Hi,
We are facing problem when an application is talking with the client
machine through a firewall. I do not have much of the networking
knowledge.But,I thought this forum will help me with some suggestions
o that I can put them in front of my people.
Problem Description :
We have a GUI application that we want to run from a remote client
through firewalls. There are basically two seperate networks of two
different companies (Let say company 'A' and Company 'B')and there are
two firewalls. The client machine (NT PC) is in company 'A' network
and the server machine(Sun solaris) is in company 'B' network.
The host/server that is located 'inside' a firewall has a private
IP-number (and is accessed by many IP-'clients' inside the private
net, so changing the number to a registered number is definitely not
preferred). So, we installed an 'IP number-translator' on the firewall
of company 'B' that translates a virtual, registered IP-address to the
real, unregistered IP-address. And the client will log on to this virtual
IP address through firewall.
But, the problem is the application running on the server need to have
few more port connections established between client and server. So,
the application/server is sending back a request to the client for this.
And while doing so, the application is supplying the real, unregistered
IP-address on to which the client need to establish connection. Client is
opening few ports and trying to establish connection with the real IP
address and failing. We found the TCP/IP packets leaving the company 'A'
firewall, but not reaching company 'B' firewall.
I guess that the client is sending communication packets with the
destination IP address as the real, unregistered IP-address. Can you
suggest us some solution for this? Can we change the destination IP address
in the outgoing TCP packet at the client(at company 'A' firewall) to
the desired virtual, registered IP-address ?
Your help will be very much appreciated. You can suggest us where we can
get solution for this. Let me know if you need some more details.
best regards,
Radha
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