I need some help with RealVNC connections over the internet through a
router.
INSTALLATIONS:
Here is a summary of the RealVNC installations...
ISP: Comcast, Ewing, NJ
Router: Netgear WGR614v6, no firmware upgrades
Computers: Several Dells and a Compaq DeskPro, 200MHz to 863MHz
OS's: Windows XP Pro SP2 and SP3, Win98, Redhat Linux v6.2
RealVNC Versions: v4.0 and v4.1.3, Free Personal
All of the computers that were tested are hooked-up via wire. There are
no wireless complications.
SETUP:
I used the router's "LAN IP Setup" option to permanently assign a unique
internal IP for each computer's unique MAC address (e.g. MAC address
03:02:E3:22:53:D4 will always have an IP address of 192.168.1.2).
I used the router's "Port Forwarding" option to direct traffic to the
correct internal IP address for each computer (e.g. Port 5902 goes to
internal IP address 192.168.1.2).
SYPTOMS:
The following is true (and the same) for most combinations of the
Computers, OS's, and RealVNC Versions mentioned above. For the purpose
of testing, I've disabled all firewall activity (i.e. Windows Firewall
and ZoneAlarm)...
1. I can use RealVNC Viewer successfully when specifying internal LAN
addresses such as: 192.168.1.2:5902 and 192.168.1.7:5907. Additionally,
"wireless" RealVNC Viewer connections also work when using internal LAN
addresses.
2. RealVNC Viewer fails to connect when I try to use my Comcast internet
address (e.g. 76.99.228.120 or 76.99.228.120:2 or 76.99.228.120:5902 or
76.99.228.120:7 or 76.99.228.120:5907). The reported RealVNC Viewer
error is: "unable to connect to host: Connection timed out (10060)".
3. There may be a router or ISP issue because everything used to work
fine (a year and/or two ago), but I swapped-out the router from an old
LinkSys router to the newer Netgear router. In the past, I used to be
able to use the RealVNC Viewer with Comcast internet addresses, with no
problem, using IP addresses such as: 76.99.228.120:2 and
76.99.228.120:7. I don't have the time-resolution to determine if the
problem lies with the router-swap or with Comcast changing some
protocol. I've tested the system using several of my friend's computers
in other towns. And again, using other systems, it used to work before,
but it doesn't work now.
Does anyone have any ideas?
Thanks,
jcm
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