Re: Using VNC through VPN and firewall + works when connected to DSL directly

From: Duane Arnold (darnold92@Insightbb.com)
Date: 12/09/02 

From: "Duane Arnold" <darnold92@Insightbb.com>
Date: Mon, 09 Dec 2002 01:44:22 GMT

Then I assume that you are Port Forwarding or mapping the port on your
router to the IP/machine that needs the incoming port opened.

Duane :)

"Dave" <junk@junkmail.com> wrote in message
news:31SI9.17532$CU3.14020@news4.srv.hcvlny.cv.net...
> That doesn't sound like it since if I connect directly to my DSL modem or
> cable modem at home I can connect to my company network through the VPN
just
> fine and get VNC and browsing to work perfectly. (side note, this is a
> legitimate business need.).
>
> The firewall/NAT must be blocking something coming back, but I don't know
> what. I've tried everything I can think of. I tried 3 different routers,
a
> nexland, linksys and the sonicwall and all had the same issue. When I
don't
> use any router as I said things work great, but that isn't a viable
option.
>
> Any ideas what is preventing VNC getting back through the firewall/routers
> or the browsing not working?
>
> Thanks
>
>
>
>
>
> "Duane Arnold" <darnold92@Insightbb.com> wrote in message
> news:voPI9.287006$1O2.19978@sccrnsc04...
> > Sounds to me like your company's firewall is not letting outgoing
network
> > traffic on the port VNC needs for outgoing.
> >
> > Unless your company allows this type of connection to your ISP, you're
not
> > going to be able to do it. Most companies don't allow this and the
> security
> > admin would be stupid to allow you to do it.
> >
> > 1) because of the security risk
> > 2) You are sucking-up bandwidth the company needs for legitimate
business
> > needs.
> >
> >
> > Duane :)
> >
> >
> > "Dave" <junk@junkmail.com> wrote in message
> > news:S%OI9.15684$CU3.158@news4.srv.hcvlny.cv.net...
> > > I'm trying to connect to my office VPN through my sonicwall and use
VNC
> > > through it but it does not appear to work. I seem to have two
problems
> > with
> > > my remote access.
> > >
> > > I'm using the netscreen VPN client to connect to my office VPN through
> my
> > > home sonicwall, that connects just fine.
> > > I can ping IP's on my office network.
> > >
> > > 1. If I try to VNC to the IP address where my VNC server is running it
> > > connects and asks for a password and seems to authenticate but comes
up
> > with
> > > a black screen and stays that way. (On the older version of VNC it
just
> > says
> > > initial screen loading with a grey screen but never displays anything
> > else).
> > >
> > > 2. Second thing I've noticed is I can view a machines top level shares
> but
> > > can't view the directories in that share. For example \\machine1
views
> > > machine 1's shares (I have a hosts file), but if a double click on one
> of
> > > those sharesit hangs and says network name not found.
> > >
> > > I connected my machine directly to my DSL modem and everything works
> > great.
> > > (Other sidenotes.. I have norton firewall on my home machine but that
> does
> > > not seem to matter since I can connect just fine when not behind my
> > > sonicwall. I have tried changing IP addressing schemes, still no
luck.
> I
> > > tried using a linksys firewall instead of the sonicwall, and still no
> luck
> > > getting VNC to connect or accessing shares)
> > >
> > > Anyone have any ideas?
> > >
> > >
> >
> >
>
>

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