We have installed a Checkpoint firewall at a client site. Now the client has an
exchange server (e.g. 192.168.4.4) at its internal network. There is a static NAT rule
to map it to an external address (e.g. 202.109.107.96). Now the client wants to have
its internal workstation (e.g. 192.168.5.100) to access the exchange server using its
external address (202.109.107.96). When we ping the external address from the internal
workstation, the first ping packet was returned without problem. However, there is no
more ping packet returned after the first success ping packet. We have replicate the
problem in our testing environment as well.
Can someone help us to explain this behaviour of Checkpoint firewall?
Thanks!
Roland
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