yeah, that's pretty much what supercoe said. The antimalware didn't mind when VNC tried opening the socket, but it flagged InstantSupport when that AutoIT script tried doing it...

[Znida]

If this is a reply to me, I dont think my antivirus was blocking anything. It was just stuck. When I closed the program, it briefly connected to repeater...

[winmansoft]

well i commented the line.. still the problem persists..
if someone can come up with the right answer...