Hi Hydor,
I suspect that you are running into the same conflicts I do when running
multiple tunnels and trying to use port forwarding. Each Service/Appl. is
attempting to open and own the ports on the specified interface, as there
are more than one Service/Appl. only the first to start is successful; I.E.
With Multi NIC, W/O 'Allow Loopback';
VNC Listens on IPANY 0.0.0.0 (NIC # N,...) Ports 580x/590x
SSHD listens on LOOPBACK 127.0.0.1 Ports 580x/590x,
Forwards via NIC # N Ports 580x/590x Direct (590x <> 590x)
All is well.
With 'Allow Loopback';
VNC Listens on IPANY 0.0.0.0 (NIC # N,...) + LOOPBACK 127.0.0.1 Ports 580x/590x
SSHD listens on LOOPBACK 127.0.0.1 Ports 580x/590x,
Forwards via NIC # N Ports 580x/590x Direct (590x <> 590x)
Thus both Service/Appl. is trying to OWN 127.0.0.1/590x !
The solution is to Map (Redirect) a different port for VNC's Loopback on
the SSHD server.
Say Server(SSHD) runs VNC on VNC port 10 and others machines run
VNC on VNC port 0 (Default). Thus to connect to the SSHD server you would
need to specify IPADDR:10. but not change the behavior of all the other
machines. Then; I.E.
With 'Allow Loopback';
VNC Listens on IPANY 0.0.0.0 (NIC # N,...) + LOOPBACK 127.0.0.1 Ports
5810/5910
SSHD listens on LOOPBACK 127.0.0.1 Ports 580x/590x,
Forwards via NIC # N Ports 580x/590x Direct (590x <> 590x)
In this Scenario you can forward up to 10 VNC shared connections per
internal machine before 5810/5910 would be a conflict. This was the
simplest way for me. Hope this helps.
Best Regards,
Jim
------------- Original message text ------------------
Received: Saturday, December 02, 2000, 11:06:26 PM
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Subject: LoopBackOnly registry Key
Files: <none>
Hello Chaps
I am using VNC ver 3.3.3 R7 for Windows. Running on NT 4 WS. (SP6a, with
128bit high encryption.)
Using VShell ver 1.02B SSH2 Server from Van Dyke Technologies Inc. (
http://www.vandyke.com/)
Client machine is running SecureCRT SSH2 client, also from them. (Same
machine as above, but with std. version of SP6a)
SSH2 Client config: SSH port: 22
Cipher: 3DES
MAC: MD5
have port forwarding enabled on the SSH2 client. Everything works like a
dream, until I try to Implement LoopbackOnly on the VNC Server. (which is
also the SSH2 Server.)
If I set the value of the LoopbackOnly registry key to 1 on my SSH2
server, then try to run the vncViewer utility from my client machine, I
cannot connect. No error message, nothing.
Any ideas?
Thanks.
Cheers.
Hydor Honiball
T +44 (0) 1784 410438
F +44 (0) 1784 410444
Mobile: 079 6750 7375
http://www.aspective.com
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