Can access home PC via VNC from anywhere except work!

[Paul Moore]

Hello,

I have enabled port-forwarding on my router/LAN to allow me to access one of
my home PCs from outside. I use the browser access option by accessing my
router's WAN IP address at port 5800. This works fine from friends' PCs and
from internet cafes, but not from work.

At work, I tried both IE6 and FireFox, and both failed. Is it possible that
the company's firewall is able to block web access to specific ports? If so,
is there anyway to overcome this? I thought about using a HTTP tunnel, but
the only one I found is at www.http-tunnel.com, and this doesn't support
VNC.

Can anyone help?

Many thanks,
Paul

 

[Peter]

I have enabled port-forwarding on my router/LAN to allow me to access one
of

my home PCs from outside. I use the browser access option by accessing my
router's WAN IP address at port 5800. This works fine from friends' PCs and
from internet cafes, but not from work.

At work, I tried both IE6 and FireFox, and both failed. Is it possible that
the company's firewall is able to block web access to specific ports? If so,
is there anyway to overcome this? I thought about using a HTTP tunnel, but
the only one I found is at www.http-tunnel.com, and this doesn't support
VNC.

You can change VNC port from 5800 to 80 and try again.
Or find our which ports your work firewall does not block and pick one of
those.

 

[Paul Moore]

Sorry about the duplicate message post.

I forgot to add, that by "not working", I mean that I either get timeout (on
FireFox), or server unavailable (IE6) messages.

Paul

 

[Sooner Al [MVP]]

Yes, they can block outgoing ports at their firewall. I suggest posting this
to one of the VNC forums like this one from the UltraVNC site since this is
a bit outside the scope of this news group.

http://forum.ultravnc.net/index.php?sid=4207cccff0c62920cc2fb128d6417284

Good luck...

--

Al Jarvi (MS-MVP Windows Networking)

Please post *ALL* questions and replies to the news group for the mutual
benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...

 

[Paul Moore]

Thanks for the quick reply, Peter.

I thought that port 80 is reserved for HTTP, but then I realised that I can
do this if I don't run a web server on my local machine.

Do I redirect port 80 on my firewall to 5800 on the local machine? What do I
do with VNC port 5900 on the local machine?

Paul

 

[Peter]

I thought that port 80 is reserved for HTTP, but then I realised that I
can

do this if I don't run a web server on my local machine.

Do I redirect port 80 on my firewall to 5800 on the local machine?

You might try that. Or forward port 80 to port 80 on local machine and
reconfigure VNC to use 80 instead of 5800.

What do I
do with VNC port 5900 on the local machine?

The same as you did before.

 

[Paul Moore]

So I don't have to handle port 5900 on the router? Does the java viewer on
my work machine use port 5900 once it has been served up by the home PC? If
so, won't that also be blocked by my company's firewall?

Thanks again,
Paul

 

[Guest]

hi there u need help