Thanks Steve,

I will try creating a reg file to do this for my Dad, but it doesn't really
help with trying to access unix based mol biol databases where I have no
control over the port the server is listening on.

So I still need to try and get the proxy client working.

Any clues?

Mark

>===== Original Message From "Steve Palocz" <[EMAIL PROTECTED]> =====
>Hey Mark.
>
>I hear what you are saying. most scanning software won't scan if it can't
>get an icmp response. So you may have port 80 open. I suggest using the
>native att vnc server and set it to port 80. Do this in the registry after
>turning off auto port. Use the native viewer, once you get this working then
>work on the more difficult.
>
>Hope this helps.
>If you need more, don't hesitate.
>
>Steve
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]]On Behalf Of Mark Peterson
>Sent: Tuesday, October 23, 2001 11:44 AM
>To: [EMAIL PROTECTED]
>Subject: VNC through evil nasty firewall
>
>
>I am behind a country wide firewall.  No ICMP packets can get through and
>even
>port 119 is blocked.  Ports 20 ,21, 23, 25, 80 and 110 are open, but I'm not
>sure about any others as any port scanner tells me all ports (even 80, 20
>and
>21) are blocked, which is clearly not the case, so I guess they are all ICMP
>dependent.  Proxy software being run on the firewall machines can vary -
>mainly mozilla, squid or apache according to VisualRoute reports (of the
>machine that's blocking the ICMP packets).  Can't use UDP (no VOIP or
>streaming real content (except by HTTP)).  Can use HTTPort to get news and
>IM
>- though they've just opened to messaging.  I'm very keen to use VNC for
>everything from helping my aging technophobic father out with his computer
>to
>accessing unix based molecular biology databases.  I've tried using HTTPort
>to
>tunnel, and have also tried using Harmen van der Wal's VNC client (although
>even this required learning more about Java than I knew before - now FA
>rather
>than its square root) - I get as far as the password screen and then get the
>following error (I give command line syntax with proxies first):
>
>C:\>java -cp
>c:\winnt\java\classes\classes.zip;c:\progra~1\opera\javaruntime1.3.
>1\lib\vncviewer.jar vncviewer HOST 62.136.145.253 PORT 5900 PROXYHOST1
>195.124.3
>2.99 PROXYPORT1 80
>//hw// Using one proxy
>//hw// Connect: 62.136.145.253
>//hw// Proxyhost: HTTP/1.0 502 Proxy Error ( Der Zugriffs-Code ist
>unzuldss
>ig.  )
>java.io.EOFException
>        at java.io.DataInputStream.readFully(Unknown Source)
>        at java.io.DataInputStream.readFully(Unknown Source)
>        at rfbProto.readVersionMsg(rfbProto.java)
>        at vncviewer.connectAndAuthenticate(vncviewer.java)
>        at vncviewer.run(vncviewer.java)
>        at java.lang.Thread.run(Unknown Source)
>java.io.EOFException
>
>So my ignorant questions are:
>
>1) Is it going to be possible to use VNC or should I just give up now?
>
>2) If it is, should Harmen's patched VNC viewer work, and can anyone explain
>the above error message?
>
>3) (off topic - so don't expect any reply to this question really) any
>suggestions as to how I can find out which ports are open so that I can try
>and direct VNC traffic through these?
>
>Thanks a lot for any suggestions you may have.
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