Cannot connect to UltraVNC Server with ESS firewall active

[Teazle]

Hi there, have tried for a while now to connect from Computer A to Computer B with UltraVNC, to no avail.

Computer A has ESS, with a rule created for UltraVNC Viewer to allow all communication (Inbound/Outbound) - yet it still fails unless I disable the firewall, then it's smooth sailing.

Can anyone enlighten me as to WHY the rule for UltraVNC Viewer fails to allow connection?

edit: updated to add: I'm using it in Interactive mode, under WinXP SP3, latest ESS which was supposed to fix some sort of issue with Interactive Mode, still nothing.

I do however have a theory:

I am currently using a switch to divide my internet connection to Computer A and Computer B.
With ESS active, Computer A cannot reach Computer B's IP and vice versa, using any means at all (FTP, UltraVNC, Ping).
It can however reach Computer B using \\<computer name> in Start -> Run... , leading me to believe I am not finding some setting that ESS enforces.
I have already tried the "Allow file sharing" option, to no luck.

Could anyone help me with this?




Regards

Teazle

[robis]

I am using similar software but I have firewall in Interactive mode (try Interactive mode)

[Marcos]

Perhaps switching the firewall to learning mode to create the necessary rules automatically would be the easiest solution.

[Teazle]

to robis: I have the firewall in Interactive mode, I said so. Did you mean something else?

to Marcos: No dice, still not able to connect, after a series of attempts, including after reboot and with/without VNCViewer rule created. Any other suggestions?..

[Marcos]

I'd suggest enabling the "Log all blocked connections" option in the IDS section of the firewall setup and connecting via VNC. In the firewall log you'll see information about the rule that blocked the connection so that you can subseqently adjust or disable the rule.

[Teazle]

Heh, why didn't I think of that...

Anyway: that gave me the answer, apparently svchost.exe is blocked which is used to connect using VNC.

After fixing that (making sure svchost.exe can correctly connect) I can finally connect, after IDS stopped temporarily blocking connection.

Thank you.