I'm not quite sure I understand what you are asking, but, if I do then
something like this might give a clue:

hostA% telnet hostsB port

or one might test via tools like nmap, hping, etc for the openness of the
port across the firewall.


This auusmes I read you correctly...

thanks,

Ron DuFresne

On Fri, 10 May 2002, maheshib wrote:

> Hi ,
> I have a unix machine( say host A  )  which sits behind a
> firewall ;gets the IP translated ,connects to a router and then can
> see another host (say host B )   .
> Host A can telnet, ping  , ftp  to Host B . I am running an
> appication on host a which needs to connect to Host B on a particular
> port .How can i quickly verify that port is opened .What i need to
> check on the firewall to make sure it is not a firewall or router
> issue .
> Thanks to all .
> Mibsun
>
>
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