VNC over different subnet mask
Fri Jun 20 13:49:01 2003
"Beerse, Corni" said:
>> -----Original Message-----
>> From: firstname.lastname@example.org
>> When I try to connect with VNC from my PC (old
>> scope) to a new PC (new
>> scope) it fails. I've changed my subnet mask to
>> 255.255.248.0, but it stills fails. Is there anyway around it?
> As long as a machine thinks it is on the old network, all addresses
> this network are forwarded to the defined gateway.
> Only if the gateway has its network-connection configured for the old
> network and has updated routing tables to route messages to the new
> (but not in the old network) back to the old network, then you might get a
Nope. Even if the gateway knows that it is the same wire, the new machine
doesn't think it needs to use the gateway. The purpose of subnet masking
is to avoid using the gateway.
> Hence, best to do a big-bang update of all machines: proper operating
> systems can do that on the fly.[snip]
Agreed. There is still the question of why it doesn't work after changing
the subnet mask to be the same. It is really a TCP/IP problem, not a VNC
one. Waiting on the results of the ping as suggested by Dave Warren.