- How to tell if a port has been blocked?
- Posted by Jon on January 31st, 2008
Hi,
I'm trying to diagnose a problem with remote desktop. I suspect my
internet connection.
How can I tell if a particular port has been blocked or not?
--
Regards
Jon
- Posted by tony h on January 31st, 2008
Jon wrote:
http://www.grc.com/x/ne.dll?rh1dkyd2
just test the ports you're concerned about
- Posted by Mark McIntyre on January 31st, 2008
Jon wrote:
Unfortunately you can't, for sure. If the port is blocked you may get
connection refused when telnetting to it, or you may get a timeout. Both
symptoms could equally well be your internet connection timing out, or
the other guy's cabling being dodgy, or your own firewall t*tting you
about.
--
Mark McIntyre
CLC FAQ <http://c-faq.com/>
CLC readme: <http://www.ungerhu.com/jxh/clc.welcome.txt>
- Posted by Herman on January 31st, 2008
"Jon" <spam@jonparker.plus.com> wrote in message
news:MPG.220c485c8c6cae609896ce@nntp.aioe.org...
Surely you need to set up port forwarding, although I am not sure which. I
remember trying to get it working, but I had to DMZ the host computer before
it would work. Client side should work OK with NAT though, IIRC.
