can't get vnc to work, with lynksys router

[David Letchumanan]

Since William has given some good explanation I will write my config on
Linksys BEFVP41 (it is similar to BEFSR41 which I have and used at another
location)

All I need to connect to the VNCserver is done in just a couple of steps.

Static IP given to the VNC server below 100 as the dhcp starts from 100 and
onwards.
Portforwarding 5900~5900 to 192.168.1.11
Portforwarding 5800~5800 to 192.168.1.11 (to get the VNCserver through a
browser)
MTU is enabled and set at 1492 (to solve the grey screen, initial loading
pages hangup)

This is it.  Hope this helps.

David


----- Original Message -----
From: "William Hooper" <whooper@freeshell.org>
To: <vnc-list@realvnc.com>
Sent: Thursday, September 19, 2002 8:43 AM
Subject: RE: can't get vnc to work, with lynksys router


> > -----Original Message-----
> > From: vnc-list-admin@realvnc.com
> > [mailto:vnc-list-admin@realvnc.com] On Behalf Of Terry Quinn
> > Sent: Wednesday, September 18, 2002 3:40 PM
> > To: vnc-list@realvnc.com
> > Subject: can't get vnc to work, with lynksys router
> >
> >
> > i have read the through all the questions regarding linksys
> > routers in the archives and it still won't work, i can
> > connect to a computer without a router with no problems at
> > all following is what i've tried
> >
> > - "dhcp" enabled & disabled
>
> This shouldn't matter, though I believe you want to hard code the IP to
> make some of the other options work (like port forwarding).  See the
> article KB10933123 on the Linksys website (search in their Knowledge
> Base).
>
> > - won request enabled & disabled
>
> Didn't see anything about this.  If it is a typo for WAN request, then
> it shouldn't matter.  It looks like that is just for pings.
>
> > -port range 5900~5900 protocol "tcp", ip addr 192.168.1.102
> >   the ip address i rec'd by running "winipcfg"
>
> This is the option that should work.  If you are getting your IP from
> DHCP I guess it doesn't (see above).
>
> > -"dmz host" was enabled & disabled
>
> This is also a way to make it work.  The DMZ, though, is a security risk
> because all ports are forwarded to it.  From a security standpoint this
> is like putting that machine in without the Linksys router.  I believe a
> static IP (instead of DHCP) is required here, too.
>
> > - port triggerig enabled & disabled
> >    application name   "vnc"
> >    trigger port range 5900~5900
> >    incoming port range 5900~5900
>
> This is not what you want.  This is for programs like ICQ that send
> requests out of the network first.
>
> > -anti virus program was disabled
> >
> > i'm running windows 98
> > i can ping the computer
> > i'm connected to the internet by high speed cable, the cable
> > company says that vnc will work through their system but they
> > won't support it any suggestions or comments you have would
> > be appreciated please advise if you need more information
>
> Reasonable.  And since you said it worked without the linksys that means
> they aren't doing any kind of weird blocking of port 5900.
>
> > thanks
> > terry
>
> The above knowledge base article also mentions that it won't work with
> older versions of the firmware (prior to 1.32).  What model number and
> firmware level is your router?
>
> I wish I could give you a step to step, but the only Linksys I could
> look at just got taken out by lightning.  Take a look at the document
> from Linksys, though, because it seems to do a good job. I would give
> you a link, but it turns out to be three lines long.  Search for number
> KB10933123 on their site.
>
> --
> William
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