Solved

Only one-way ping on LAN

Posted on 2014-09-08
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Last Modified: 2014-09-08
Two machines:
Machine A: Windows 7-64
Machine B: Vista-32

Both are connected to a Comcast wifi/wired/modem via CAT5; B via a switch.

Trying to make Real VNC work, but they won't connect.  I find that A can ping B, but B cannot ping A.  When I look at Network on A and select to show the entire network, B is shown.
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Question by:Mike Caldwell
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Steve Whitcher earned 500 total points
ID: 40309975
It sounds like you probably have a software firewall enabled on "A".  Check the Windows Firewall, or any 3rd party firewall/antivirus software that is installed.  Disable the firewall temporarily, then try your Ping and RealVNC connections again.  

If they work with the firewall disabled, you can then re-enable the firewall and set exceptions for the specific applications/ports required.
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by:Mike Caldwell
ID: 40309995
Turned off Norton firewall and now can ping both ways.  VNC still not connecting, but I am working with VNC tech support, so think it best to stay with them for now.  Thanks for the super fast response.
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