Do network programs work well?

["Alireza Ghasemi" <ali dot foolad at gmail dot com>]

Hello All,
I have compiled some network programs and libraries with cygwin.But it seems
that they don't work properly.for example Prozilla never begins downloading
and
always says it can't resolve host(while host is available for other
programs).
or libspopc test programs say "Operation not permitted".libyahoo2's exe test
file says stackdump.whois says "No whois server is known for this kind of
object.".Although some little and sample programs work well with
localhost.Are these abnormal?Is the culprit my firewall?(I use Sygate
Personal firewall).Do I need any package to download?
Thanks
Alireza


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