I have customers from all over the world logging to my system via FTP and
transfer files back and forth.  There is this one specific customer, who  used
to logon and do FTP.  However since we changed our DSL (supposedly  upgraded to
a faster one - which of course changed our IP address) they get  timeout when
they try to FTP to our site.

Around at that time they installed a firewall at their site, but they swear
that they are not blocking our site.  And here is the strange part:

I can go to their site and ping any one of my customers and  actually be able
to use FTP to go to those customers.   I can ping our  site from their
machine without any problem as well, but the minute I go to ftp  and try to open our
site... it sits there for 3-5 minutes and than comes back  with timeout
message.  It seems it is only my site that their HP is having  problem to connect
to.  Can the problem be at my site?

Any help, comments or directions will be appreciated.

Thank you in advance
Greg Terterian

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